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denying attacking IP on PIX

edgrant
Community Member

can someone please confirm or correct me on this. i have an IP addy that has been scanning my network off/on for a few hours. i have already contacted the administrator for this IP's network(a college campus) via email and left him a voicemail, but have not heard back yet. i want to completely deny this IP until i have spoken with this admin and addressed this issue. i am not positive that i am entering the correct command, so if someone could confirm the command i would appreciate it. TIA

access-list 110 deny tcp host x.x.x.x any

2 Replies 2

steve.barlow
Level 10
Level 10

Use IP, not just tcp: "access-list 110 deny ip host x.x.x.x any"

Also look into the "shun" command: http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_62/cmdref/s.htm#xtocid20 .

Use the "icmp" command if you want your PIX to not be pinged (can block all icmp as well) any more as well: http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_62/cmdref/gl.htm#xtocid5 .

Hope it helps.

Steve

nnorthedge
Community Member

For the access list you may want to deny ip, instead of just tcp. You'll also need to apply the access list to the interface:

access-group 110 in interface outside

You can only have one access list applied to an interface at a time, so if you already have one on the outside interface, you'll have to combine the two.

Norman

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