Configuring TACACS+ on Juniper SRX and Windows Active Directory

I’m sure someone has already documented this somewhere, but here are my usual breadcrumbs.  After pouring through Juniper’s thorough, yet scattered, documentation I finally got my SRX talking to Windows Ad via TACACS+.

I decided to go with TACACS.net, a free (not as in beer, though) command line oriented service that runs on Windows. It’s a very nice program and really cool that it can be downloaded for free. They charge for support, so I guess that’s how they keep the lights on. Read more

Changing the MAC address / network name in Ubuntu/Debian

This one always gets me. With Debian & Ubuntu  I can never remember the @^!*% file that lists the association between the MAC address and the interface name (eth0, eth1, etc.).  If there is only one NIC, then it’s not a big deal, but with my servers with multiple NICs then my OCD kicks in and I like to have my ports in a nice orderly fashion.  For example, if I have three NICs in a server where one is the going to be the primary NIC, and then the other two are for LACP for storage, etc. then I like to make eth0 my primary and eth1/2 my bonded interface. Read more

Wireless Mesh (almost there…)

OM1P wireless router

Overview

I’ve been testing a wireless mesh system for the past few weeks and thought I’d post my thoughts.  The system I’ve been testing is the Open-Mesh, and more specifically the OM1P which is a pretty slick little device.  For those unfamiliar with the Open-Mesh products, it is designed to be a plug-n-play “public” wi-fi setup, but with an extra twist – these things all talk to one another and create a wireless mesh which allows anyone to quickly setup wi-fi hotspots.  Read more

Automagic Bridged Networking Under *Ubuntu (and maybe Debian?)

I use Virtualbox for all of my virtual machining needs.  For some of my guest vms I like to use “host” networking, meaning that essentially the vm will share the hosts network adapter using a bridge and a TAP interface on the host computer to perform its virtual networking magic.  However, it can be a little more tricky to setup than using Virtualbox’s other type of networking, NAT.

However, with two packages “bridge-utils” and “uml-utilities” the chore of setting up a bridge interface on Ubuntu (and maybe even Debian) is almost pain free. Read more