Posts Tagged ‘Linux’

CRS serial console with kermit

For those still inclined to use kermit for serial console access, these are the commands for connecting to a MikroTik CRS125 with default settings: # kermit C-Kermit 8.0.211, 10 Apr 2004, for Linux Copyright (C) 1985, 2004, Trustees of Columbia University in the City of New York. Type ? or HELP for help. (/root/) C-Kermit>set […]

IDS with MikroTik and Snort

UPDATE: For more flexible streaming, and for not having to hack your Snort init scripts, you might want to consider this article as well. Now back to the scheduled program. Port mirroring on a strategically positioned switch can be the best setup for an IDS sensor. If that’s not an option, RouterOS-based MikroTik devices support […]

Streaming from an underwater camera with a Raspberry Pi

Among this summer’s projects was getting an underwater camera online and streaming. The camera is placed within a fishing device designed like a cage, called Kjærra, dating back to the 14th century. The trap has a one-way entry; the fish enters the cage and can’t escape, and is subsequently extracted from the cage. When the […]

Using BOPM with InspIRCd

Using Blitzed Open Proxy Monitor (BOPM) with a fairly new version of InspIRCd needed a slightly different configuration than suggested here and there. The following is working for me, using InspIRCd 2.0.9 and the BOPM package provided by Ubuntu (Lucid, but shouldn’t make much of a difference). First of all, the BOPM service wasn’t granted […]

Reaching multiple instances of the same IP address

A friend recently presented me with the following challenge: Configure a system through which several appliances, all of them having an identical, non-routable, default IP configuration, can be reached simultaneously. All appliances are preconfigured with an IP address of and they had no routing configuration enabled. Yet they should all be reachable over the […]

GeoIP and MySQL

For my own and possibly others’ reference, these are quick notes on how to use GeoIP data from MaxMind in their new split file formats. Older tutorials describe using the GeoIP data from a time when they were one file, it seems now MaxMind have split into two files. The files are split into Location […]

Remote syslogging with OpenWRT Kamikaze 8.09

For Kamikaze 8.09 (RC1) the documentation on remote syslogging is a bit inaccurate or outdated – but this ticket pointed me in the right direction. Add the following to /etc/config/system: log_ip Reboot your unit and watch the logs roll in. Verify by checking what syslog is up to: root@OpenWRT:~# ps -ef | grep syslog […]

VLAN woes

I’ve been planning to do this for a long time and now I’m finally there. My home network now consists of two virtual host servers (one Xen and one KVM) and a firewall between them, all nodes understanding VLANs. On top of this, add a small but powerful Linksys switch and a Linksys wireless access […]