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Tag Archives: filtering

[CCIELab] Output manipulation in Cisco IOS

[Originally posted on ccielab.ro] Unlike Linux’s iptables, Cisco’s filtering via Access Control Lists sometimes has hidden behavior. Let us test how ACL filtering works using the following topology. We assume that we have Layer 3 connectivity via static routes. We will apply ACLs on the outbound direction of F1/0 on R2 (we want it to […]