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Pushback against DDOS Attacks
Huusker writes "Steven Bellovin and others at ATT Research Labs and ICIR have come up with mechanism to stop DDOS attacks. The idea is called Pushback. When the routers get flooded they consult a Unix daemon (/etc/pushbackd) to determine if they are being DDOS'ed. The routers propagate the quench packets back to the sources. The policy and propagation are separate, allowing hardware vendors to concentrate on the quench protocol while the white hats invent ever more clever DDOS detection filters for /etc/pushbackd. The authors of the paper have an initial implementation
on FreeBSD."
It is official; Netcraft now confirms: *BSD is dying
One more crippling bombshell hit the already beleaguered *BSD community when IDC confirmed that *BSD market share has dropped yet again, now down to less than a fraction of 1 percent of all servers. Coming on the heels of a recent Netcraft survey which plainly states that *BSD has lost more market share, this news serves to reinforce what we've known all along. *BSD is collapsing in complete disarray, as fittingly exemplified by failing dead last in the recent Sys Admin comprehensive networking test.
You don't need to be a Kreskin to predict *BSD's future. The hand writing is on the wall: *BSD faces a bleak future. In fact there won't be any future at all for *BSD because *BSD is dying. Things are looking very bad for *BSD. As many of us are already aware, *BSD continues to lose market share. Red ink flows like a river of blood.
FreeBSD is the most endangered of them all, having lost 93% of its core developers. The sudden and unpleasant departures of long time FreeBSD developers Jordan Hubbard and Mike Smith only serve to underscore the point more clearly. There can no longer be any doubt: FreeBSD is dying.
Let's keep to the facts and look at the numbers.
OpenBSD leader Theo states that there are 7000 users of OpenBSD. How many users of NetBSD are there? Let's see. The number of OpenBSD versus NetBSD posts on Usenet is roughly in ratio of 5 to 1. Therefore there are about 7000/5 = 1400 NetBSD users. BSD/OS posts on Usenet are about half of the volume of NetBSD posts. Therefore there are about 700 users of BSD/OS. A recent article put FreeBSD at about 80 percent of the *BSD market. Therefore there are (7000+1400+700)*4 = 36400 FreeBSD users. This is consistent with the number of FreeBSD Usenet posts.
Due to the troubles of Walnut Creek, abysmal sales and so on, FreeBSD went out of business and was taken over by BSDI who sell another troubled OS. Now BSDI is also dead, its corpse turned over to yet another charnel house.
All major surveys show that *BSD has steadily declined in market share. *BSD is very sick and its long term survival prospects are very dim. If *BSD is to survive at all it will be among OS dilettante dabblers. *BSD continues to decay. Nothing short of a miracle could save it at this point in time. For all practical purposes, *BSD is dead.
Fact: *BSD is dying
SYSTEM V ON YOUR ASS FOO'!
So why now? Why did *BSD fail? Once you get past the fact that *BSD is fragmented between a myriad of incompatible kernels, there is the historical record of failure and of failed operating systems. *BSD experienced moderate success about 15 years ago in academic circles. Since then it has been in steady decline. We all know *BSD keeps losing market share but why? Is it the problematic personalities of many of the key players? Or is it larger than their troubled personalities?
The record is clear on one thing: no operating system has ever come back from the grave. Efforts to resuscitate *BSD are one step away from spiritualists wishing to communicate with the dead. As the situation grows more desperate for the adherents of this doomed OS, the sorrow takes hold. An unremitting gloom hangs like a death shroud over a once hopeful *BSD community. The hope is gone; a mournful nostalgia has settled in. Now is the end time for *BSD.
1: Write free software.
2: ?
3: Pushback packets.
4: Profit!
XL Push-back pallet racking
Pushback Tow Tractor JG-75/100 Low Profile
The low-profile design on this aircraft pushback tug was originally designed for use on aircraft carriers. These tugs can now be seen throughout the world in corporate hangars for use with many of today's bizjets.
Pushback
When a player with Frenzy blocks a player with Stand Firm, a pushback result forces another block attempt just as if the Stand Firm player had moved.
see also: Frenzy Stand Firm
A player with Side Step may move into any adjacent square when he is pushed back. However, he must choose an empty square over an occupied square. If there are no empty squares, he must choose out of bounds over an occupied square. If all adjacent squares are occupied, he may choose to move into any occupied square (pushing the current occupant) that is adjacent except the square of the player who pushed him.
see also: Side Step
When a player with Horns and Frenzy is blitzing, in order to get the +1 ST bonus from horns, the blizter must move a square for each hit. (He would lose his horns bonus after the first hit against a Stand Firm player.)
see also: Horns Frenzy Blitz Stand Firm
A dice roll result of PUSHBACK (or PUSHBACK/POW with Dodge) counts as a Pushback result even though the player doesn't move. So, skills like Strip Ball and Frenzy will work against a Stand Firm player, and if hit by a Diving Tackler, a Pushback result ends the Stand Firm player's action.
see also: Stand Firm Strip Ball Frenzy Diving Tackle
A player who is pushed back into a square in which the football is lying, does NOT get to attempt to pick it up. The ball scatters.
see also: Pick Ups
When choosing the square that a player is pushed into, Empty squares must be chosen over occupied squares or out of bounds. Out of Bounds must be chosen over an occupied square. A square containing a non-Stand Firm player must be chosen over a square containing a Stand Firm player.
see also: Stand Firm
When one player is pushed into another player, the coach of the player who made the block should choose where that third player is pushed following the normal rules for choosing push back location. If this results in a player being pushed out of bounds and injured, the original blocker shall receive 2 SPP's for the Casualty IF it was an opponent.
You may be pushed out of the Tentacle TZ without rolling to escape the tentacles.
see also: Tentacles
Come on, kids. It's not the 80s anymore (though, I'm willing to bet the guys at AT&T Research labs aren't kids, and they actually might remember when /etc was the best place to put those things... but it's not anymore... especially not on freebsd!