Networking • Automation • Occasional Podcasting
Inside Greg’s Brain

Networking gear, Ansible playbooks, and a podcast on the side.

Mikrotik tutorials, Ansible Automation Platform deep-dives, and conversations that chase the story behind the person.

Latest posts

  • Mikrotik Bridging Networks With Full Duplex Wireless Links

    Mikrotik Bridging Networks With Full Duplex Wireless Links

    The other day I had a question…”How can I bridge two networks using full duplex wireless links?” Another stipulation was to also use OSPF. Here’s our diagram: What we want to accomplish is this: Full duplex wireless link Have the same L2 subnet stretched across the devices Have auto link failure recover Step one is…

  • Mikrotik Changelog V4.15

    It looks like 4.14 introduced a nice little RB1000 bug and has subsequently been replaced by 4.15. If you have 4.14, I would go ahead and delete it just for safety’s sake. *) upgraded broken RB1000 bootloader which was included with v4.14;

  • Mikrotik V4.14 Released

    Torrent can be found here. Looks like they dropped a quick release to fix a couple of Nv2 issues. *) radius – fixed Disconnect and CoA response signature generation; *) radius – do not include NAS-Identifier & NAS-IP-Address in Disconnect and CoA responses; *) added hotspot html variable “host-ip”; => I can’t find anything on…

  • Cisco Communications Manager Express – Call Forward All

    We were recently shutting down an office and needed to forward all calls back out to another office temporarily. What I did was create a fake phone, set it to call forward all and then have all incoming pots lines go to the fake phone. Here’s the setup for the fake phone: ephone-dn 60 number…

  • ,

    Show ASA Config PreHash

    My boy Yeager posted this up ages ago. It basically allows you to show the running config and read the group-policy shared keys. I found with the newest versions you need to run the command like so: more system:running

  • Mikrotik Newsletter 29

    The PDF can be found here. PCQ Rewrite: Bursting added IPV6 support Address masks for src and dst I’m trying to think of how the masks would be useful. I can envision connections to a group of web servers all sharing a rate limit. Though you could just do that with a mangle rule. SwOS…

  • Terrain Profiler

    Terrain Profiler

    Here’s a cool little terrain profiler. You set a couple of points on google earth and it will give you the terrain profile inbetween.