Someone setup an access list for VPN but cocked up the subnet, so I've been asked to fix it. Easy enough I thought, but I can't seem to get the command right. I thought you'd log in, switch to config ...

When working with the Cisco IOS, it’s very important to know your TCP and UDP port numbers. This is especially true when creating IOS access control lists (ACLs). Let’s take a closer look. What’s a ...