The fact remains that Linux on an IBM mainframe does things...than [sic] makes Sun envious.
Please elaborate. I don't see any special features of new IBM servers that makes them really stand apart from the new Sun servers.
The poster said mainframes, not servers. (Although IBM is calling their mainframe an "enterprise server"). Check out this page for clues on what kinds of things you can do with Linux on a mainframe. I'm going to the "Installing Linux on zSeries" class in early December, so I'll know more after that time:)
For starters, you can run up to 40,000 independent virtual Linux servers in a single 48U rack nowadays. The S/390 virtualizes itself in hardware, so all the virtual machines think they're the only ones running on the chip. A year-old analysis put the crossover point of virtual Linux hosts costing less than an equivalent number of Sun servers at about 650. That gives you about 39,350 "free" additional servers at no hardware cost. Creating a new virtual machine takes approximately 90 seconds.
If you've ever been in a Qwest hosting center's server room, then you can fathom the scale of consolidating 40,000 servers into one 48U rack. From what I've heard, companies that go after this typically run up to 10,000 virtual servers.
I'll bet the designers of Freenet never thought the US would be one of the biggest content contributors due to sites being eradicated from the net. I long for the day when FP's are Freesite mirrors of the eradicated content.
a) CAJUN - Linux-based car (or rack stereo) MP3 player. Includes plans for powering remote LCD panel from serial port. Replace a 5.25" bay cover on a 1U case with an LCD panel, and put 802.11 in the PCI slot, and it's great in a stereo system. Some people do IR input with LIRC for album/song/genre selection and start/stop. Someone gave me a RaQ4 which is a great case, but no PCI slot for sound or PC Card slot for the 802.11.
b) get another StarTAC to share my minutes with as a rolling dial-up for things like checking movie times or raising/lowering the thermastat, setting the vcr, and feeding the cat via Misterhouse:)
c) I'd use a 12v power supply in the car, but be sure to power it through a special adapter that powers up the computer after 8 seconds (to avoid that weird power fluctuation between first turning the key and starting the car) and sends a "ups shutting down" signal but continues to power the PC for 30 seconds after the car is powered off.
d) can't forget the 802.11. I've also considered putting a crossover RJ45 on or near the dash for my laptop, but with the 802.11, I can do some "war driving" every time I get in the car not to mention the typical remote updating.
Control a laser/mirror arrangement which could draw or print phrases on your rear window
I'd just cheap out and hang one of the red scrolling letter signs from Radio Shack across the rear window. If you build a CAJUN system, you would already have an LCD up front with six pushbuttons surrounding the screen (like an ATM). Just add a "signage" function, and select phrases to scroll across the sign!
slide in "Hey Asshole..." from the right, pause 2 seconds.. blink "BACK OFF!!" in bold for 2 seconds..
And don't forget the classic, "keep honking.. I'm reloading." You could have all your favorite bumper stickers at once. And people say you can't have the "Marquee" screen saver on your car!
you're forgetting about the + and - 12v lines and all the + and - 5v lines. nothing a visit to mouser.com can't solve, but don't go hooking up ALL those lines to 12v negative ground..
I browse with Junkbuster because I've decided that I can do without Slashdot. I like it, but I don't NEED it. It's been fun over the years, but it has degraded. Like the day AO-13 was launched into orbit, the controllers calculated exactly which *day* it would re-enter the earth's atmosphere. And they were right.
With places like Yahoo! and MSNBC saying "post comments on this article", I think we will all just disperse and find similar functionality elsewhere. The name escapes me right now, but there's a site that specializes in providing free headlines by XML. All you get are clickable URL's to content on other sites. Put the headlines on our own sites, and we'll all get referrer credit with Yahoo.
but I pay enough for bandwidth that I'm afraid one slashdotting would wipe me out. Any ideas?
You can insert the video into Freenet, and it will remain available so long as even minimal interest remains. In addition, Freenet will automatically replicate it to multiple servers around the world to meet local demand. It's like a demand-driven free Akamai. (Okay, that may be a stretch:)
I really think Freenet is a great idea, and I also think it would be a great idea if non-commercial pages could be inserted into Freenet shortly before being Slashdotted. Then the Freenet architects would have a lot more performance data to study so long as many Slashdotters would view the Freenet version. And the way things are going in the US Congress these days, we may need the protections Freenet has always offered readers in more oppressive nations. Hell I would think, legal issues notwithstanding, it would be easy for someone to start replying to mirror requests with a Freesite. A simple wget and URL cleansing would produce an easily-insertable site.
My wife taught me a great phrase: "you don't ask, you don't get". While employed in a server environment, we were updating all the Cybex switches to the latest and greatest model. I asked if I could take one of the old ones home, the boss said "sure." I draped sixteen 10-foot cable sets over my shoulders and carried the two control boxes right on the train that very night. You just have to ignore the funny stares:)
When the company was throwing out some old Digital DECTalk hardware, they offered it to me "only if [you] can take it home tonight." I replied, "it's a good thing I drove!" I got a 5 foot rack with four 8-channel DECtalkers designed to convert serial text into speech audio out over phone lines and return DTMF keypresses back to the server over the same serial lines. I gave away 3 of the 4 talkers, kept the 5 foot rack and two serial sprayers. I thought it would be perfect for 8 channels of hardware text-to-speech in my home automation setup. (Its the same hardware used at NOAA weather radio.) Too bad the terminal server talks LAT. Linux will support it soon enough, if it doesn't already.
A friend recently went through a big cleaning in his server environment and made off with two active KVM switches. His are better because my passive ones don't support higher than 60Hz refresh. Mine are just fine for Linux consoles and VERY light duty X work.
Finally, during a really big spring cleaning, I brought home a Digiboard PC/8. I just need a reason to buy the 8-way octopus cable for it.
So for the cost of the Digi octopus cable, I can console-switch among 24 machines on 2 consoles, and hit 24 to 72 serial ports if you count those on the console-switched servers. Oh, I also have two 96GB 12-tape changers, a 48GB 6-tape HP changer, and a 40GB Exabyte Mammoth, but that's for a different "Ask Slashdot".
I have to say, there are times where I absolutely have needed KVM access to the Linux servers. I haven't setup any serial stuff yet, and my Amanda tape backup sometimes freaks out. I put SSHD as a respawn in inittab, but when a rogue app has exhausted all your memory and swap, direct console access via KVM (or I'm sure serial, too) is all you have. VNC wont do crap for you. And for hardcore firewall tweakers, we can all tell you we've locked ourselves completely out of the firewall at one time or another. I recently locked myself out of a remote box because when I upgraded SSH, I forgot to reset it to the non-standard port I listen on before I HUPped it. I loosened the firewall to listen on 22 just in case I pull that one again!
If you don't get the joke, maybe in future, I'll tag them all up for you to make it easier.
Oh, I'm sorry. I thought your reference to "Luddite" had you being humble, particularly with one of the highest UIDs on the system. Guess I was wrong, new guy.
There are server people, and there are content people. I'm a server person. I could give a shit about what new things MS has decided to break in any of its garbageware. I have much bigger fish to fry during my days.
Besides, the "flash" of the web has become pointless now that B2C has fizzled and B2B is still exploding. The point being, MS is missing the movement.. again. Its about moving data from point to point as quickly and reliably as possible. Anyone still trying to make it look nicer to end users is living in 1998. Sherlock.
I've said it before during other AOL browser discussions..
I'd like to see AOL make their own Linux-based kiosk-like distro. Now that Ximian Red Carpet is maturing, adding an AOL channel would be pretty darn easy.
I would absolutely rebuild my Mom's old PC as an AOL kiosk for her. I know a real estate agent who uses Compuserve does all his MLS work on the web, and calls me whenever he gets the virus du jour. Definitely needs an AOL kiosk.
PS I appreciate the irony that I'm posting using IE 6, but I'm at work and I'm testing whether it offers anything over our standard IE 5.01. It doesn't -/. looks the same to me.
Slashdot is probably the single worst place to browse looking for IE compatibility issues. Second only to Netscape.com I'm sure. I seriously doubt they utilize any of the IE quirks, thereby breaking all of the other browsers that aren't broken in the same way.
I don't believe that speed is possible over cable.
I heard General Instrument in nearby Bensalem, PA was developing 27Mbit cablemodems a couple years ago, with a small test deployment. Never saw anything come of it, of course. Perhaps Comcast's digital cable was the result.
And yes, a friend has Optimum Online in Trenton, NJ *cough* and it is smokin'. His "cable neighbors" consist of a highway and a cemetary, so he can never move, either!
Good point. My shell account provider uses something like MAPS to put an "X-Spam-Warning" in headers when email comes from a known open relay, but allows the mail to go through.
Could someone reply with the procmail recipe to drop those emails? I've been checking for some time, and I haven't been getting good emails from blacklisted hosts.
Nope, they can't. That's what tcp has sequence numbers for. All they could do is a SYN flood, which wouldn't be very effective.
WRT TCP Seq No's, isn't it true that the initiating host sets the TCP sequence numbers and all the ACK packets in the conversation (coming from the victim host) will always have the last SEQ# plus 1? Therefore the initiating host doesn't necessarily need to receive the ACK packets from the victim host to walk the victim thru a conversation, so long as it uses randomly increasing SEQ#'s. Granted the initiating host isn't supposed to send the next packet until it has received the ACK for the last one, but who's to say you can't just keep forcefeeding new packets assuming the victim host has had enough time to send an ACK for the previous packet?
I'm willing to be wrong, but besides the receipt of the ACK packet itself, I don't think the initiating host really needs anything from each ACK packet to continue with the conversation. Spoof the source IP, randomly increase each outgoing SEQ#, and give enough time to the victim to send an ACK packet, and it seems you could blindly hold up a conversation using a spoofed source IP.
As I considered later on, you could also use the LaBrea mechanism to spoof the source IP as an unused one from the same subnet as the attacker and hold a strawman session with the source IP literally being non-existant.
Unfortunately, I never made it to a Surfer show. I was born in '70, and really started getting into this stuff when I was 13. Then, as I learned about more bands like Joy Division, New Order, Big Black and Wedding Present, it was always in the context of "That was so-and-so. Too bad broke up last year." I had to resort to seeing things like the Pixies/Love and Rockets/Cure triple-bill and the Peter Murphy Deep tour. I was lucky enough to catch the PIL/Sugarcubes/New Order (Technique) triple-bill in '89, and for the perfect birthday present, my wife and I saw Bauhaus in Philly in 98.
I'm not really pissed off about Touch 'n Go, the guy absolutely does deserve to make money. I was just throwing it out there that indie labels aren't necessarily angels. I closed with Albini's diatribe since it very clearly outlines how badly the recording industry assrapes listed artists. I don't think I could ever be pissed off at Touch 'n Go:)
slow connections will be more inclined to spend money on broadband connections
I live 19,000 feet from my phone company CO. No DSL.
My cable system was wired in the 1950's and has had 3 owners in 4 years. No investment in the infrastructure. (It is coming, tho.. just not here yet)
I live in a condo and refuse to drop cable for satellite (@ $300 x5 tv's and for POTS up "broadband"), particularly when my home LAN is on the second floor.
I don't refuse to spend a little more money on broadband. My employer even reimburses me for ISP access! There are no reasonable options available to me, and I live halfway between NYC and Philly.. not exactly in the sticks.
Re:Not a normal DOS attack, also easily defeatable
on
RIAA to DoS Pirates?
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· Score: 2
How long until the various file sharing software products implement blacklists? All you'd need is for somebody to set up a database of IP addresses to block
As stated before, source IPs can be spoofed, hence blacklists won't work. If you think the DoS'ing host has to be on the same segment as the victim, I believe that the way TCP works would allow the DoS'er to send multiple spoofed packets, simulating a conversation without actually seeing the ACK packets coming from the victim. The DoS'ing host won't need anything from the ACK packets, since the source sets the TCP sequence number.
Of course if they actually do plan on downloading the file they will need to be on the same segment if they plan on spoofing the source IP. Hmm... maybe they'll have DoS hosts on a few IPs of a class C and spoof the source IPs from dead IPs on the same source network. The victims may never know the DoS'ing hosts.
Unfortunately for them, they are relying on TCP, so they need to disclose their source addresses for the attack to work. And if they do that, we traders can make a database listing all of their IP addresses (kind of like MAPS/ORBS) and block their asses. We will find ways to thwart this approach and we will continue trading.
They can easily spoof the source IP address in their attacks. Even worse, they may spoof the source address as coming from yet another swapper, and the system would collapse upon itself as swappers start blacklisting each other.
Note to those who will say that I'm a dirty rotten no good pirate: I don't pirate music. I simply buy from indie labels. At least then, I'm sure that the artist gets most of my money.
I grew up on college radio (Rutgers and Princeton). Here is an article about my one of my favorite labels, Touch 'n Go Records. Current or past home of Steve Albini (Big Black, Rapeman, Jesus Lizard, Shellac), Butthole Surfers, Wedding Present and more. Apparently the Butthole Surfers tried to take over the distribution rights to their old albums (mmmm... Locust Abortion Technician) and the Touch n Go said "no way, I own the distro rights forever. that's how I make money." Made me think twice even about indie labels.
For a diatribe by "the greatest songwriter of all time"(tm) Steve Albini, visit Negativland's website.
In classic Big Black style, the liner notes for the Rapeman album "Two Nuns and a Pack Mule" contained descriptions of the songs instead of the lyrics. For "Steak and Black Onions", he wrote "We don't hate vegetarians. We just think they're funny."
There still need to be landlines for those cell phones to use, if memory serves me right.
Not sure where, but I recall an article on how a cell company expanded their coverage area by using Linux and out-of-band microwave links. It's easy to aggregrate many cellphone calls into even a 1 megabit stream over microwave.
So, at some point, yes cellphones absolutely need landline (of course), but it's not necessarily at each tower, so long as you have line-of-sight from tower to tower.
After installing Junkbuster on my firewall, I also started keeping track of callers. I would tell them to take me off the caller list, not knowing that the phrase "Do Not Call List" was important back then. I would also tell them that I'm keeping records of the call and make them spell out the name of the company and their phone number. Before they could get into their pitch, I would oh-so-nicely say, "okay, thanks." and hang up on them.
My best success came with Omaha Steaks. They called one night at dinner. I told them not to call me anymore, and told them that I was writing down that they called. They called a week later:
TM: Hello sir, this is Omaha Steaks.
me: Oh, cool!
TM: Wow, I've never heard that before.
me: I told you guys not to ever call me again just ONE WEEK AGO! Now I can collect $500 under federal law! I'm saving up for a big tv.
TM: um, uhh, um, we don't have any record of that.
me: Obviously not, because you called me again.
TM: So sorry sir, it'll never happen again.
Never heard from them again. Also, the *only* purchase my wife made off of QVC that was worth anything was a phone with built-in caller ID filtering. It beeps in between the 2nd and all additional rings if the caller is in the "priority" or "normal" list.
Sometimes I've been known to say, "oh shit I thought you were someone important/click/" or "I can't believe I woke up to talk to you/click/" Also when a long distance company calls, I either say "I [send email|do video conferencing] instead of calling long distance." or "I'm required to keep my LD carrier for my work." And my favorite is with cellular companies:
me: "Hey! Sounds great! In fact, I'll transfer BOTH of my cellphones! All you need to do is pick up my early termination fees."
Boy, +1 if I had it... EXCELLENT point. I never thought about that.. back to recording my outgoing message on my laptop and prepending the sit tone before playing it into the machine.
And I want to stress this to others. The telezapper does not play all three tones, just the first one, so it shouldn't confuse your human callers.
Most answering machines have what's called a "toll saver" mode. I know you said voicemail, but I can't speak to that. In toll saver mode, it will let the incoming calls ring 4 times unless a new message is waiting, at which time it will answer on the first ring. That feature is usually switchable, allowing for 2 ring answer all the time.
hat's what I do right now too. What I would really like is a voice mail system at home that a can route calls to different mailboxes depending on the callerID. Anything that shows up as "Unknown" or "Blocked" gets the three toned message. I have searched, but I am yet to find one...
Slashdot Mirror
The fact remains that Linux on an IBM mainframe does things...than [sic] makes Sun envious.
:)
Please elaborate. I don't see any special features of new IBM servers that makes them really stand apart from the new Sun servers.
The poster said mainframes, not servers. (Although IBM is calling their mainframe an "enterprise server"). Check out this page for clues on what kinds of things you can do with Linux on a mainframe. I'm going to the "Installing Linux on zSeries" class in early December, so I'll know more after that time
For starters, you can run up to 40,000 independent virtual Linux servers in a single 48U rack nowadays. The S/390 virtualizes itself in hardware, so all the virtual machines think they're the only ones running on the chip. A year-old analysis put the crossover point of virtual Linux hosts costing less than an equivalent number of Sun servers at about 650. That gives you about 39,350 "free" additional servers at no hardware cost. Creating a new virtual machine takes approximately 90 seconds.
If you've ever been in a Qwest hosting center's server room, then you can fathom the scale of consolidating 40,000 servers into one 48U rack. From what I've heard, companies that go after this typically run up to 10,000 virtual servers.
Freenet.
I'll bet the designers of Freenet never thought the US would be one of the biggest content contributors due to sites being eradicated from the net. I long for the day when FP's are Freesite mirrors of the eradicated content.
check out Altivore.
I wonder how many tech-saavy parents would use it to monitor their kid's activities.
a) CAJUN - Linux-based car (or rack stereo) MP3 player. Includes plans for powering remote LCD panel from serial port. Replace a 5.25" bay cover on a 1U case with an LCD panel, and put 802.11 in the PCI slot, and it's great in a stereo system. Some people do IR input with LIRC for album/song/genre selection and start/stop. Someone gave me a RaQ4 which is a great case, but no PCI slot for sound or PC Card slot for the 802.11.
:)
b) get another StarTAC to share my minutes with as a rolling dial-up for things like checking movie times or raising/lowering the thermastat, setting the vcr, and feeding the cat via Misterhouse
c) I'd use a 12v power supply in the car, but be sure to power it through a special adapter that powers up the computer after 8 seconds (to avoid that weird power fluctuation between first turning the key and starting the car) and sends a "ups shutting down" signal but continues to power the PC for 30 seconds after the car is powered off.
d) can't forget the 802.11. I've also considered putting a crossover RJ45 on or near the dash for my laptop, but with the 802.11, I can do some "war driving" every time I get in the car not to mention the typical remote updating.
Control a laser/mirror arrangement which could draw or print phrases on your rear window
I'd just cheap out and hang one of the red scrolling letter signs from Radio Shack across the rear window. If you build a CAJUN system, you would already have an LCD up front with six pushbuttons surrounding the screen (like an ATM). Just add a "signage" function, and select phrases to scroll across the sign!
slide in "Hey Asshole..." from the right, pause 2 seconds.. blink "BACK OFF!!" in bold for 2 seconds..
And don't forget the classic, "keep honking.. I'm reloading." You could have all your favorite bumper stickers at once. And people say you can't have the "Marquee" screen saver on your car!
you're forgetting about the + and - 12v lines and all the + and - 5v lines. nothing a visit to mouser.com can't solve, but don't go hooking up ALL those lines to 12v negative ground..
I browse with Junkbuster because I've decided that I can do without Slashdot. I like it, but I don't NEED it. It's been fun over the years, but it has degraded. Like the day AO-13 was launched into orbit, the controllers calculated exactly which *day* it would re-enter the earth's atmosphere. And they were right.
With places like Yahoo! and MSNBC saying "post comments on this article", I think we will all just disperse and find similar functionality elsewhere. The name escapes me right now, but there's a site that specializes in providing free headlines by XML. All you get are clickable URL's to content on other sites. Put the headlines on our own sites, and we'll all get referrer credit with Yahoo.
but I pay enough for bandwidth that I'm afraid one slashdotting would wipe me out. Any ideas?
:)
You can insert the video into Freenet, and it will remain available so long as even minimal interest remains. In addition, Freenet will automatically replicate it to multiple servers around the world to meet local demand. It's like a demand-driven free Akamai. (Okay, that may be a stretch
I really think Freenet is a great idea, and I also think it would be a great idea if non-commercial pages could be inserted into Freenet shortly before being Slashdotted. Then the Freenet architects would have a lot more performance data to study so long as many Slashdotters would view the Freenet version. And the way things are going in the US Congress these days, we may need the protections Freenet has always offered readers in more oppressive nations. Hell I would think, legal issues notwithstanding, it would be easy for someone to start replying to mirror requests with a Freesite. A simple wget and URL cleansing would produce an easily-insertable site.
My wife taught me a great phrase: "you don't ask, you don't get". While employed in a server environment, we were updating all the Cybex switches to the latest and greatest model. I asked if I could take one of the old ones home, the boss said "sure." I draped sixteen 10-foot cable sets over my shoulders and carried the two control boxes right on the train that very night. You just have to ignore the funny stares :)
When the company was throwing out some old Digital DECTalk hardware, they offered it to me "only if [you] can take it home tonight." I replied, "it's a good thing I drove!" I got a 5 foot rack with four 8-channel DECtalkers designed to convert serial text into speech audio out over phone lines and return DTMF keypresses back to the server over the same serial lines. I gave away 3 of the 4 talkers, kept the 5 foot rack and two serial sprayers. I thought it would be perfect for 8 channels of hardware text-to-speech in my home automation setup. (Its the same hardware used at NOAA weather radio.) Too bad the terminal server talks LAT. Linux will support it soon enough, if it doesn't already.
A friend recently went through a big cleaning in his server environment and made off with two active KVM switches. His are better because my passive ones don't support higher than 60Hz refresh. Mine are just fine for Linux consoles and VERY light duty X work.
Finally, during a really big spring cleaning, I brought home a Digiboard PC/8. I just need a reason to buy the 8-way octopus cable for it.
So for the cost of the Digi octopus cable, I can console-switch among 24 machines on 2 consoles, and hit 24 to 72 serial ports if you count those on the console-switched servers. Oh, I also have two 96GB 12-tape changers, a 48GB 6-tape HP changer, and a 40GB Exabyte Mammoth, but that's for a different "Ask Slashdot".
I have to say, there are times where I absolutely have needed KVM access to the Linux servers. I haven't setup any serial stuff yet, and my Amanda tape backup sometimes freaks out. I put SSHD as a respawn in inittab, but when a rogue app has exhausted all your memory and swap, direct console access via KVM (or I'm sure serial, too) is all you have. VNC wont do crap for you. And for hardcore firewall tweakers, we can all tell you we've locked ourselves completely out of the firewall at one time or another. I recently locked myself out of a remote box because when I upgraded SSH, I forgot to reset it to the non-standard port I listen on before I HUPped it. I loosened the firewall to listen on 22 just in case I pull that one again!
If you don't get the joke, maybe in future, I'll tag them all up for you to make it easier.
Oh, I'm sorry. I thought your reference to "Luddite" had you being humble, particularly with one of the highest UIDs on the system. Guess I was wrong, new guy.
There are server people, and there are content people. I'm a server person. I could give a shit about what new things MS has decided to break in any of its garbageware. I have much bigger fish to fry during my days.
Besides, the "flash" of the web has become pointless now that B2C has fizzled and B2B is still exploding. The point being, MS is missing the movement.. again. Its about moving data from point to point as quickly and reliably as possible. Anyone still trying to make it look nicer to end users is living in 1998. Sherlock.
I've said it before during other AOL browser discussions..
I'd like to see AOL make their own Linux-based kiosk-like distro. Now that Ximian Red Carpet is maturing, adding an AOL channel would be pretty darn easy.
I would absolutely rebuild my Mom's old PC as an AOL kiosk for her. I know a real estate agent who uses Compuserve does all his MLS work on the web, and calls me whenever he gets the virus du jour. Definitely needs an AOL kiosk.
PS I appreciate the irony that I'm posting using IE 6, but I'm at work and I'm testing whether it offers anything over our standard IE 5.01. It doesn't - /. looks the same to me.
Slashdot is probably the single worst place to browse looking for IE compatibility issues. Second only to Netscape.com I'm sure. I seriously doubt they utilize any of the IE quirks, thereby breaking all of the other browsers that aren't broken in the same way.
I don't believe that speed is possible over cable.
I heard General Instrument in nearby Bensalem, PA was developing 27Mbit cablemodems a couple years ago, with a small test deployment. Never saw anything come of it, of course. Perhaps Comcast's digital cable was the result.
And yes, a friend has Optimum Online in Trenton, NJ *cough* and it is smokin'. His "cable neighbors" consist of a highway and a cemetary, so he can never move, either!
Good point. My shell account provider uses something like MAPS to put an "X-Spam-Warning" in headers when email comes from a known open relay, but allows the mail to go through.
Could someone reply with the procmail recipe to drop those emails? I've been checking for some time, and I haven't been getting good emails from blacklisted hosts.
Thanks!
Nope, they can't. That's what tcp has sequence numbers for. All they could do is a SYN flood, which wouldn't be very effective.
WRT TCP Seq No's, isn't it true that the initiating host sets the TCP sequence numbers and all the ACK packets in the conversation (coming from the victim host) will always have the last SEQ# plus 1? Therefore the initiating host doesn't necessarily need to receive the ACK packets from the victim host to walk the victim thru a conversation, so long as it uses randomly increasing SEQ#'s. Granted the initiating host isn't supposed to send the next packet until it has received the ACK for the last one, but who's to say you can't just keep forcefeeding new packets assuming the victim host has had enough time to send an ACK for the previous packet?
I'm willing to be wrong, but besides the receipt of the ACK packet itself, I don't think the initiating host really needs anything from each ACK packet to continue with the conversation. Spoof the source IP, randomly increase each outgoing SEQ#, and give enough time to the victim to send an ACK packet, and it seems you could blindly hold up a conversation using a spoofed source IP.
As I considered later on, you could also use the LaBrea mechanism to spoof the source IP as an unused one from the same subnet as the attacker and hold a strawman session with the source IP literally being non-existant.
Unfortunately, I never made it to a Surfer show. I was born in '70, and really started getting into this stuff when I was 13. Then, as I learned about more bands like Joy Division, New Order, Big Black and Wedding Present, it was always in the context of "That was so-and-so. Too bad broke up last year." I had to resort to seeing things like the Pixies/Love and Rockets/Cure triple-bill and the Peter Murphy Deep tour. I was lucky enough to catch the PIL/Sugarcubes/New Order (Technique) triple-bill in '89, and for the perfect birthday present, my wife and I saw Bauhaus in Philly in 98.
:)
I'm not really pissed off about Touch 'n Go, the guy absolutely does deserve to make money. I was just throwing it out there that indie labels aren't necessarily angels. I closed with Albini's diatribe since it very clearly outlines how badly the recording industry assrapes listed artists. I don't think I could ever be pissed off at Touch 'n Go
slow connections will be more inclined to spend money on broadband connections
I live 19,000 feet from my phone company CO. No DSL.
My cable system was wired in the 1950's and has had 3 owners in 4 years. No investment in the infrastructure. (It is coming, tho.. just not here yet)
I live in a condo and refuse to drop cable for satellite (@ $300 x5 tv's and for POTS up "broadband"), particularly when my home LAN is on the second floor.
I don't refuse to spend a little more money on broadband. My employer even reimburses me for ISP access! There are no reasonable options available to me, and I live halfway between NYC and Philly.. not exactly in the sticks.
How long until the various file sharing software products implement blacklists? All you'd need is for somebody to set up a database of IP addresses to block
As stated before, source IPs can be spoofed, hence blacklists won't work. If you think the DoS'ing host has to be on the same segment as the victim, I believe that the way TCP works would allow the DoS'er to send multiple spoofed packets, simulating a conversation without actually seeing the ACK packets coming from the victim. The DoS'ing host won't need anything from the ACK packets, since the source sets the TCP sequence number.
Of course if they actually do plan on downloading the file they will need to be on the same segment if they plan on spoofing the source IP. Hmm... maybe they'll have DoS hosts on a few IPs of a class C and spoof the source IPs from dead IPs on the same source network. The victims may never know the DoS'ing hosts.
Unfortunately for them, they are relying on TCP, so they need to disclose their source addresses for the attack to work. And if they do that, we traders can make a database listing all of their IP addresses (kind of like MAPS/ORBS) and block their asses. We will find ways to thwart this approach and we will continue trading.
They can easily spoof the source IP address in their attacks. Even worse, they may spoof the source address as coming from yet another swapper, and the system would collapse upon itself as swappers start blacklisting each other.
Note to those who will say that I'm a dirty rotten no good pirate: I don't pirate music. I simply buy from indie labels. At least then, I'm sure that the artist gets most of my money.
I grew up on college radio (Rutgers and Princeton). Here is an article about my one of my favorite labels, Touch 'n Go Records. Current or past home of Steve Albini (Big Black, Rapeman, Jesus Lizard, Shellac), Butthole Surfers, Wedding Present and more. Apparently the Butthole Surfers tried to take over the distribution rights to their old albums (mmmm... Locust Abortion Technician) and the Touch n Go said "no way, I own the distro rights forever. that's how I make money." Made me think twice even about indie labels.
For a diatribe by "the greatest songwriter of all time"(tm) Steve Albini, visit Negativland's website.
In classic Big Black style, the liner notes for the Rapeman album "Two Nuns and a Pack Mule" contained descriptions of the songs instead of the lyrics. For "Steak and Black Onions", he wrote "We don't hate vegetarians. We just think they're funny."
There still need to be landlines for those cell phones to use, if memory serves me right.
Not sure where, but I recall an article on how a cell company expanded their coverage area by using Linux and out-of-band microwave links. It's easy to aggregrate many cellphone calls into even a 1 megabit stream over microwave.
So, at some point, yes cellphones absolutely need landline (of course), but it's not necessarily at each tower, so long as you have line-of-sight from tower to tower.
After installing Junkbuster on my firewall, I also started keeping track of callers. I would tell them to take me off the caller list, not knowing that the phrase "Do Not Call List" was important back then. I would also tell them that I'm keeping records of the call and make them spell out the name of the company and their phone number. Before they could get into their pitch, I would oh-so-nicely say, "okay, thanks." and hang up on them.
/click/" or "I can't believe I woke up to talk to you /click/" Also when a long distance company calls, I either say "I [send email|do video conferencing] instead of calling long distance." or "I'm required to keep my LD carrier for my work." And my favorite is with cellular companies:
/click/"
My best success came with Omaha Steaks. They called one night at dinner. I told them not to call me anymore, and told them that I was writing down that they called. They called a week later:
TM: Hello sir, this is Omaha Steaks.
me: Oh, cool!
TM: Wow, I've never heard that before.
me: I told you guys not to ever call me again just ONE WEEK AGO! Now I can collect $500 under federal law! I'm saving up for a big tv.
TM: um, uhh, um, we don't have any record of that.
me: Obviously not, because you called me again.
TM: So sorry sir, it'll never happen again.
Never heard from them again. Also, the *only* purchase my wife made off of QVC that was worth anything was a phone with built-in caller ID filtering. It beeps in between the 2nd and all additional rings if the caller is in the "priority" or "normal" list.
Sometimes I've been known to say, "oh shit I thought you were someone important
me: "Hey! Sounds great! In fact, I'll transfer BOTH of my cellphones! All you need to do is pick up my early termination fees."
them: "Well, how much is it?"
me: "$175 per line"
them: "Oh, uh, I don't think we can do that."
me: "Yeah, I didn't think so.
Boy, +1 if I had it... EXCELLENT point. I never thought about that.. back to recording my outgoing message on my laptop and prepending the sit tone before playing it into the machine.
And I want to stress this to others. The telezapper does not play all three tones, just the first one, so it shouldn't confuse your human callers.
Most answering machines have what's called a "toll saver" mode. I know you said voicemail, but I can't speak to that. In toll saver mode, it will let the incoming calls ring 4 times unless a new message is waiting, at which time it will answer on the first ring. That feature is usually switchable, allowing for 2 ring answer all the time.
hat's what I do right now too. What I would really like is a voice mail system at home that a can route calls to different mailboxes depending on the callerID. Anything that shows up as "Unknown" or "Blocked" gets the three toned message. I have searched, but I am yet to find one...
Radium Shackles has one that will allow you to set up **ten** different outgoing messages and mailboxes specific to up to ten different incoming numbers. I threatened my mother-in-law that her number would be answered with "what now? "