Archives

  • Release of aslookup

    Recently I have been hacking away at some C code, I had wanted to create a tool to lookup Border Gateway Protocol (BGP) Autonomous System (AS) numbers from the command line with ease. I had some time, so I decided to code a little. I was able to create this tool for performing BGP AS Number […]

    Dec 14th, 2016 • Filed under Bash, Linux, Networking, Routing, TroubleshootingPrint View
  • Cisco ASA to Play Nice with Asymmetric Routing

    Some day you might find yourself in a situation where you have an ASA device protecting an asymmetric network. This is a problem for ASA as it can only see one half of the connection, the other half being routed to the destination through a path that doesn’t involve the ASA. Now, this is not a […]

    Jul 9th, 2011 • Filed under ASA, RoutingPrint View
  • Order of NAT Processing

    Just a quick post about NAT processing when it comes to the Cisco ASA platform. When configuring different types of NAT (NAT Exemption, Policy NAT) there can be some overlap. The Cisco ASA will run through the NAT translation types configured on the firewall, until the first match is found. Here is the list in […]

    May 22nd, 2011 • Filed under ASA, NAT, Routing, TroubleshootingPrint View
  • Verifying NAT-Control

    NAT control you say? What is this crazy feature and why does it control NAT? NAT control is a feature in which requires a NAT rule before traffic is permit by the ASA, it has to create a NAT translation, if there isn’t a matching translation rule it will drop the packet. NAT control was […]

    Dec 3rd, 2010 • Filed under ASA, NAT, RoutingPrint View
Archive for the ‘Networking’ Category