Ssh on the bin

Dell Powerconnect 6200: Enable SSH and Disable Telnet

Mon, 08 Jul 2013 00:00:00 +0000

Most modern switches include the ability to use SSH as a remote communications protocol. Here we will enable that functionality and disable telnet on the Dell Powerconnect 6248 switches.

Enable SSH

In order to enable SSH we need to generate the keys which will be used by SSH to encrypt the traffic.

 text
 
 
console>enable
console# configure
(config)# crypto key generate rsa
(config)# crypto key generate dsa
(config)# ip ssh server
(config)# exit
console# copy running-config startup-config

Disable Telnet

Depending on your config you might not need to disable this, but if it is enabled you should disable it.

Securing SSH with Publicly Accessible Servers

Thu, 16 Feb 2012 00:00:00 +0000

Just about every IT environment has some sort of remotely managed environment which requires that they have SSH open to the Internet. Perhaps this is a VPS, dedicated server, or colocation. Regardless of your reason, the fact is that there is just some times where you need to have SSH open to the internet.

However regardless of if it is necessary doesn’t mean that you should just do it… One look at your auth.log will reveal that.

Bash: Using Temporary SSH Keys Within A Script

Wed, 10 Aug 2011 00:00:00 +0000

Every once and a while you will have the need to make multiple ssh calls to remote systems within a bash script. Normally you would simply have the user enter their password multiple times, or have a requirement for SSH keys to be configured prior to running the keys. This is widely accepted as the way to do it, however if that were the best way to do it, then I would not be writing this article. Now the better way to do it would be to create ssh keys, and upload them as authorized keys to the remote host(s) then upon completion of the work we can then clean up the changes that we made.

Linux-KVM: Managing KVM Guests Using Virt-Manager on Windows

Mon, 21 Mar 2011 00:00:00 +0000

When I first started using KVM, I was quite disappointed with the graphical management abilities of KVM. Basically if you want to manage via the command line KVM is a fantasical dream world where anything is possible and it is all “musical sunshine” and “double rainbows” but if you want the ability to manage graphically it was a world which was very one sided in that if you wanted the ability to graphically manage your VMs then you had to use Linux. Or so I thought…