By default the Cisco ASAv has weak ssh config that many modern OS's do not support. ssh admin@10.1.10.56 Unable to negotiate with 10.1.10.56 port 22: no matching host key type found. Their offer: ssh-rsa This error is from the client side ssh client refusing to use any of the host key algorithms that are offered … Continue reading Fixing Weak SSH Ciphers On a Cisco ASAv
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RHEL 7 Two-Factor SSH Via Google Authenticator
In this post, I am going to walk you through the process of installing and configuring two- factor SSH authentication via Google Authenticator. My base system is running a fresh install of RHEL 7.2 Installation Steps The first step on my system was to install autoreconf, automake, and libtool. These packages are required by the bootstrap.sh script that … Continue reading RHEL 7 Two-Factor SSH Via Google Authenticator
Yum: Under the Covers with GPG Keys
Hey look at this spooky key. Don't be frightened little one. Nothing scary is going to happen to you here. This is a safe place. As a matter of fact, if you stick around you might just learn a thing or two. A thing or two about GPG!
First off do any of us really know what GPG stands for? Well yes we do! It stands for GNU Privacy Guard. RPM Package creators use GPG to apply a digital signature to their packages. If a package was tampered with, then its GPG signature will no longer match what was placed in the original package.
X11 No Worky – Worky
Yikes, was banging my head against a wall trying to get X11 forwarding working on my RHEL 6.1 box. Every time I ssh'd in and attempted to pop an X window back to my fedora desktop, I was greeted with the error message below. # Error: no display specified … Continue reading X11 No Worky – Worky
Using ssh-copy-id to Push SSH key to Authorized Keys
Everywhere I have ever worked we have always used complex scripts to push out id files to enable passwordless authentication from a bastion host. Today I stumbled across ssh-copy-id which is about as easy to use as it gets.
Enabling SNMP in ESXi 4.1 using the Remote CLI
Based on the fact that ESX 4.1 is the last major release of ESX, I decided that I would make myself familiar with managing ESXi hosts. Since I monitor all my hosts via Zenoss, I figured that I needed to get snmp up and running first
Reset HP ILO Via the Command Line
Its not unheard of that an HP ILO can become sick and slow down to a crawl. When this occurs a restart of the ILO is in order, which is easily accomplished via the ILO cli interface. Make sure that you have enabled ssh access in ilo.