• ASA - Security

    Traffic filtering on Lan-2-Lan VPNs (ASA)

    So I know this isn’t my usual R&S blog post… but I continue to see just terribly stupid approaches to filtering traffic across Lan-2-Lan tunnels between ASAs. So this is my small contribution to end the stupidity. Before we get started, lets draw up a super basic diagram to work…

  • Enterprise - General

    GNS3 IOU Server (GNS3 1.0 Beta 2)

    Just thought I’d share this video out from my YouTube channel here also. So the two people who mistakenly read my blog this week can see how this is done. GNS3 IOU Server L2 Image I use — i86bi-linux-l2-ipbasek9-15.1e.bin L3 Image I use — i86bi-linux-l3-adventerprisek9-15.3.1.3T.bin ================================================ Modify this conf file…

  • Enterprise

    DMVPN – Part 2, BGP with dyanmic neighbors

    Oh man… BGP Dynamic Neighbors. This is a freaking cool way of setting up BGP on a device like a Hub router where you’re expecting numerous BGP neighbors. Before dynamic neighbors, I remember configuring my hub router with peer-groups and having an insane amount of syntax since we had ~30-40…

  • Enterprise

    DMVPN — Spoke-to-Spoke Multicast (but why?!)

    So now that I’ll off my on-call rotation, I’m getting back to studying. I needed something to fire me, so I started watching DMVPN videos from Cisco Live! 2014. One thing that really sparked my interest was spoke-to-spoke multicast communication. I’ll lead by saying this… not a production solution I’d…

  • Enterprise

    CCIEv5’s DMVPN

    First off, fear not. I’ve already recorded videos from DMVPN part 2, I didn’t give up lol. I just need to get some time to toss everything into text format. I just thought I’d do a really short post about DMVPN on the new blueprint. I haven’t tested yet, however from…