Hello.
I have problems with connlimit module. I've got properly configured,
patched and compiled kernel 2.6.21.5 and iptables 1.3.8.
patch-o-matic-ng-20070713 was used.
The module ipt_connlimit is loaded properly, but iptables still can't
create any rules with it.
# modprobe ipt_connlimit
# lsmod | grep connlimit
ipt_connlimit 4352 0
nf_conntrack 59656 5
iptable_nat,nf_nat,xt_state,ipt_connlimit,nf_conntrack_ipv4
x_tables 15620 10
ipt_set,xt_tcpudp,iptable_nat,xt_pkttype,xt_state,xt_multiport,
xt_limit,ipt_REJECT,ipt_connlimit,ip_tables
# iptables -A FORWARD -i eth1 -p tcp --syn \
-m connlimit --connlimit-above 64 -j DROP
iptables: No chain/target/match by that name
Some output from "strace iptables ...":
open("/usr/local/lib/iptables/libipt_connlimit.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\260\5\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=7722, ...}) = 0
mmap2(NULL, 7412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
= 0x40019000
mmap2(0x4001a000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x4001a000
close(3) = 0
open("/usr/local/lib/iptables/libipt_standard.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\240\4\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=6355, ...}) = 0
mmap2(NULL, 6260, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
= 0x4001b000
mmap2(0x4001c000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x4001c000
close(3) = 0
socket(PF_INET, SOCK_RAW, IPPROTO_RAW) = 3
getsockopt(3, SOL_IP, 0x40 /* IP_??? */,
"filter\0\300\3\0\0\0\225\r\346\7\n\0\376d\n\0\376\5\0\0"..., [84]) = 0
getsockopt(3, SOL_IP, 0x41 /* IP_??? */,
"filter\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., [10480]) = 0
setsockopt(3, SOL_IP, 0x40 /* IP_??? */,
"filter\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 10732) = -1
ENOENT (No such file or directory)
write(2, "iptables: No chain/target/match "..., 45iptables: No
chain/target/match by that name
) = 45
exit_group(1) = ?
Process 20418 detached
