Allow ESP traffic on IPCop/iptables?

I refer to the last couple of comments on this question:

How can I allow ESP traffic through an IPCop firewall?
And how do I make sure that UDP ports 450 and 5000 are allowed both ways (incoming is defined in port forward)?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Gabriel OrozcoSolution ArchitectCommented:
don't know ipcop but these are the iptables rules:

iptables -A FORWARD -p esp -j ACCEPT

iptables -A FORWARD -p udp --dport 450 -j ACCEPT
iptables -A FORWARD -p udp --dport 5000 -j ACCEPT

maybe you need to open INPUT if the server software is running on the same box as your linux firewall:
iptables -A INPUT -p esp -j ACCEPT

you only need to open the input rules when the final connection point is the same linux box. if traffic should pass across, then use the forward chain.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Linux Networking

From novice to tech pro — start learning today.