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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?
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ryan_cwl
Asked:
ryan_cwl
1 Solution
 
Yan_westCommented:
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.
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wingateslCommented:
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.
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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?

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Yan_westCommented:
Here is a very complete listing of port numbers, and the application they are associated with.

http://www.iana.org/assignments/port-numbers
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jabiiiCommented:
becareful not to lock yourself out :)
but as everyone already said deny all by default, permit by exception is the best rule of thumb.
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ryan_cwlAuthor Commented:
thanks guy for all the feedback given
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Yan_westCommented:
Please accept the solution :) give us our points! :)
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