Sure, you can send to @123.123.123.123, but it wouldn't go anywhere as 64-126.*.*.* is reserved by the greedy IANA. Just kidding.
The DNS system provides an "MX" resource-record for handling mail exchangers. Before the MX record, to send mail one would resolve the DNS using an A record, and connect to the resulting IP address. Nowadays, *@foobar.com doesn't have to always be handled by 140.186.139.224. In fact, there is a nice system set up for prioritizing mail handlers, built into DNS's MX records:
host google.com
google.com mail is handled (pri=10) by smtp1.google.com
google.com mail is handled (pri=20) by smtp2.google.com
google.com mail is handled (pri=40) by smtp3.google.com
To answer your question, you can use IP addresses. But you'll be missing out on the prioritized DNS mail system. And don't worry about this being offtopic, the article isn't that all interesting anyways--I'd rather teach someone something interesting than write lame drivel about some "backbone DDoS" that's not even a backbone DDoS. Hey, its about the structure of the Internet...
Okay...I Googled for "randall hyde sucks" in both web and groups, and couldn't find anything. You're right about me not being a UCR student...though I might be soon, depending on my SAT. Maybe you could enlighten me on Hyde's assholeness, if you would be so kind.
I have found AoA to be extremely useful in my understanding of Boolean Algebra, Chapter 2 covered the basic postulates, theorems, functions very well. I printed the "16 Possible Boolean Functions of Two Variables" table he included and kept it in a handy location. I first came across minterms/maxterms and how they are used to find the canonical expression, as well as k-maps for optimization. I don't particularly like Hyde's assembly library however, for me the Intel Programmers Manual Volume 1-3 dead tree book was most clear and straight-forward, unlike assembly "tutorials".
I challenge you to provide a link to a better reference than Hyde's AoA that explains boolean algebra more clearly and more comprehensively. Go ahead.
Sure, do an AXFR (A-record transfer) with DiG on a root server. Of course, you have to be a priviledged user--AXFR requires full-duplex TCP instead of an ordinary UDP connection, so unfortunately *.root-servers.net and *.gtld-servers.net don't allow transfers. Yet some of the international country-code TLDs (ccTLDs) allow AXFR transfers; if you wanna host.AG or whatever just do a dig axfr and you're good to go.
Correct, I know of no DNS servers, even djbdns DNS', which restrict queries to a limited IP range as is common with SMTP. There's not really a large risk in opening up your DNS to everyone, in fact, you there are plenty of alternate DNS root servers.
You make a good point; if cars is a boolean variable (can our AC be a Lisp programmer perchance?) you have proven wheels is its logical complement or negation, depending on your processor. Boolean algebra is not as difficult to grasp as the other algebras, such as wonder and dd if=/dev/car of=/dev/wheel bs=`cat/dev/spoke', but you got to start with some assumption to make any post, Internet DDoS or not.
Regardless, regarding syntax, the binary infix notation is not to be ashamed of. a != b is commonplace in imperative languages; I can't speak for Lisp which you seem to be intimiately familiar with, but its well-understood in Slashdot culture at least in my limited experience. In similar vein, a = !b is also accepted, its standard C++ semantics believe it or not. The alternative, a = b' used in Randall's Art of Assembly, is no more or less favorable. Prefix or postfix, its all the same.
As I'm sure you are aware, != is what it is due to our limited rendition of mathematical binary logical operators thanks to ASCIIization of the Internet (what ASCII bytes where sent to the backbones to DDoS them? ADM, perhaps?!), and although Unicode is now a standard, 3.0 being the largest and most complete compendium ever notwithstanding Unihan CJK languages, Slashdot choses to return the same identical Content-Disposition header ignoring actual content. This forces one to write != rather than the preferred "Equal Sign With Slash Overbar", approximated/= by some, not to be confused with auto-assignment division, but you have to compromise somewhere. I would have written = U+"COMBINING SLASH" or, in canonical form U+02AF2 "NOT EQUAL/LESS THAN OR GREATER THAN", but what do I look like, a Unicode-compatible typist?
Wheels can exist without cars, everyone agrees on that. Of course, cars cannot drive without wheels--you can't go anywhere, but your kids can still fiddle in the back with the radio and color DVD players, their own XBOX, and our 802.11b-linked Home Entertainment System. If you see SSID=NACHONETWORK, I have embedded a buffer overflow in our SSID which exploites NetStumbler and is able to create a connect-back rootshell on my MacOS server. I'll show you the forest in the trees, just wait for your magic Christmas tree packet!
Quite often, in fact. I only visit a few sites daily (Slashdot, El Reg, and the rest) and my box caches the domain names, therefore I never touch DNS. Couple that with leaving my computer on 24/7, and I have effectively eliminated egress DNS traffic.
You make some good points, but the Domain Naming Server system is in fact largely distributed. Ever notice how when you configure your network stack you have enter a DNS server? That's your ISP's DNS server, its not one of the 13 root servers. Verizon gives its users 3 servers for translating numbers to names: vnsc-pri.sys.gtei.net (4.2.2.1), vnsc.bak.sys.gtei.net (4.2.2.2), vnsc-lc.sys.gtei.net (4.2.2.3), and for internal use, i-will-not-steal-service.gtei.net (4.2.2.4), Earthlink has 207.217.120.109, and even the smallest local ISP has its own DNS server.
DNS is hierarchical, both is naming and in server implementation. Small ISPs cache their DNS from more major providers, up until the A to J.ROOT-SERVERS.NET main Internet servers. There is in fact one critical file, but it is mirrored to the 13 root servers, and domain look-ups are cached at the ISP level. I'm not suprised most Internet users were not affected, you wouldn't be affected if several large mail servers where DDoSed would you?
You misread. "A unit of WorldCom Inc." refers to UUNET, not the two servers. I'm not suprised UUNET handles half of the world's traffic, as USA-USA connections have the most bandwidth usage. America is the world's most bandwidth-rich nation, no suprise there.
Simply put, you're thinking wrongly. One-to-many NAT is an ugly hack and has no place on IPv6ernet. One-to-many NAT breaks the fundamental structure of the Internet, where one can assume each address refers to a machine, and TCP/UDP ports on each machine can be opened at will.
NAT breaks peer-to-peer. You can't have a standard port, say, 1214, open on several NAT'd computers and expect them to communicate with multiple computers behind another NAT. You have to rely on the kludge of redirecting ports to local IPs! This totally defeats IANA Well-Known Port Assigments. Ack.
NAT may be fail-safe, but no more fail-safe than deny ip all, with appropriate accept lines letting the traffic you don't want in.
I applaud the US judical system for approving and using such laws in America, but the whole world isn't the USA. We need a world-trade law, perhaps mandated by the WTO, to prevent spammers from breeding.
Of course, there's always relays.osirusoft - a cross-referenced database of nearly all DNS blacklists.
Clearly its a conspiracy we cannot perceive. Initiated death is accepted, initiated procreation is not. Humankind has swayed towards violence as its population has grown out of control, out of bounds, out of reach of the world's food supply--and it has turned back on itself, condemning creation, encouraging the opposite. It's a perfectly natural biological phenonmena--ever put a dozen pigons in an oversmall pen? They don't fuck, they kill.
do not take the above poster's advice. Ripping caps off your TV's PCB can accumulate an electric charge otherwise dampened by the horizontal flux, aiming the CRT electron gun at a choice point with full intensity. You have been warned.
In other news, there be's regulations one must follow legally. The removal of capacitors or resistors often violates FCC regulations and you'll face jail or at least a slap on the wrist, Big Brother's wrist.
No, you must use your XBox illegally after the modification has taken place. If one was to destroy an XBox and the broken peaces as catlitter, for example, you've illegally modified Microsoft products and will be facing a jail sentence.
I had no idea. While I read Anandtech, Timshardware, and BugTraq for hardware-related technical or security news, what would the Slashdot crew consider a "good" news source? Slashdot, of course, being a metanews site--where would one read daily to be informed and educated about general issues, such as gaming?
Slashdot Mirror
The DNS system provides an "MX" resource-record for handling mail exchangers. Before the MX record, to send mail one would resolve the DNS using an A record, and connect to the resulting IP address. Nowadays, *@foobar.com doesn't have to always be handled by 140.186.139.224. In fact, there is a nice system set up for prioritizing mail handlers, built into DNS's MX records:
To answer your question, you can use IP addresses. But you'll be missing out on the prioritized DNS mail system. And don't worry about this being offtopic, the article isn't that all interesting anyways--I'd rather teach someone something interesting than write lame drivel about some "backbone DDoS" that's not even a backbone DDoS. Hey, its about the structure of the Internet...
I have found AoA to be extremely useful in my understanding of Boolean Algebra, Chapter 2 covered the basic postulates, theorems, functions very well. I printed the "16 Possible Boolean Functions of Two Variables" table he included and kept it in a handy location. I first came across minterms/maxterms and how they are used to find the canonical expression, as well as k-maps for optimization. I don't particularly like Hyde's assembly library however, for me the Intel Programmers Manual Volume 1-3 dead tree book was most clear and straight-forward, unlike assembly "tutorials".
I challenge you to provide a link to a better reference than Hyde's AoA that explains boolean algebra more clearly and more comprehensively. Go ahead.
Alright man, I got +! KARMA and +& REPLIES. Who'se !Smart now?
Sure, do an AXFR (A-record transfer) with DiG on a root server. Of course, you have to be a priviledged user--AXFR requires full-duplex TCP instead of an ordinary UDP connection, so unfortunately *.root-servers.net and *.gtld-servers.net don't allow transfers. Yet some of the international country-code TLDs (ccTLDs) allow AXFR transfers; if you wanna host .AG or whatever just do a dig axfr and you're good to go.
Correct, I know of no DNS servers, even djbdns DNS', which restrict queries to a limited IP range as is common with SMTP. There's not really a large risk in opening up your DNS to everyone, in fact, you there are plenty of alternate DNS root servers.
Yes, IP is more important than DNS. But is Ethernet more important than TCP?
Regardless, regarding syntax, the binary infix notation is not to be ashamed of. a != b is commonplace in imperative languages; I can't speak for Lisp which you seem to be intimiately familiar with, but its well-understood in Slashdot culture at least in my limited experience. In similar vein, a = !b is also accepted, its standard C++ semantics believe it or not. The alternative, a = b' used in Randall's Art of Assembly , is no more or less favorable. Prefix or postfix, its all the same.
As I'm sure you are aware, != is what it is due to our limited rendition of mathematical binary logical operators thanks to ASCIIization of the Internet (what ASCII bytes where sent to the backbones to DDoS them? ADM, perhaps?!), and although Unicode is now a standard, 3.0 being the largest and most complete compendium ever notwithstanding Unihan CJK languages, Slashdot choses to return the same identical Content-Disposition header ignoring actual content. This forces one to write != rather than the preferred "Equal Sign With Slash Overbar", approximated /= by some, not to be confused with auto-assignment division, but you have to compromise somewhere. I would have written = U+"COMBINING SLASH" or, in canonical form U+02AF2 "NOT EQUAL/LESS THAN OR GREATER THAN", but what do I look like, a Unicode-compatible typist?
Wheels can exist without cars, everyone agrees on that. Of course, cars cannot drive without wheels--you can't go anywhere, but your kids can still fiddle in the back with the radio and color DVD players, their own XBOX, and our 802.11b-linked Home Entertainment System. If you see SSID=NACHONETWORK, I have embedded a buffer overflow in our SSID which exploites NetStumbler and is able to create a connect-back rootshell on my MacOS server. I'll show you the forest in the trees, just wait for your magic Christmas tree packet!
Now can I go?
Quite often, in fact. I only visit a few sites daily (Slashdot, El Reg, and the rest) and my box caches the domain names, therefore I never touch DNS. Couple that with leaving my computer on 24/7, and I have effectively eliminated egress DNS traffic.
DNS is hierarchical, both is naming and in server implementation. Small ISPs cache their DNS from more major providers, up until the A to J.ROOT-SERVERS.NET main Internet servers. There is in fact one critical file, but it is mirrored to the 13 root servers, and domain look-ups are cached at the ISP level. I'm not suprised most Internet users were not affected, you wouldn't be affected if several large mail servers where DDoSed would you?
You misread. "A unit of WorldCom Inc." refers to UUNET, not the two servers. I'm not suprised UUNET handles half of the world's traffic, as USA-USA connections have the most bandwidth usage. America is the world's most bandwidth-rich nation, no suprise there.
Its not the truth. The Internet != DNS.
Fuck VisualRoute. Use the Sarangworld Traceroute Project instead. Not only do you get a nice web-based interface, but the Perl patterns and SLLY-code to long+lat is open source!
NAT breaks peer-to-peer. You can't have a standard port, say, 1214, open on several NAT'd computers and expect them to communicate with multiple computers behind another NAT. You have to rely on the kludge of redirecting ports to local IPs! This totally defeats IANA Well-Known Port Assigments. Ack.
NAT may be fail-safe, but no more fail-safe than deny ip all, with appropriate accept lines letting the traffic you don't want in.
Why stop at /24? My ISP gives out /8's. I could easily reauthenticate with the DHCP server and get an IP not in my original subnet.
..the elusive "five dollar plasma weapon!".
Via a search engine? Tell me if I'm right.
Of course, there's always relays.osirusoft - a cross-referenced database of nearly all DNS blacklists.
Only kidding. Virgin *smirk*
The answer is clearly explained here. Cheers.
Clearly its a conspiracy we cannot perceive. Initiated death is accepted, initiated procreation is not. Humankind has swayed towards violence as its population has grown out of control, out of bounds, out of reach of the world's food supply--and it has turned back on itself, condemning creation, encouraging the opposite. It's a perfectly natural biological phenonmena--ever put a dozen pigons in an oversmall pen? They don't fuck, they kill.
Point taken, but if you don't use the newly modified device, its not a mod. At least thats the legal definition.
In other news, there be's regulations one must follow legally. The removal of capacitors or resistors often violates FCC regulations and you'll face jail or at least a slap on the wrist, Big Brother's wrist.
Not to mention pirates...no one I would know of course.
No, you must use your XBox illegally after the modification has taken place. If one was to destroy an XBox and the broken peaces as catlitter, for example, you've illegally modified Microsoft products and will be facing a jail sentence.
I had no idea. While I read Anandtech, Timshardware, and BugTraq for hardware-related technical or security news, what would the Slashdot crew consider a "good" news source? Slashdot, of course, being a metanews site--where would one read daily to be informed and educated about general issues, such as gaming?