Track TCP and UDP Connections With Zabbix
There is a very easy way to track opened TCP connections in Zabbix. Although it does not come built in to the Zabbix agent, it is simple enough to get. This method will
Using rsync on an Alternate SSH Port or with OpenSSH Keys
Best practices state that you should run ssh on an non-standard port. Unfortunately some programs use port 22 by default and it isn’t obvious what the switch is to change this
Simple Sysadmin Trick: Using tcpdump To Sniff Web Server Traffic
Sometimes, you just have to look into the raw data to see what your web server is doing. The logs might not show you enough detail or you suspect something is going on
How We Defeated a Proxy Jacker (Google Web Spam Syndrome)
A few months ago, we had an interesting issue with another website stealing our content in an unusual way. Essentially they ran a proxy service on a similar domain (a .com.ar instead
Evaluating FTP Servers: ProFTPd vs PureFTPd vs vsftpd
Usually, I will try to push clients towards using SCP (via a client such as WinSCP), however inevitably there are clients who do not understand this new method of accessing their files securely