Topher, an avid Mac user for the past 15 years, has been a contributing author to MacFixIt since the spring of 2008. One of his passions is troubleshooting Mac problems and making the best use of Macs ...

If shutting off telnet access and insisting that all system-to-system connections use ssh isn’t enough to toughen your system’s hide, here’s another way to make your servers just a little more ...

If you run a lot of terminal tabs or scripts that all need to make OpenSSH connections to the same server, you can speed them all up with multiplexing: making the first one act as the master and ...

This is a FreeBSD 11.1 system with sshd running on the default port 22. It is running from behind a router that accepts connections to port 10000 and then directs them to the FreeBSD system’s IP and ...

In a typical work week, a Unix systems administrator is likely to have at least one small mystery to solve — one “huh?”, one “that doesn’t make any sense” or one “I’ve never seen this before”. Most of ...

I use iptables to rate limit ssh connections, as opposed to using it for outright banning. The goal is to keep brute force attempts from exhausting the available login processes as well as to make ...