TPROXY module

I'm having trouble running iptables using RHEL 6.3.

iptables -A INPUT -p tcp --dport 1234 -j DROP iptables v1.4.7: can't initialize iptables table `filter': Table does not exist (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded.

Heres my version of RHEL.

cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.3 (Santiago)

And the kernal version.

una

fukawi2 wrote:Do your ip6tables rules allow forwarding?

I have inherited a custom built Linux kernel 2.6.30.9 and am just upgrading the underlying OS from RHEL 5.4 to 5.8 (kernels 2.6.18.164 and 2.6.18.308 respectively).

When booting, the following is displayed:

unloading iptables modules [ OK ] Applying iptables firewall rules: modprobe: FATAL: module ip-tables not found.

iptables-restore v1.3.5: iptables-restore unable to init

hi , i followed the articale about operating squid as tproxy mode , i mean that the client ips go to internet with thier real ips .my question is ,does centos 2.6 ker... [by squidcentos]

Possible Duplicate: iptables: forward port 80 to port 8080

I'd like to forward port 80 to 8080. So I tried to edit /etc/syscongfig/iptables:

-A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8080

But got:

# service iptables restart iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK

My Host Lists of Ettercap is empty when I try to sniff my Lan.

I use MAC address filtering on my Linux router. Here is what I have done:

iptables -A INPUT -i eth5 -m mac --mac-source 00:07:e9:84:2b:99 -j RETURN #User: Someuser iptables -A INPUT -i eth5 -j DROP

But the Iptables rule list is huge with more than 400 entries. Recently I read about the advantages of using Ipset with Iptables here.

In a RHEL training document, the author says:

...run the following command to disable the firewall on the current system: iptables -F

He explicitly uses the word "disable" which to me suggests that it will be simple to re-enable. In reading the man page though for iptables, I see this:

Flush the selected chain (all the chains in the table if none is given).

I want to allow user to check how many rules are present in filter table, but not able to view actual rules, is that possible?

literally I mean iptables -L | wc -l (I know it's faulty), but sudo doesn't seem to support pipe commands like that, I mean, currently If I wanted to allow that, I need to grant permission to run iptables -L instead of iptables -L | wc -l

Any thoughts?