the imageboards are down yet again

you should be thankful that world4ch has such a reliable server

Their twitter is empty, and youtube only matches for some touhou videos

>>80
who are you quoting?

>>82
>>79 i missed a number in post.

>>77
They could just DDoS with TCP packets, you know.

>>84
UDP packets are stateless, primitive chunks of data which can be faked at will.
TCP packets are part of a connection, which has to be maintained by both sides.
Its easier to drop bad TCP packets and they're more predictable.

If it ain't Lisp, it's crap.

Lisp is shit.

>>84
Not FrozenVoid here, but that's a really dumb reason not to filter UDP traffic. It's like saying you don't need a lock on your door because a burglar could just pick it anyway.

Doing something like a SYN flood requires more knowledge of the bots' OS. Since botnets are very likely to be on Windows machines, do note that after XP SP2 it is impossible to just use the Winsock API to send raw TCP packets. Therefore knowledge/understanding of the Windows kernel and the ability to program drivers is required to do a SYN flood from XP SP2 or later. An UDP flood is very simple to implement for any 15-year old wannabe hacker, a SYN flood is harder. This is equivalent to the lockpicking skills needed for the burglar in the earlier example.

>>88

but people just download tools to do this stuff. IE, the burglar walks around with a lock cutter and power tools that he or she found in the street. But yeah, in general it is a good idea to block anything that you don't need.

>>89
You mean, it's a good idea to allow only what you need, right?

is it down again?

>>91
Apparently, yes. /c/ is not loading for me.

The fact that this DDoS UDP/SYN flooding bullshit is possible shows that there is a fundamental error in the architecture of the internet, whoever designed this piece of shit should be murdered. Completely fucking ridiculous.

>4chan ISP
>competence

>>93
In May 1974 the Institute of Electrical and Electronic Engineers (IEEE) published a paper entitled "A Protocol for Packet Network Interconnection."[1] The paper's authors, Vint Cerf and Bob Kahn described an internetworking protocol for sharing resources using packet-switching among the nodes. A central control component of this model was the Transmission Control Program that incorporated both connection-oriented links and datagram services between hosts. The monolithic Transmission Control Program was later divided into a modular architecture consisting of the Transmission Control Protocol at the connection-oriented layer and the Internet Protocol at the internetworking (datagram) layer. The model became known informally as TCP/IP, although formally it was henceforth called the Internet Protocol Suite.

>>95
What an aspie

>>93,95
We need to modernize this shit, 1974, really?

I'm starting my own internet.

Check my TCP/IP dubs.

>>99
Check mine.

>>97
http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_9-4/syn_flooding_attacks.html
Lessons Learned

The protocol flaw in TCP that makes SYN flooding effective is that for the small cost of sending a packet, an initiator causes a relatively greater expense to the listener by forcing the listener to reserve state in a TCB. An excellent technique for designing protocols that are robust to this type of attack is to make the listener side operate statelessly [3] until the initiator can demonstrate its legitimacy. This principle has been used in more recent transport protocols, such as the Stream Control Transmission Protocol (SCTP) [4], which has a 4-way handshake, with listener TCB state being created only after the initiator echoes back some "cookie" bytes sent to it by the listener. This echo proves to some extent that the initiator side is at the address it appears to be (that is, it has return reachability) and is not attempting a SYN flooding style of attack.

>>101
That's what SYN cookies are for.

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