A RISC OS server using RPCEmu

A very long time ago I used telnet talkers. Around the time that ICQ was popular and before MSN Messenger. gerph, who was very well known in the RISC OS scene (and went on to work for RISC OS Ltd working on RISC OS 4), wrote a telnet talker in BASIC called TalkerD to demonstrate his excellent EasySocket library and I adapted TalkerD to be more NUTS-like. This became known

Banning Repeat Offenders With fail2ban

More and more I see fail2ban banning the same hosts repeatedly. One way to tackle this could be to increase the ban time but you could also have fail2ban monitor itself to find “repeat offenders” and then ban them for an extended period of time. Firstly, create a filter definition: [Definition] failregex = fail2ban\.actions\[\d+\]: WARNING \[.*\] Unban <HOST>$ ignoreregex = fail2ban\.actions\[\d+\]: WARNING \[repeat-offender\].*$ This will be used against the fail2ban log and

loadbalancer.org Linux Feedback Agent

I’ve been working with some loadbalancer.org appliances recently, load balancing traffic over MySQL and Apache servers running Linux. The load balancer supports a feedback agent where it can query the real server to gauge how utilised it is based on, for example, CPU load and then distribute the request to the real server that should perform the best. Over on the loadbalancer.org blog is an article about the feedback agent and how to implement it