access list

dear all,

I'm consolidating a list of malicious port number for router, any experts out there can give advise or rather any url which I can check out?
Who is Participating?
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.

The best advice I could give you is to shut off EVERYTHING, and then open the needed port one by one... You would start by opening port 80, and after, you look at your firewall log file to see what gets blocked. You adjust your rule according to this after.

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
I would agree with Yan, EVERY PORT IS A MALICIOUS PORT. only open what you need to who you need. the router will deny the traffic by default if it is configured as a firewall.
ryan_cwlAuthor Commented:
Thanks for the feedback, but do you have any standard access list which I can take reference to or any good url to check on all the ports?

Top Threats of Q1 & How to Defend Against Them

WEBINAR: Join WatchGuard CTO and our Threat Research Team on Aug. 2nd to hear the findings from our Q1 Internet Security Report! Learn more about the top threats detected in the first quarter and how you can defend your business against them!

Here is a very complete listing of port numbers, and the application they are associated with.
becareful not to lock yourself out :)
but as everyone already said deny all by default, permit by exception is the best rule of thumb.
ryan_cwlAuthor Commented:
thanks guy for all the feedback given
Please accept the solution :) give us our points! :)
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
Software Firewalls

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.