My ongoing iptables problem...

[Jeremy Fowler]

Flush all the tables:
iptables -F
iptables -t nat -F
iptables -t mangle -F

Then delete all rules:
iptables -X
iptables -t nat -X
iptables -t mangle -X

Then set default polices to accept:
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT

Then try to connect.

Are you using a 3rd party utility to configure the firewall or hand editing an
rc script?

> -----Original Message-----
> From: owner-kclug at marauder.illiana.net
> [mailto:owner-kclug at marauder.illiana.net]On Behalf Of jose sanchez
> Sent: Thursday, July 18, 2002 5:36 PM
> To: kclug at kclug.org
> Subject: My ongoing iptables problem...
>
>
>
> I don't know what else to try. I still can't get my
> Linux "router" route/forward an http request from two
> different networks. I can ping and traceroute from one
> to the other but that's it. I can't do anything else.
>
> Today I tried connecting the router to the internet
> and see if I can ping to the outside from one of the
> networks but I couldn't I get host unreachable error.
> I can ping and traceroute from the router to anywhere
> with no problem. I even disabled iptables (service
> iptables stop). Still can't access the outside from
> the LAN. The weird thing is that I can ping to the
> outside NIC from anywhere in the LAN but can't get
> passed that.
>
> I have all the systems in the LAN with a gateway
> address 192.168.1.1 (the router's LAN interface).
> IP_FORWARD is enabled, no iptables/ipchains rules are
> running. The router is open and accepting everything
> in the INPUT, OUTPUT, FORWARD.
>
> The only thing I haven't done is recompile the kernel.
> I'm running kernel 2.4.7-10 w/ a freshly installed Red
> Hat 7.2 distro, enough memory (128Mb), don't know what
> other info I can give you.
>
> Please help.
>
> I promise this will be the last posting regarding this
> problem. I just don't know what else to do.
>
> Thanks in advance for all your help.
>
>
>
> =====
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> - Anonymous
>
>
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