Tag: network
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9 posts · All tags
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Show the TCP connections made
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 funk...
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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, i...
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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...
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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 ro...
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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...
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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 cr...
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What if an interface starts up?
What happens if you bring up an interface using an init script on gentoo? Do you know? Already figured out how to start services depending on what interface is up/down? The gentoo-way is done in /etc/conf.d/net. Looki...
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Spamassassin for Webpages?
I think I should look for another hobby as having bad ideas and trying them out can be quite time intensive. But here is an idea I put to code lately. What is the best spam killer for free? Spamassassin. Can't we abus...
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No more power loss
Since yesterday I got a brand new APC 3000 UPS installed in the basement to protect my servers and stuff there. Installing the hardware itself was rather simple. The management software was a big bugger as it wanted m...