postmaster@127.0.0.1 and abuse]@127.0.0.1postmaster@127.0.0.1 and abuse@127.0.0.1
Good idea but, I'm sure spam software has been rejecting 127.0.0.1 for many years.
How about a few people volunteering real FQDNs that all resolve to 127.0.0.1? I realize that people would be volunteering horsepower and bandwidth for DNS lookups, but it would be in the name of dramatically reducing spam. Then, keep a list of all the "loopback FQDN's" and let the rest of us feed those FQDN's into spam-trap generators. Eventually, there would be so many real-looking spam trap email addresses that the spam software wouldn't be able to keep up with the list of loopback FQDN's.
To take it to the next level, you could hide the list of "loopback FQDN's" by making a reverse DNS lookup against a couple of volunteered IP addresses return a random FQDN from the list of loopback FQDN's at the time that the spamtrap page is dynamically generated.
Spammers would never know the entire list of FQDN's that resolve to loopback.
I may have skimmed a little too lightly, but I didn't see anyone mention that CNN actually runs one of the best IRC servers used for interactive televsion! When Mir was returning to Earth, there were well over 800 people in the room.
Then, with Talkback Live, they make excellent use of AIM and IRC. Very forward thinking.
You know, I was thinking about that, too. But in the earlier comments discussing speedometer vs odometer. I found myself thinking that if I had a camera pointing sideways out one of my windows while I was driving, every picture would be blurry. However, if you chose a 90 degree angle and rotated the camera between 0 degrees (pointing straight out the side) and 90 degrees (pointing straight out the windshield) by 1 degree per mile per hour, I would think you would drastically reduce the number of blurry pictures.
The added benefit of course would be to have 30 chances to get the mountains that are ahead of you, instead of wasting those shots on wheat or whatever it is. Of course, if you set your cruise at 80mph, most of your pictures will have the frame of your car slicing right down the middle. Roofcam!
now if I would only follow my own advice! I run it with no WEP, and full class C on DHCP on the edge of a 1,200-unit condo development. Wireless *whore*:)
I did a walkaround of my property with the laptop, and no usable signal gets past my property line
Problem is, high gain antennas work in *both* directions.. transmit and receive. So while you may not have detected any usable signal with your laptop, I doubt you tested it with the six foot long log periodic, the 60-mile dish, or the 120-mile dish I have. Your neighbors could put pringles cans in their attic (or basement if they have a direct shot to your basement windows) and hit your network.
By using an 18" long commercial version of the pringles can (make and model escape me) on the client side, I was able to add another couple hundred yards of usable distance when hitting a Linksys AP that uses a **PC Card** as its antenna (read as "no external antennas"). WEP will only keep out the "plug and play hackers" but that's it. And even without your network settings, sniffers will get your broadcasts, like ARPs, and see what IP addresses you're using. Best protection there is to setup a subnet of 4 or 8 hosts with a standard default gateway (192.168.1.1) to throw them off so if they try to use a high IP far away from the ones you're using, they'll be out of your subnet. Can't get to the net or your boxes.
You can't ever think you have radio waves under control. They work in mysterious ways. With an 18" dish, you can pick up a ham satellite on 2.4GHz 30,000km away.
You need to know how to setup servers and handle a computer. They actually have you troubleshoot a purposefully broken computer. If you can't diagnose it, you don't pass
You have to do that **four** times. You also have to build a system from scratch which meets a list of required features and REQUIRES a kernel recompile. I watched a five-year AIX'er fail and a four year Solaris guy hack his way through. An MCSE was there "to see what Linux was all about" - um, FAIL.
Re:Sounds like a tremendous waste...
on
Linux On Big Iron
·
· Score: 2
The pci slots are all hot swap, the drives are all hot swap, the power supplies are hotswap etc. And they still cost a very small fraction of a mainframe
You're right.. I too have worked with Compaqs that have all those features. The original poster said he was running "an oldish Dell". Of course, the full-featured Compaq boxes did come close to the $18k mark, which approaches the $26k Winnebago spent on upgrading the mainframe to support their new Linux operations. Add another virtual server, and their choice was much more cost effective. Add ten more virtual servers and its no question which choice was better.
I'll run my setup script to bring another virtual server online in about 5 minutes, and you'll start over asking for another $15k for YAB.
Re:Sounds like a tremendous waste...
on
Linux On Big Iron
·
· Score: 4, Insightful
I've got an old Dell server running an oldish version of RedHat and Cyrus, serving email for about 1200 users. The machine is far from taxed right now
I think a lot of Intel-oriented people would be floored if they learned about the hardware reliability and flexibility that mainframes offer. Do you have dual power supplies in your Dell box? Can you hot swap them? Do you have hardware RAID? What about redundant hardware RAID attached to a dual-channel RAID storage box (also with dual hot-swap power supplies)? Can you hot plug your processors? RAM? RAID controllers?
A key feature of Linux is that it lets you select reliability and availability just by turning a dial. From handhelds to Intel to RISC to midrange and mainframe, you get to decide how mission critical your apps are. If you accidentally unplug your Dell box, your users are SOL until it reboots.
if you are thinking of taking the [fast track] RHCE course I really enjoyed it.
Same here, last June. And when I took my Linux on S/390 training in December, I was in class with people from a major online bill payment company, a major auto insurer, Canada's DOD, and many others. Most had already deployed it and wanted to see what they hadn't figured out for themselves yet.
In August, 2000, I sat next to an IBM'er by coincidence on a flight. He saw I was reading the "Linux for S/390" RedBook. He said I'd become a "demigod" if I get into that. I've already gone thru one consolidation project, starting a second one on Monday in NYC, and have a third one queued up, waiting for me to finish up in NY. It seems we recently gave a customer a server upgrade plan, and they replied, "what, no Linux?" So we're redoing it as a consolidation plan for Linux on S/390.
I'd say Linux on S/390 is picking up steam big time. When I spoke to a friend about this setup, he replied, "Wow, you finally sound like one of those mainframe IBM'ers we used to make fun of!" Of course, he still has no reply to the argument that I can reduce just about any single data center to a couple of 48U racks, and give all the servers five nines.
I always run ssh user@ftp.site.com since its the same as my email address on that box, or better yet, create and use an identical account on the local machine and just run ssh ftp.site.com.
Its like people running zcat somefile.tar.gz | tar xvf - when you can run tar zxvf somefile.tar.gz. Same for bzcat and what, 'j' instead of 'z'? Maybe it helps some people keep it straight in their heads that they're literally piping the output of a zcat into a tar, like peeling layers of an onion. Me.. I just like to save typing.
awesome movie. Yes, that's exactly what popped into my head upon first glance. Of course, it was my daily after school fare for a couple of years in the mid-80's. but then I got to thinking that this taking the "easy" way to achieving that goal.
as for not being able to feel the bat-like 6th sense, I can totally wrap my mind around "feeling" a wall that is six feet away from me in total darkness, if this device provides some sort of stimulus based on ultrasound. Of course, the thought of feeling pressure against my skin from something I'm not touching would probably drive me nuts after a day or so. I'd rather have implanted bluetooth paired up with a system that reacts to my thoughts first. Home automation meets Firefox!
Talk about freaking out a date when you bring her home!
I wonder when someone will put together a scaled-down linux distro that competes with AOL
If you've read the AOL/RedHat stories lately, you'll see that a number of us think AOL should put out their own distro, targetted at the older PCs families are now replacing. Something to turn them into an AOL kiosk, if you will, without all the hassles of putting out your own device a la the Gateway thing. Imagine the reduction in support costs when AOL owns the OS *and* the client? Done well, I'd give it to my grandmother. Anything to stop having to explain Application Execution Errors.
Also, AFAICT, all the AOL dialup numbers are now PPP. Or so Windows reports a new PPP adapter with more recent versions. They've already leaked a Linux client for internal use only, so you know they've got some skunkworks going on.
I always thought a mail bomb was doing something like forging a request for the control file (or something huge) from NNTP servers. You post it to a newsgroup, and all the (now considered misconfigured) servers that receive your article would mail megabytes upon megabytes to the forged email address. The victim would get 100MB of mail a day for about a week. Now THAT was a mail bomb!!:)
This is more of a "crash the server exploit", or as many have already said, "DoS attack".
I do expect that it will be reasonable human beings with an interest in communicating with me. Fradulently titled commercial email that I get 7 copies of (3 email aliases and 4 mailing lists that I'm on) don't count
That's like yelling "no fair!" at a playground. You have to get over the fact that they don't play by any rules at all. Grabbing a valid email address is like finding a heads-up penny in the street to them. Even if they just watched a little old lady drop a bunch of change in a supermarket, they'll pick it up and keep it.
Got it from O'Reilly's "Stopping Spam". It's a Procmail recipe that composes a reply and then looks for the new To: address in a locally-stored whitelist. If the address is found, the email is accepted. Otherwise, it returns an email with instructions. The sender just has to resend one email with the password in the subject line.
Totally self-maintaining. Spammers don't get replies and can't add themselves to your list. Even on the off-chance they did, no spammer is going to put "flarkelmarkle" in their subject line just so that one freaking person can get their crap.
If you are getting 40 spams a day, you are doing something stupid.
Hey, that's a little harsh. Some of us here have posted to Usenet long before it was "stupid" to do so using a non-spam-protected email address. Back when people thought you could actually get in *trouble* for spam-protecting your email address because you were violating an Internet RFC.
Now with Google Groups bringing twenty years of Usenet back online for easy searching, one can only imagine how many "new" (new == really really old) email addresses have been snarfed. Of course, I'm sure my really old ones are circulating on a number of CDs. I've had my current one since 95 and I get about 35 to 40 spams a day. Luckily my provider uses some technique to mark all but five or so a day with an X-Spam-Warning.
Bandwidth costs are not storing. There is a ton of left over bandwidth from the.COM bubble which is going unused
I'm assuming you meant "soaring", not "storing". It's funny you should make this comment because today's USA Today has an article that explains precisely why bandwidth charges will soon start to soar. Bandwidth left over from the.com era is in DARK fibre. And while the telecoms that bought all that fibre are going under, it costs **20 times as much** as the purchase price of all that fibre to actually light it up. Not to mention it takes 9 to 18 months to do it.
So while bandwidth needs will continuously climb at dramatic rates, no one is starting projects to actually light up all that fibre to meet 1q04 needs. The article compares dark fibre to seed that farmers buy. You can't compare seed in a silo to corn being sold in a supermarket.
As a matter of fact, it is the most effective form of advertising.
Not in my house. I especially like the ads for pool cleaning, lawn care, and driveway repaving as I live in a condo. I taught my wife how to spot spam quickly in her Yahoo! inbox and luckily its carried over to our postal mail to. All our junk mail is a huge pain in the aishe and huge waste of time.
I took a tour of a major defense contractor a couple years ago. They have two separate PCs on each desk, with two separate cable runs -- one to the company network and the Internet and the other to a private military network. They have two separate phone networks, too. The guy took me through *three* swipe card doors to show me their kerberos keyserver. I saw Wargames-like status boards showing link states to various bases across the country and around the world. Over lunch I asked about secret networks, and he says there are at least 4 "Internets, if you will" that he knew of, and was pretty sure there were a few more. They gave the the crappiest one to the general public to play with.
I asked him what would happen if an email intended for the "dark side inbox" somehow landed in the "light side inbox" (his words, not mine). He said guys in dark sunglasses would be there shortly thereafter.:)
Slashdot Mirror
postmaster@127.0.0.1 and abuse]@127.0.0.1postmaster@127.0.0.1 and abuse@127.0.0.1
Good idea but, I'm sure spam software has been rejecting 127.0.0.1 for many years.
How about a few people volunteering real FQDNs that all resolve to 127.0.0.1? I realize that people would be volunteering horsepower and bandwidth for DNS lookups, but it would be in the name of dramatically reducing spam. Then, keep a list of all the "loopback FQDN's" and let the rest of us feed those FQDN's into spam-trap generators. Eventually, there would be so many real-looking spam trap email addresses that the spam software wouldn't be able to keep up with the list of loopback FQDN's.
To take it to the next level, you could hide the list of "loopback FQDN's" by making a reverse DNS lookup against a couple of volunteered IP addresses return a random FQDN from the list of loopback FQDN's at the time that the spamtrap page is dynamically generated.
Spammers would never know the entire list of FQDN's that resolve to loopback.
What is Dutch Courage??
I think that's the name of a song from one of Steve Albini's incarnations, Rapeman, and I always wondered what it meant.
I may have skimmed a little too lightly, but I didn't see anyone mention that CNN actually runs one of the best IRC servers used for interactive televsion! When Mir was returning to Earth, there were well over 800 people in the room.
Then, with Talkback Live, they make excellent use of AIM and IRC. Very forward thinking.
Picture 412 is of downtown Pittsburgh, PA... which also happens to be one of their telephone area codes!
You know, I was thinking about that, too. But in the earlier comments discussing speedometer vs odometer. I found myself thinking that if I had a camera pointing sideways out one of my windows while I was driving, every picture would be blurry. However, if you chose a 90 degree angle and rotated the camera between 0 degrees (pointing straight out the side) and 90 degrees (pointing straight out the windshield) by 1 degree per mile per hour, I would think you would drastically reduce the number of blurry pictures.
The added benefit of course would be to have 30 chances to get the mountains that are ahead of you, instead of wasting those shots on wheat or whatever it is. Of course, if you set your cruise at 80mph, most of your pictures will have the frame of your car slicing right down the middle. Roofcam!
You really got me thinking - thanks
;)
:)
np dude, hth
now if I would only follow my own advice! I run it with no WEP, and full class C on DHCP on the edge of a 1,200-unit condo development. Wireless *whore*
I did a walkaround of my property with the laptop, and no usable signal gets past my property line
Problem is, high gain antennas work in *both* directions.. transmit and receive. So while you may not have detected any usable signal with your laptop, I doubt you tested it with the six foot long log periodic, the 60-mile dish, or the 120-mile dish I have. Your neighbors could put pringles cans in their attic (or basement if they have a direct shot to your basement windows) and hit your network.
By using an 18" long commercial version of the pringles can (make and model escape me) on the client side, I was able to add another couple hundred yards of usable distance when hitting a Linksys AP that uses a **PC Card** as its antenna (read as "no external antennas"). WEP will only keep out the "plug and play hackers" but that's it. And even without your network settings, sniffers will get your broadcasts, like ARPs, and see what IP addresses you're using. Best protection there is to setup a subnet of 4 or 8 hosts with a standard default gateway (192.168.1.1) to throw them off so if they try to use a high IP far away from the ones you're using, they'll be out of your subnet. Can't get to the net or your boxes.
You can't ever think you have radio waves under control. They work in mysterious ways. With an 18" dish, you can pick up a ham satellite on 2.4GHz 30,000km away.
You need to know how to setup servers and handle a computer. They actually have you troubleshoot a purposefully broken computer. If you can't diagnose it, you don't pass
You have to do that **four** times. You also have to build a system from scratch which meets a list of required features and REQUIRES a kernel recompile. I watched a five-year AIX'er fail and a four year Solaris guy hack his way through. An MCSE was there "to see what Linux was all about" - um, FAIL.
The pci slots are all hot swap, the drives are all hot swap, the power supplies are hotswap etc. And they still cost a very small fraction of a mainframe
You're right.. I too have worked with Compaqs that have all those features. The original poster said he was running "an oldish Dell". Of course, the full-featured Compaq boxes did come close to the $18k mark, which approaches the $26k Winnebago spent on upgrading the mainframe to support their new Linux operations. Add another virtual server, and their choice was much more cost effective. Add ten more virtual servers and its no question which choice was better.
I'll run my setup script to bring another virtual server online in about 5 minutes, and you'll start over asking for another $15k for YAB.
I've got an old Dell server running an oldish version of RedHat and Cyrus, serving email for about 1200 users. The machine is far from taxed right now
I think a lot of Intel-oriented people would be floored if they learned about the hardware reliability and flexibility that mainframes offer. Do you have dual power supplies in your Dell box? Can you hot swap them? Do you have hardware RAID? What about redundant hardware RAID attached to a dual-channel RAID storage box (also with dual hot-swap power supplies)? Can you hot plug your processors? RAM? RAID controllers?
A key feature of Linux is that it lets you select reliability and availability just by turning a dial. From handhelds to Intel to RISC to midrange and mainframe, you get to decide how mission critical your apps are. If you accidentally unplug your Dell box, your users are SOL until it reboots.
if you are thinking of taking the [fast track] RHCE course I really enjoyed it.
Same here, last June. And when I took my Linux on S/390 training in December, I was in class with people from a major online bill payment company, a major auto insurer, Canada's DOD, and many others. Most had already deployed it and wanted to see what they hadn't figured out for themselves yet.
In August, 2000, I sat next to an IBM'er by coincidence on a flight. He saw I was reading the "Linux for S/390" RedBook. He said I'd become a "demigod" if I get into that. I've already gone thru one consolidation project, starting a second one on Monday in NYC, and have a third one queued up, waiting for me to finish up in NY. It seems we recently gave a customer a server upgrade plan, and they replied, "what, no Linux?" So we're redoing it as a consolidation plan for Linux on S/390.
I'd say Linux on S/390 is picking up steam big time. When I spoke to a friend about this setup, he replied, "Wow, you finally sound like one of those mainframe IBM'ers we used to make fun of!" Of course, he still has no reply to the argument that I can reduce just about any single data center to a couple of 48U racks, and give all the servers five nines.
'ssh -l user ftp.site.com'
I always run ssh user@ftp.site.com since its the same as my email address on that box, or better yet, create and use an identical account on the local machine and just run ssh ftp.site.com.
Its like people running zcat somefile.tar.gz | tar xvf - when you can run tar zxvf somefile.tar.gz. Same for bzcat and what, 'j' instead of 'z'? Maybe it helps some people keep it straight in their heads that they're literally piping the output of a zcat into a tar, like peeling layers of an onion. Me.. I just like to save typing.
I needed an answer to this today anyway, so perfect timing..
what ports do I need to forward via ssh to use windows terminal server?
not my choice.. I get to go home for the weekend if I can remote control the servers from there.
awesome movie. Yes, that's exactly what popped into my head upon first glance. Of course, it was my daily after school fare for a couple of years in the mid-80's. but then I got to thinking that this taking the "easy" way to achieving that goal.
as for not being able to feel the bat-like 6th sense, I can totally wrap my mind around "feeling" a wall that is six feet away from me in total darkness, if this device provides some sort of stimulus based on ultrasound. Of course, the thought of feeling pressure against my skin from something I'm not touching would probably drive me nuts after a day or so. I'd rather have implanted bluetooth paired up with a system that reacts to my thoughts first. Home automation meets Firefox!
Talk about freaking out a date when you bring her home!
Because I wrote the mail system
DAMN!!!!!!!!!
I wonder when someone will put together a scaled-down linux distro that competes with AOL
If you've read the AOL/RedHat stories lately, you'll see that a number of us think AOL should put out their own distro, targetted at the older PCs families are now replacing. Something to turn them into an AOL kiosk, if you will, without all the hassles of putting out your own device a la the Gateway thing. Imagine the reduction in support costs when AOL owns the OS *and* the client? Done well, I'd give it to my grandmother. Anything to stop having to explain Application Execution Errors.
Also, AFAICT, all the AOL dialup numbers are now PPP. Or so Windows reports a new PPP adapter with more recent versions. They've already leaked a Linux client for internal use only, so you know they've got some skunkworks going on.
I always thought a mail bomb was doing something like forging a request for the control file (or something huge) from NNTP servers. You post it to a newsgroup, and all the (now considered misconfigured) servers that receive your article would mail megabytes upon megabytes to the forged email address. The victim would get 100MB of mail a day for about a week. Now THAT was a mail bomb!! :)
This is more of a "crash the server exploit", or as many have already said, "DoS attack".
I do expect that it will be reasonable human beings with an interest in communicating with me. Fradulently titled commercial email that I get 7 copies of (3 email aliases and 4 mailing lists that I'm on) don't count
That's like yelling "no fair!" at a playground. You have to get over the fact that they don't play by any rules at all. Grabbing a valid email address is like finding a heads-up penny in the street to them. Even if they just watched a little old lady drop a bunch of change in a supermarket, they'll pick it up and keep it.
or display it as a non-hyperlinking image.
Check it out here.
Got it from O'Reilly's "Stopping Spam". It's a Procmail recipe that composes a reply and then looks for the new To: address in a locally-stored whitelist. If the address is found, the email is accepted. Otherwise, it returns an email with instructions. The sender just has to resend one email with the password in the subject line.
Totally self-maintaining. Spammers don't get replies and can't add themselves to your list. Even on the off-chance they did, no spammer is going to put "flarkelmarkle" in their subject line just so that one freaking person can get their crap.
Nah... I'm talking 9 years now. Egads. 9 years. I need to sit down. :)
If you are getting 40 spams a day, you are doing something stupid.
Hey, that's a little harsh. Some of us here have posted to Usenet long before it was "stupid" to do so using a non-spam-protected email address. Back when people thought you could actually get in *trouble* for spam-protecting your email address because you were violating an Internet RFC.
Now with Google Groups bringing twenty years of Usenet back online for easy searching, one can only imagine how many "new" (new == really really old) email addresses have been snarfed. Of course, I'm sure my really old ones are circulating on a number of CDs. I've had my current one since 95 and I get about 35 to 40 spams a day. Luckily my provider uses some technique to mark all but five or so a day with an X-Spam-Warning.
Bandwidth costs are not storing. There is a ton of left over bandwidth from the .COM bubble which is going unused
.com era is in DARK fibre. And while the telecoms that bought all that fibre are going under, it costs **20 times as much** as the purchase price of all that fibre to actually light it up. Not to mention it takes 9 to 18 months to do it.
I'm assuming you meant "soaring", not "storing". It's funny you should make this comment because today's USA Today has an article that explains precisely why bandwidth charges will soon start to soar. Bandwidth left over from the
So while bandwidth needs will continuously climb at dramatic rates, no one is starting projects to actually light up all that fibre to meet 1q04 needs. The article compares dark fibre to seed that farmers buy. You can't compare seed in a silo to corn being sold in a supermarket.
As a matter of fact, it is the most effective form of advertising.
Not in my house. I especially like the ads for pool cleaning, lawn care, and driveway repaving as I live in a condo. I taught my wife how to spot spam quickly in her Yahoo! inbox and luckily its carried over to our postal mail to. All our junk mail is a huge pain in the aishe and huge waste of time.
I took a tour of a major defense contractor a couple years ago. They have two separate PCs on each desk, with two separate cable runs -- one to the company network and the Internet and the other to a private military network. They have two separate phone networks, too. The guy took me through *three* swipe card doors to show me their kerberos keyserver. I saw Wargames-like status boards showing link states to various bases across the country and around the world. Over lunch I asked about secret networks, and he says there are at least 4 "Internets, if you will" that he knew of, and was pretty sure there were a few more. They gave the the crappiest one to the general public to play with.
:)
I asked him what would happen if an email intended for the "dark side inbox" somehow landed in the "light side inbox" (his words, not mine). He said guys in dark sunglasses would be there shortly thereafter.