https://community.extremenetworks.com/t5/extremeswitching-exos-switch/urpf-access-list-usage/m-p/31268#M5498 Create Date: Apr 1 2013 8:25PM<BR /> <BR /> I was wondering how the "urpf" keyword in the access-list syntax functioned - it would be a useful network hardening tool for me if I could filter out packets that didn't pass urpf at my network perimeter (as well as within certain networks inside) but it's a bit unclear how the urpf keyword works, what platforms it's available on, etc. I see it under "check policy attribute urpf" but the documentation has 0 mentions of it, so how would one go about writing an ACL using it? Extreme-specific definitions of the skip/loose/strict keywords would also be helpful. If there's another document with this info someone could point me to, that would also be super-helpful. Thanks! (from Ansley_Barnes) Wed, 08 Jan 2014 06:00:00 GMT EtherNation_Use 2014-01-08T06:00:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/urpf-access-list-usage/m-p/31268#M5498 Create Date: Apr 1 2013 8:25PM<BR /> <BR /> I was wondering how the "urpf" keyword in the access-list syntax functioned - it would be a useful network hardening tool for me if I could filter out packets that didn't pass urpf at my network perimeter (as well as within certain networks inside) but it's a bit unclear how the urpf keyword works, what platforms it's available on, etc. I see it under "check policy attribute urpf" but the documentation has 0 mentions of it, so how would one go about writing an ACL using it? Extreme-specific definitions of the skip/loose/strict keywords would also be helpful. If there's another document with this info someone could point me to, that would also be super-helpful. Thanks! (from Ansley_Barnes) Wed, 08 Jan 2014 06:00:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/urpf-access-list-usage/m-p/31268#M5498 EtherNation_Use 2014-01-08T06:00:00Z