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

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    Mikrotik Border Router Firewall Script

    Here’s an older version of my firewall script that I’m making public. This is compiled from some wiki/forum/personal experience. It blocks spoofed traffic inbound, has some portknock rules included, SMTP spam blocking, some ICMP rate-limiting, blocks some port scans and DOS attacks. In the below script replace X.X.X.X, Y.Y.Y.Y, and Z.Z.Z.Z with your own values.…

  • Speaking Of Baboons…

    Speaking Of Baboons…

    I’ve made a new a new friend in South Africa named Wiehan. He could relate to the baboon issues…so much so that he shared some of his pictures with me 🙂 Click the pictures to enlarge! Razor wire and spikes! I should think this would do the trick for the curios passerby also…hehehe. Thanks for…

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    Tilera / Mikrotik Press Release

    Thanks to Andrew, this is old news…how he finds all this stuff I’ll never know 😉 EDIT, thanks for the proper link Normands! It appears as if there is an official press release from Tilera talking about how the Mikrotik CCR is using their 36 core chips. They confirm a couple of things: Mikrotik is…

  • Mikrotik V5.19

    What’s new in 5.19 (2012-Jul-16 10:51): *) ssh – added /ip ssh regenerate-host-key which will regenerate current host key; *) dhcpv6 client – fix multiple advertise handling; *) snmp – fix v3 engineID discovery; *) fix ticking sound on RB411UAHL; *) user manager – fixed byte to KiB, MiB and GiB conversion (digit after decimal…

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    Command-Line Permissions Windows 2003

    I found the CACLS command: CACLS filename [/T] [/E] [/C] [/G user:perm] [/R user […]] [/P user:perm […]] [/D user […]] filename Displays ACLs. /T Changes ACLs of specified files in the current directory and all subdirectories. /E Edit ACL instead of replacing it. /C Continue on access denied errors. /G user:perm Grant specified user…

  • TheBrothersWISP Podcast 6 – Toughswitch mFi RB2011LS-IN

    TheBrothersWISP Podcast 6 – Toughswitch mFi RB2011LS-IN

    We have the whole crew on deck again. We talk mostly about hardware in this one including: Toughswitch Ubiquiti mFi My ramblings about mFi Mikrotik RB2011LS-IN My ramblings Andrew digging up some hardware info on Mikrotik 10Gb Google glass (Glasses we were talking about with skydivers) SPIRAL CUT HOTDOOOOOOOOOGS! FIND THE VIDEO AND AUDIO HERE…

  • What Could Be More Simple Than Replacing A 6509 Supervisor…?
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    What Could Be More Simple Than Replacing A 6509 Supervisor…?

    Noting…unless of course you are me 🙂 Here’s the situation. We are doing user aggregation on a 6509 chassis. Due to cost considerations, we only put a single Sup in. We had a power supply failure which subsiquently killed the super…don’t ask me how, but it did. I quickly threw in a redundant sup720 I…