UFW stands for Uncomplicated Firewall, and is a user-friendly frontend for managing iptables (netfilter) firewall rules. It is the default firewall configuration tool for Ubuntu and is also available for other popular Linux distributions such as Debian and Arch Linux. Prerequisites The user running UFW commands must be a sudo user. Listing UFW Rules One of the most common tasks when …
After five months of development, the release of OpenSSH 8.5 is presented along with which the OpenSSH developers recalled the upcoming transfer to the category of obsolete algorithms that use SHA-1 hashes, due to the greater efficiency of collision attacks with a certain prefix (the cost of the collision selection is estimated at about 50 …
You want to use Linux and OpenSSH to automate your tasks. Therefore you need an automatic login from host A / user a to Host B / user b. You don’t want to enter any passwords, because you want to call ssh from a within a shell script. First log in on A as user …