Cisco switches posibilities

[paul00]

Hello friends ,

It is possibly to deny TCP port
or udp port to block virus spread
entire network or UDP port on Cisco 2950
or 3550 catalyst switches

thank you

 

[Nettekkie1010]

Switches are layer 2 devices, TCP/UDP are layer 3; this type of filter must be applied to a router. Even higher-end switches like the 6500 series must have a route processor to do this type of filtering.

Haveagoodun!
Nettekkie1010

 

[paul00]

Thank you
I have two 3550 switch-routers too
they made bacbone .They are 3 layer switches.
Can I block ports ?I learn that I can
create Access Lists and deny TCP port
and udp
that is right ?

 

[Nettekkie1010]

You can do anything you wish with extended accesss-lists (100-199). Please, visit this link to find all information you will need.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur_c/ftrafwl/index.htm

Haveagoodun!
Nettekkie1010