Block UDP on Port 514

I am responsible for a Cisco router 7200 and we need to block UDP on port 514 on the ISP connection. I kind of have an idea with the access list, but I am not very sure how to do this.

Any help would be appericated. If you can send me and article or manual explaining the process.

Thanks for your help....Gordon

Reply to
gchan5
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access-list read-the manual-or-stop-IT deny udp (who you do not like) (mask you hate) (what you 'd like to keep safe) (netmask you've got your precious thing) eq 514 access-list read-the manual-or-stop-IT permit ip any any

then, an daqccess-group in the interface guilty to let the bad traff going through.

So, this is for PIX. On a router, you've got to kinda revert the netmask.

RTFM

AA

Reply to
AAA

more positive :

formatting link
Regards, Luc

Reply to
Luc

Luc,

I would like to thank you, this article helped me very much!

Gordon

Reply to
gchan5

That's the strangest reply I've ever seen!

Reply to
Chris

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