Hi all

I create simple firewall for Etch.
Kernel 2.6.22.5
Iptables 1.3.6
After that rule :
iptables -A INPUT -p tcp -i eth0 -m state --state ESTABLISHED -j ACCEPT
I'v get this error:
"No chain/target/match by that name"

And:

iptables -t filter -A INPUT -p tcp -i eth0 -m state --state ESTABLISHED -j ACCEPT

"No chain/target/match by that name"


lsmod:
ipt_recent
iptable_filter
ip_tables
x_tables

demseg | tail -f :
eth0: no IPv6 routers present
ip_tables: (C) 2000-2006 Netfilter Core Team

What can I do with it???
Best regards
GGery

you don't need to specify a protocol; drop the "-p tcp"

then anything you permit via other rules (eg, the first tcp/80 packet to a web server, an icmp type 8[echo], a udp/53 packet to a dns server) will have it's established traffic the other way allowed.

-c

Hello

Sorry, same error
This is clean Debian net install and I compile kernel from default config.

debian:~# iptables -A INPUT -p tcp -i eth0 -m state --state ESTABLISHED -j ACCEPT
iptables: No chain/target/match by that name
debian:~# iptables -A INPUT -i eth0 -m state --state ESTABLISHED -j ACCEPT
iptables: No chain/target/match by that name

I don't know maybe it's module problem ?

BR

what do you get from "iptables -L"?
-c

I just start configure my firewall.

This is 3 rule from my script:

iptables -F -t filter
iptables -F -t mangle
iptables -A INPUT -p tcp -i eth0 -m state --state ESTABLISHED -j ACCEPT

iptables -L -n:

Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination


Maybe I must first DROP all but I want to restart firewall from SSH.
GG

Iptables misses the state module. It complains about "-m state". The module you are missing is ipt_state.

You may try to modprobe ipt_state, but if that module isn't there you might have to re-install iptables with the correct modules. Honestly I never had this problem with Debian, so I can't tell you what to do if it is missing.

jlinkels

Thanks jlinkels

I have this error:
FATAL: Module ipt_state not found.

I must reconfigure this packages form dpkg or from source?
GG

I take it /lib/iptables/libipt_state.so is not available on your system.

NO idea how to get it there. I compiled my own kernel as well, but I did not add/remove anything in the NETFILTER section. It just worked right.

AFAIK installing iptables only installs the user land part of iptables, the real thing runs in the kernel and during kernel compilation the module should have been compiled.

What if you install a pre-compiled Etch kernel 2.6.18?

jlinkels

With default kernel from netinstall 4.0rc1 CD every think is OK.
ipt_state loaded with ip_conntrack.

I’ve compiled this morning kernel 2.6.22.6 with patch-o-matic-ng and iptables source 1.3.8
But this not working. I use default .config from boot.

GG