This is a small snippet which has helped me on my server; showing you the top tcp connections made: netstat -atun | awk ‘{print $5}’ | cut -d: -f1 | tail -n+3 | sed -e ‘/^$/d’ |sort | uniq -c | sort -n -r Nothing funky, but a life saver sometimes ;)
Tag: network
The schizophrenic DNS
Today I’d like to introduce a small, but pretty useful feature of nameservers using BIND as an example. Delivering different answers for different IP ranges. Sure, this might sound strange, but if you dig into that, it’s pretty useful.
OpenVPN vs Win7 – Strike II
I guess you could sense that I wasn’t satisfied with my previous solution regarding OpenVPN GUI and user privileges. So I invested some more time to be able to cut down permissions again. I discovered a way that works without extending privileges or entering a password!
OpenVPN vs Win7
OpenVPN is a cool tool for doing quick and easy VPN connections that work. At least it is easy as long as you don’t drop administrative privileges for the common user. To get the VPN working, it is needed to set up routes to get the traffic to its destination which requires administrative permissions. But do we want […]
pfSense vs simple Router
Network management can be quite amazing for the end user – believe me. I could see it during the last days as I have had to replace one of the old Zyxel routers. For being able to manage the traffic I have decided to use the pfSense firewall as it’s able to do NTP, DNS, Proxy services and […]
If it takes some more time
… it was usually me doing fancy stuff on the network. Yesterday my blog was unreachable due to firewall maintenance. Yep, I have finally implemented the Netscreen Juniper and threw the old box away. I know, it is cruel replacing an old BSD box with an appliance, but it was the only way of reducing noise and power […]