Getting Started with the Cisco CSM
·4 min read
Cisco’s Content Switching Module (CSM) is an application accelerator. Or is it an application networking service module? I hate those fancy buzzwords – it’s a load balancer. …
Posts
Finding Hosts on Layer 2
·1 min read
Most firewalls should block [tag]ICMP[/tag] requests to them, so how do you know that your router or server has layer-2 connectivity to one? It’s pretty elementary, actually, but I’ve …
Filtering Outbound Traffic
·2 min read
I’ve seen a thousand [tag]firewalls[/tag] in my time, and nearly all of them are poorly configured. The biggest culprit? No [tag]outbound[/tag] [tag]filtering[/tag]. I guess a lot of people …
HSRP Interface Tracking
·2 min read
Remember the article on router-on-a-stick? And the one on HSRP? Let’s add to that example network, shall we? Let’s make those routers into edge routers so they connect your internal …
SNMP v3 is Easy!
·3 min read
I finally got around to looking into [tag]SNMP[/tag] v3 and was shocked at how easy it actually is. When I first looked up info on it so many moons ago, I saw table after tables of views and privilege …
Ideas That Seems Good At the Time
·2 min read
When I started in IT, I tried to get my gear as standardized as possible to impress everyone. I worked at it and worked at it until I realized that there were a handful of things that sound good but …
Setting Up SSH on IOS Devices
·5 min read
By default, most Cisco [tag]IOS[/tag] devices come configured to be accessed via telnet. This is probably fine for your house, but I really cringe when I run across corporate networks that use …
When Does a Tab Save You Money?
·2 min read
I was talking to some guys at work today about scalability and data efficiency, and an example came up that I had to think about for a second. One of the guys, a lead developer, started talking about …
Using a Linux Box as a File Server
·3 min read
Ever heard of Samba? You should. Samba is an open-source project “that provides seamless file and print services to SMB/CIFS clients.” That’s from the project’s website, but …
Make Your Own Ethernet Cables
·2 min read
If you need to buy an Ethernet cable, you’ll pay quite a premium for it at your local CompUSA or Circuit City. $22.99 for a 7’ Ethernet cable is terrible. For just a few dollars more, you …