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You are talking about IPUnknownProtocol, right? ARP can't be filtered, because it is not an IP protocol. The rest of those you mentioned can, just go to IPUnknownProtocol advanced option, and seperate the protocol numbers by commas. I hope this helps. -----Original Message----- From: NGHE/NG, K.M. HENRY (IT-ISD-OOCL/HKG) [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 18, 2001 11:38 PM To: [EMAIL PROTECTED] Subject: How to filter out protocols other than ICMP/TCP/UDP? TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of your message to [EMAIL PROTECTED] Contact [EMAIL PROTECTED] for help with any problems! ---------------------------------------------------------------------------- Hi The filter function allows us to filter out some traffic in the network in the form of TCP(6), UDP(17) and ICMP(1) only. If I want to filter protocols like ARP(255) , IGP(9), GRE(47), ESP(50) etc from normal sources in the network, say the routers or VPN gateway, how can I do that? Regards, Henry Ng
