Blog

Like this is a suprise to anyone living in Los Angeles. The interchange of Ventura Freeway US-101 and Interstate 405 ranked as America's worst highway bottleneck, according to a report issued Thursday by the American Highway Users Alliance, a Washington, D.C., lobbying group that presses Congress for more money for highway construction. Read the full story: L.A. freeways top list of worst bottlenecks … [Read more...]

These tips and tricks detail the command syntax necessary to test common services using a telnet client. Network and System administrators can attest to how invaluable these types of tests can be when troubleshooting a system. … [Read more...]

I have just released version 0.1 of mrtgsql. mrtgsql - a MRTG to SQL logging and reporting tool for MRTG Copyright (c) 2004 Max Clark mrtgsql is composed of two programs: mrtgsql which inserts data from the MRTG .log files into a database, and mrtgreport which reports usage on the interfaces in total GB and the 95th percentile. Grab it from Github: mrtgsql … [Read more...]

Seeing that I have had to do this twice now this month, I figured I would post this brief HOWTO. 1. Use the software cd 1 of 2 to recover root password 2. Boot cdrom -s from ok prompt 3. mkdir /tmp/a 4. mount /dev/dsk/c0t0d0s0 /tmp/a 5. cd /tmp/a/etc 6. TERM=vt100; export TERM 7. vi shadow 8. Delete passwd entry (13 chars) in the line for root … [Read more...]

Entropy is used by the random number generator on your system for things like SSL, SSH and GPG, put simply encryption. On FreeBSD 4 it is possible to increase the inputs to generate entropy for your system (usefull if you are generating a large GPG key over the network). 1. Find the irqs of devices on your system. # dmesg | grep irq pci0: at 29.0 irq 7 pci0: at 29.1 irq 11 pci0: at 29.2 irq 9 pci0: at 29.7 irq 11 em0: port 0xc000-0xc03f mem 0xe2000000-0xe201ffff irq 10 at device 5.0 on … [Read more...]

From How to make a bootable OpenBSD CD on www.shockley.net On a Unix machine with the files in /iso/openbsd/3.4 # mkisofs -v -r -l -L -T -J -V "OpenBSD-3.4" -A "OpenBSD v3.4-Release, Custom ISO, 2004-01-15." -b i386/cdrom34.fs -c boot.catalog -o openbsd-i386-3.4.iso -x openbsd-i386-3.4.iso /iso/openbsd/3.4/ On a Windows machine with the files in c:openbsd3.4 c:isotoolsmkisofs -v -r -T -J -V "OpenBSD-2.8" -b c:/openbsd/3.4/i386/cdrom34.fs -c boot.catalog -o c:/openbsd/openbsd-3.4.iso -x … [Read more...]

Create your keypair: # ssh-keygen -t rsa Send the public key (~/.ssh/idrsa.pub) to the remote host. It is a plain text file. Store this in ~/.ssh/authorizedkeys on the remote host. If the file exists already, append it to the end of the file on a new line. Log out of the remote system. Try and log in. … [Read more...]

Put the CD in your cdrom, do not mount the cdrom. Option 1: $ dd bs=2048 if=/dev/$cdrom of=$file.iso Option 2: $ cat /dev/$cdrom > foo.iso … [Read more...]

I found this one during a Gentoo Linux install today. Instead of merging the config file from different linux sources you can grab your current config from /proc/config. Check it out... cd /usr/src/linux cat /proc/config > .config make oldconfig This will ask some questions about differences between your new sources and running kernel. … [Read more...]

The Building a Delay Router HOWTO discusses how to build a bridging ìdelay routerî using FreeBSD and dummynet to simulate various network connections. … [Read more...]