Cisco IOS ACL logging with Port numbers

Cisco IOS logging with source and destination ports Recently I had to do some troubleshooting on a Cisco 2911 Router in order to find out if traffic is going from a certain IP address to another. So I did the usual created an extended Access List and then applied it to the interface like this:… Continue Reading Cisco IOS ACL logging with Port numbers

Adding/Configuring a Failover Cisco ASA

These are few notes basically outlining procedures on how to add/configure a Cisco ASA Firewall Failover. There are multiple ways to accomplish this. What I am writing here relates to, Cisco ASA 5520 being used for webvpn, running 8.2(4). Lets say you have two interfaces configured on your Cisco ASA 5520 IP of gi0/0 = 192.168.1.1/24 IP of gi0/1 =… Continue Reading Adding/Configuring a Failover Cisco ASA

ASA 8.4 NAT with specific ports

Cisco ASA NAT specific ports TCP/UDP Version 8.4 So we all are pretty much used to the new Cisco ASA 8.3+ NAT, Auto NAT and Twice NAT. I am writing this article on, “how to NAT single or multiple specific ports to a single Public IP address”. When and why would you want to do this? Well some… Continue Reading ASA 8.4 NAT with specific ports

Cisco ASA Policy Based Static Source NAT

Setting up VPN Connectivity between multiple locations is a pretty common task these days. It is a very simple and straight forward setup unless NAT comes into the play, there are multiple offices with overlapping subnets etc. Usually in that scenario solution is simple both sides will perform NAT and present their internal network as something else to the other… Continue Reading Cisco ASA Policy Based Static Source NAT

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