I recently had the need to upgrade the IOS on a Cisco switch (think it was a 3750). As usual, the flash was too small so I needed to remove (and archive/save) the old IOS before putting the new one on. A lot of the images these days include HTML and other things, so are
In my job I quite often find myself with a whole bunch of host names that I need IP’s for. I found it quite repetitive to keep opening a command prompt and typing “nslookup hostname”, then copying and pasting it somewhere. So I started googling. I have never used Powershell before, so this was a
A post on techexams.net recently made me look into parser views in more detail. I read the section in the CCNA: Security Official Certification Guide about them a while back (the entire one page of it), and never really gave it much thought, but I was prompted by the post on the forum to look into them
Now that ICMP traffic is fragmenting across the network, it’s time to change and start using TCP traffic. This is a follow on from MTU / Fragmentation / ACL Tests….Part 1 and I am aiming to find out what happens to fragmented packets when matched to static extended access lists. I’m going to use a program
There was a throwaway line in a book I was reading (the CCNA: Security Official Certification Guide), that said that a disadvantage of ACL’s is: Does not filter fragmented packets with the same accuracy as non fragmented packets. I have no idea why this is true, and after a post on techexams.net, I decided to just set