Blog

News and views from the Clarksys crew on all things cloud, cybersecurity, and scale.

Make an ISO image

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…

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Passwordless Logons with SSH

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…

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Linux Kernel Config

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…

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Building a Delay Router

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

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