Jim, I am using Debian Etch with: 2.6.22.6 customized kernel Iptables from the Stable (Etch) branch I got Iptables sources also from the stable branch: apt-get source iptables ln -s /usr/src/iptables-1.3.6.0debian1/iptables /usr/src/iptables-1.3.6 I downloaded ipp2p-0.8.2.tar.gz from its site, and Modified the Makefile to use CC instead of ld. Working fine so far. Mario Antonio ----- Original Message ----- From: "Jim Barber" <jim.barber@xxxxxxxxxxxxx> To: lartc@xxxxxxxxxxxxxxx Sent: Saturday, October 6, 2007 1:52:45 AM (GMT-0500) America/New_York Subject: ipp2p segmentation fault Hi all. On Sep 26th I decided to try and get ipp2p working on my machine that acts as a gateway for my Internet connection. This machine is running Debian. I performed the install by doing the following steps: - I installed the Debian package called linux-source-2.6.22 for my Linux kernel source and unpacked the resulting tar.bz2 file. - From the netfilter.org site I downloaded the following snapshot packages and unpacked them into my build area: iptables-1.3.8-20070925.tar.bz2 patch-o-matic-ng-20070925.tar.bz2 - I ran the patch-o-matic-ng runme script correctly defining the KERNEL_DIR and IPTABLES_DIR parameters. I also used the --download parameter so that it would fetch the ipp2p out-of-tree repository. - When running the patch-o-matic-ng script I said 'No' to all the extensions except for the ipp2p one since that is all I was interested in. The patch seemed to successfully apply. - I configured and built the Linux sources enabling all the netfilter modules that I needed (including the ipp2p one that is now patched in). - I then built and installed the kernel. - I also built and installed the iptables package (again specifying the KERNEL_DIR parameter) This new iptables is installed under my /usr/local/ tree which is earlier in my $PATH. - I rebooted off the new kernel and all looks good and a 'uname -a' confirms I am on the new kernel. I'm using shorewall to configure my firewall rules so it loads pretty much all the iptables/netfilter modules on start up. The module has loaded okay as far as I can tell: root@gecko:~# lsmod | grep p2p ipt_ipp2p 8256 0 x_tables 15236 43 xt_comment,xt_policy,xt_multiport,ipt_ULOG,ipt_TTL,ipt_ttl,ipt_TOS,ipt_tos,ipt_SAME,ipt_REJECT,ipt_REDIRECT,ipt_recent,ipt_owner,ipt_NETMAP,ipt_MASQUERADE,ipt_LOG,ipt_iprange,ipt_ipp2p,ipt_ECN,ipt_ecn,ipt_ah,ipt_addrtype,xt_tcpmss,xt_pkttype,xt_physdev,xt_NFQUEUE,xt_NFLOG,xt_MARK,xt_mark,xt_mac,xt_limit,xt_length,xt_helper,xt_hashlimit,xt_dccp,xt_conntrack,xt_CONNMARK,xt_connmark,xt_CLASSIFY,xt_tcpudp,xt_state,iptable_nat,ip_tables And the help for it works okay: root@gecko:~# iptables -m ipp2p --help iptables v1.3.8-20070925 <Snip removing regular iptables help items...> IPP2P v0.8.1_rc1 options: --ipp2p Grab all known p2p packets --edk [TCP&UDP] All known eDonkey/eMule/Overnet packets --dc [TCP] All known Direct Connect packets --kazaa [TCP&UDP] All known KaZaA packets --gnu [TCP&UDP] All known Gnutella packets --bit [TCP&UDP] All known BitTorrent packets --apple [TCP] All known AppleJuice packets --winmx [TCP] All known WinMX --soul [TCP] All known SoulSeek --ares [TCP] All known Ares EXPERIMENTAL protocols (please send feedback to: ipp2p@xxxxxxxxx) : --mute [TCP] All known Mute packets --waste [TCP] All known Waste packets --xdcc [TCP] All known XDCC packets (only xdcc login) DEBUG SUPPPORT, use only if you know why --debug Generate kernel debug output, THIS WILL SLOW DOWN THE FILTER Note that the follwing options will have the same meaning: '--ipp2p' is equal to '--edk --dc --kazaa --gnu --bit --apple --winmx --soul --ares' IPP2P was intended for TCP only. Due to increasing usage of UDP we needed to change this. You can now use -p udp to search UDP packets only or without -p switch to search UDP and TCP packets. See README included with this package for more details or visit http://www.ipp2p.org Examples: iptables -A FORWARD -m ipp2p --ipp2p -j MARK --set-mark 0x01 iptables -A FORWARD -p udp -m ipp2p --kazaa --bit -j DROP iptables -A FORWARD -p tcp -m ipp2p --edk --soul -j DROP When I created some shorewall tcrules for ipp2p a 'shorewall check' command shows a segmentation fault occurring and aborts reporting that I don't have IPP2P support. Delving further I found shorewall's test for ipp2p support in /usr/share/shorewall/lib.base where is it running the following command: $IPTABLES -A fooX1234 -p tcp -m ipp2p --ipp2p -j ACCEPT Note that I've correctly defined the $IPTABLES variable in the main config file to point to /usr/local/sbin/iptables instead of /sbin/iptables If I run the command directly myself I also get the segmentation fault: root@gecko:~# iptables -A fooX1234 -m ipp2p --ipp2p -j ACCEPT Segmentation fault This is despite the help for the module working as you can see above. Using /usr/local/sbin/iptables makes no difference, but a which command shows I'm running the correct version: root@gecko:~# which iptables /usr/local/sbin/iptables Any idea how I can track down what is wrong? Finally, just in case it helps anyone, here is the output from an strace: root@gecko:~# strace iptables -A fooX1234 -m ipp2p --ipp2p -j ACCEPT execve("/usr/local/sbin/iptables", ["iptables", "-A", "fooX1234", "-m", "ipp2p", "--ipp2p", "-j", "ACCEPT"], [/* 21 vars */]) = 0 brk(0) = 0x8055000 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f58000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=19567, ...}) = 0 mmap2(NULL, 19567, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f53000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/lib/i686/cmov/libdl.so.2", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\n\0\000"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0644, st_size=9684, ...}) = 0 mmap2(NULL, 12412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f4f000 mmap2(0xb7f51000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7f51000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/lib/i686/cmov/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260a\1"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1335720, ...}) = 0 mmap2(NULL, 1340944, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7e07000 mmap2(0xb7f49000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x142) = 0xb7f49000 mmap2(0xb7f4c000, 9744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f4c000 close(3) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7e06000 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e06ac0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 mprotect(0xb7f49000, 4096, PROT_READ) = 0 munmap(0xb7f53000, 19567) = 0 brk(0) = 0x8055000 brk(0x8076000) = 0x8076000 open("/usr/local/lib/iptables/libxt_ipp2p.so", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/iptables/libipt_ipp2p.so", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300\4\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=11602, ...}) = 0 mmap2(NULL, 11284, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f55000 mmap2(0xb7f57000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7f57000 close(3) = 0 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ Process 23813 detached I notice it is trying to open libxt_ipp2p.so in /urs/local/lib/iptables/ which failed... Is that something that should be on my system? Regards, -- ---------- Jim Barber DDI Health _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
