Latest Posts

Resetting Sections of the Config

·1 min read

I was configuring a switch the other day and realized I had configured a trunk on the wrong port. God, I hate that. Instead of dumping the configuration for the port and doing a “no” on …

AFOL-KE and Above.net

·1 min read

It looks like there was another bad BGP announcement over the weekend. This time, a 24-bit network belonging to the country of Kenya was being advertised by Above.net. The heart of the problem is the …

NAT on a PIX/ASA

·3 min read

NATting sucks and can be confusing. I’m sure everyone agrees to that, but you have to use it at some times. In a PIX/ASA, it’s easy to configure a simple setup, but can be …

aclasafirewallnatpix

Commenting Access-lists

·2 min read

There’s a very-overlooked feature of access-lists – the remark. Yes, this is very basic, but it’s worth mentioning, as it has saved me anguish time and time again. I use remarks to …

aclsasafirewallpix

Wireless Headsets

·2 min read

We all have these at our desks. Not the bluetooth guys for your [tag]phone[/tag] (we could talk about that for a while), but the 900MHz headsets that your company gave you for those long and annoying …

Basic Logging on an IOS Device

·3 min read

I’ve been looking around at some lists and forums for technical help on Cisco gear, and one thing keeps coming up – people new to [tag]Cisco[/tag] devices don’t know how to look at …

Pakistan and YouTube -- What Happened?

·2 min read

BGP has issues; the main one being transitive [tag]trust[/tag]. [tag]BGP[/tag] works by having networks (companies, providers, etc.) advertise [tag]routes[/tag] that it owns to its peers. These peers …

Remembering the Little Things

·2 min read

Back in the day, when I used to put a new piece of IOS-based gear on the network, I would have to go through the gear already in production to remember what all those “little …