port security help

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Regarding TCP.IP ports. what ports should i disable and what ports
should i keep open on a cisco router within my network.


Re: port security help
On 31 Aug, 22:39, 93RX...@gmail.com wrote:
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Hi,

Nobody can tell you the answer to that question.  What would you want
to go in/out of your network?

i would start with

www
pop3
dns
smtp
any bespoke apps you have

not sure if you need

ntp
snmp
any routing protcols


I would block everything else and then begin permitting in/out as and
when people complain
they can't access various services.

Paul
www.howtonetwork.net


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