You will have to know what protocols and ports the application you want to
block uses. You may have a clue on that typing the commands below on the
global config mode:
Router-R1(config)#access-list 101 deny udp any any eq ?
Router-R1(config)#access-list 101 deny tcp any any eq ?
This will show you a help list with the most common UDP and TCP ports you
may use. For a comprehensive list search on Cisco's Website.
Regards,
Ednilson Rosa
----- Original Message -----
From: "shella kevin"
To:
Sent: Monday, August 27, 2001 8:04 AM
Subject: access-list & ports ( TCP /UDP) [7:17374]
when dealing with access-list we use both TCP & UDP. For example we use
tcp 53 or udp 53 for domain.
My Q is when & how we know when we should use UDP and when TCP .........
what is the difference .
Thanks
Shella K.
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