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November 2008 - Posts

Thursday, November 27, 2008 12:08 AM

Cisco IOS ACL ObjectGroups

Hey guys, IOS release 12.4(20)T provides just the tool you need: the ACL object groups. you can define a group of host addresses and use them as an object in ACL: object-group network SMTP_Server description ISP SMTP server host 1.1.1.1 host 1.1.1.2 !
Posted by jahil | 2 Comments
Wednesday, November 26, 2008 11:55 PM

Using DNS Name in Cisco Access-lists

When you configure an access list that should prevent spammers from misusing your network, You obviously had to figure out the IP address of the ISP’s SMTP server (access lists and object groups accept IP addresses). You can enter a hostname in an IOS
Posted by jahil | 0 Comments
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Saturday, November 15, 2008 6:22 PM

How NBAR actually classifies the traffic flows?

I still love Cisco. My one true love. It hurts with you :) Anyways lets start with Layer 7 traffic filtring on Cisco router. NBAR protocol classification feature has long supported enhanced HTTP URL matching features. However, Cisco documentation site
Posted by jahil | 0 Comments
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