ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: DH GEX group out of range
You’re trying to SSH to a Zyxel switch and get the following message: user@hostname ~ $ ssh [email protected] -p 22 ssh_dispatch_run_fatal: Connection to x.x.x.x port
Operating Systems
How to get a script to automatically start on startup on a Debian Linux System
Problem: After your system has started, you need a script to run always. Solution: On a typical Linux system you can simply created an /etc/rc.local
How to see what’s running on a port in Linux
user@hostname ~ $ sudo lsof -i -P -n | grep LISTEN | grep 1025 mailcatch 1104 root 9u IPv4 27240 0t0
How to set up a fault tolerant / failover system on Linux
Problem: You need to make sure that your disks are 100% redundant. Solution: A popular way on Linux to do this is DRBD. Here are
Two good configuration files for DRBD and OCFS2
Problem: You need to know if your DRBD and OCFS2 disk fault tolerance has been setup correctly but the configuration options are overwhelming. Solution: See
How to use SCP to quickly copy files from one server to another
Issue: You want to copy files from your local computer to a remote server. On the remote server you don’t have root access. Or maybe
How to configure Debian source.list for automatic download of Debian Packages
Issue: You’ve installed Debian but during the installation you didn’t specify a good DNS server, or Debian didn’t pick up any of the sources you
How to check what version of Linux Mint you are running
To see which version of Linux Mint you are using, issue the following command: user@host ~ $ cat /etc/issue Linux Mint 19.1 Tessa \n \l
Cannot find Mintupdate icon, shield, or program in the menu
Issue: You’re trying to update Linux Mint 18.x to the latest 18.x version. You google that there is a program called Mintupdate, which is supposed
How to upgrade from Linux Mint 18.1 to 18.3 and then to 19.x
Solution: You want to upgrade your Linux Mint but you’re unsure how to do it. Following this article: https://www.tecmint.com/upgrade-to-linux-mint-19/ The steps are basically to first