Yeri Tiete

Category: Networking

  • OpenVPN packet drops

    I recently started to notice following error messages on my openVPN server. ovpn-server[6306]: vpn.rootspirit.com/85.234.x.y:62068 MULTI: packet dropped due to output saturation (multi_process_incoming_tun) This basically means that the TUN or TAP interface is making more packets than the real (TCP) interface can handle. As I need to run OpenVPN using the TCP protocol (instead of the…

  • Barcamp WiFi: the statistics – #BCA2010

    A total of 87 IPs have been handed out (so 87 different MAC addresses) A total of 70 users used the (transparent) Squid proxy, so a few never logged in There was a total of 1.3Gb of HTTP traffic (Saturday only) There was a total of 720.91Mb upload and 2.11Gb download traffic (including Friday evening)…

  • Barcamp Antwerp – #BCA2010

    For those visiting BarCamp Antwerp tomorrow, make sure to connect to the open Userplus.org “barcamp” WiFi SSID. Any feedback or comments about it can be mailed (yeri @ rootspirit . com) or left below.

  • Linux gateway/router + unable to access certain (HTTPS) sites

    I’ve had an issue for a while, being unable to access certain websites such as https://fon.com, but also certain parts of the Apple, Fortis and Microsoft site, while other (https) websites worked fine. Running Wireshark I found that only about 5ish packets got transferred, and all other data to that website abruptly stopped. I’m using…

  • Public DNS server

    I have been running a public DNS server for private purpose (never liked my ISP’s DNS servers, and the root servers were usually located too far away (at least those with easy to remember IPs). Anyway, been testing it since this summer, and so far it’s been working great. the DNS server running on a…

  • OpenVPN & Windows 7

    There’s a great GUI out for OpenVPN & Windows, located here. However, this GUI includes an old OpenVPN, that is no longer compatible with Windows 7 and Windows Vista. The TUN/TAP driver will be blocked due to compatibility issues, and when trying to connect to a VPN, you’ll get an error along the lines of:…

  • MRTG

    As I often have people asking for the files I use to make my pretty MRTG graphs; I’ll publish them here. Here are some examples: Zero – One – Four – vm1 – Sauron The config files: Sauron (including Squid stats), Zero (including fan stats). List of files included: indexmaker; simple script (included with MRTG)…

  • Windows 7 + iPhone tethering

    If Apple was so kind to give you tethering (and didn’t silently remove it after an update), or if you just happen to have enabled it using, let’s say, the alternative method. And you happen to be forced to use Windows, and you really are tired of XP, and Vista surely isn’t an option; you’re…

  • Prowl: check server status (using ping)

    Yesterday I’ve start using Prowl, as I heard good comments about it. And one of the things I want it to check, are my server statuses. I made a quick script using bash and crontab to check every 10 min if it replies on ping. Per server, I created “host.domain.tld.sh” (e.g. zero.rootspirit.com.sh), and added this…