Setting up Zimbra for strong ciphers only

Tonight i was working on getting a client's Zimbra SSL configuration up to scratch, and found it somewhat difficult to get our server to make Qualys' SSL Labs scanner happy.  I was working from the following Zimbra wiki pages:...

Email message size limits

Background Prompted by a request from staff at a client's head office, a couple of days ago i posed this question to a couple of the mailing lists i'm on: what is your size limit on individual email messages? I was blown away by the speed,...

Three days with Junos

Background This post is the story of my first practical look at Junos on Juniper EX-series switches. One day last December, Skeeve Stevens from eintellego opened a can of worms by offering a deal on Juniper equipment to all network engineers on...

Quick tip on using Vyatta vbash

I've been doing a lot of work with Vyatta of late, and one of the great things about having a router based on Debian is that you can combine Cisco-/Juniper-style CLI with Linux goodies.  One of my favourite Linux utilities is watch, which just...

BackupPC incorrect 'no ping response' error message

I discovered a bug with BackupPC's error reporting.  This has hit me more than once (evidenced by the deja vu I experienced when debugging the problem), but I mustn't have written down the solution previously.  A quick Google (by which I mean...

What's in my podcast roll

I've always been interested in learning and developing my skills, and over the past couple of years i've been increasingly targeting my professional development.  On a long commute, a great way to explore different areas of interest is listening...

Fun with Linux server migrations, part 2

Seeing progress of a long-running Linux process During the server migration mentioned in part 1, i wanted to see what a long-running rsync process was doing.  Because we had done several presyncs of the data before the outage window, there was...

Fun with Linux server migrations, part 1

Server migrations with file system structure changes Last night i completed a P2V migration of a 2 TB Linux file server.  It was running on an old IBM x306 server with cheap SATA disks, and we were migrating it to a VMware environment with a...

Ridiculously obvious shell function for Quagga users

The response to my recent tweet about trying to run Cisco commands on Linux got me thinking: why shouldn't i be able to type show run on my Linux routers?  For those of us who switch between Linux & Cisco (and possibly others) a lot and use the...