HowTo Configure 802.1Q Tagging on a Cisco Router

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Sep 302008
 

There may be a time when you need to configure 802.1Q Tagging on a router’s FastEthernet Interface.

One potential situation is when you have a switch that doesn’t have Layer-3 capabilities connected to the router, but you have to segment the hosts connected to the switch into seperate networks. Why? Maybe you have a segments you want to prevent from speaking to each other – you can apply access-lists to the subinterfaces (hint) just as you can a normally configured physical interface.

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Using NMAP to find Network Device Types

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Sep 262008
 

This time around we’re  going to use NMAP for more than just a basic scan. I really like this tool with all it’s switches.

So anyway to find a network device just use nmap with the "-O" switch (that’s a capital letter O, for OS detection).

Here’s and example where I used this command to determine that a host was a Nortel switch:

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ZFS HowTO, HowTo Create a ZFS File System

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Sep 242008
 

Here is another HowTo, but this time its on ZFS. The ZFS file system is a revolutionary new file system that was developed by SUN. I have to say ZFS is awesome and very easy to administer, I’ve been pissed off lately with things that I can not do on OpenSolaris/SolarisExpress or things that take way to much time to do on Solaris. One thing that has been extremely easy to implement and administer has been ZFS.

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HowTo Remaster a LiveCD or LiveDVD using SLAX

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Sep 162008
 

The other day I had to come up with a way to transfer a Solaris Express nv97 DVD 3G image to remote locations while not using the network. The reason for this is, I needed to perform a LiveUpgrade on over 700 boxes and each being at a different locations. So I said to myself I guess I can put this image on a custom LiveDVD… But then I said to myself, which Linux LiveCD/DVD distro will I use???? It has to be small enough so that I can fit the Solaris Express nv97 image as well as the LiveCD Image.

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