Doubts with uRPF

Hi,

Can somebody explain better spoofing with uRPF?

Let me see if I understood:

! access-list to permit one network spoofing and log any other violation
network Access-list 100 permit ip 10.10.10.0 0.0.0.255 Access-list 100 deny
ip any any log

! applying in upstream link
Interface S0/0
Ip verify unicast source reachable-via any 100

! applying uRPF to internal interface
Interface e0/0
Ip verify unicast source reachable-via rx 100

Thanks
Gudines

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Received on Mon Jun 22 2009 - 22:19:50 ART