You probably know this one already, but I have been typing ìwr tî for a long time and never stopped to look. Puts a line number at the side of the config so you can say to the person on the other end of the phone, see line 10………. r2#sh run linenum Building configuration… Current [...]
One of my favourite default commands on IOS is “ip tcp synwait 5″. Lets look into this command and why you might like to use it as well.
All these years, and I didn’t realise the opposite of the enable, was disable.
Following my original post about configuring Reverse SSH on a Cisco console server, I wanted to make some followup to extend the usage.
A number of Cisco Bloggers have talked about making labs available for others to use. However, part of what will be needed is some conventions to make these labs work for the largest number of people. Following Ivan Pepelnjak posting on Private Domain Names, and an earlier posting that I made on Reserved IP Address [...]
I recently needed to secure the reverse console access using Cisco IOS router. Now for many years, we have been doing this over telnet and the configuration has been straightforward. But configuring it to support SSH instead of telnet is a little bit different, awkward in fact.
ip tcp timestamp I have seen this command a few times, today I am going to look into it and see what it does. Also, this is probably a classic CCIE lab gotcha.
I have been working on a VPN setup that loads the Group Policy from a CiscoSecure ACS server. During the process I discovered the test aaa-server command. Its very handy tool when you are doing this kind of stuff.