Posts in 2013
Observium, A Worthy Adversary!
Tuesday, January 15, 2013 in Monitoring
I’ve used Cacti for the past 10 years roughly, and it has served me well. It is fairly easy to make custom templates, custom data sources, etc. Lately it has been the bane of my existence though, due to a combination 64-bit counters not being …
SSL CLI Troubleshooting
Sunday, January 13, 2013 in Troubleshooting
This afternoon I setup nginx to act as a pop3/imap/smtp proxy w/ SSL. During the setup process it was necessary to test the services via CLI. While its fairly simple to test non-encrypted services, “telnet xx.yy.com 995” doesn’t …
An MX Record, Finally!
Friday, January 11, 2013 in Systems
Its been a while since I had an MX record, half due to connectivity, half due to lack of yet another email address. I like running Postfix/Dovecot, but most of the “recipes” I’ve followed and run lately have just been way too raw …
IPAM: IP Address Management
Monday, January 07, 2013 in Systems
After a recent discussion about IP Address Management (IPAM) software for small ISPs on the NANOG mailing list, I decided to setup subnetsmngr for my ISP. I am a big fan of open source software, and the demos of commercial IPAM software I’ve …
Which Sites ARE IPv6 Enabled?
Monday, January 07, 2013 in IPv6
So if you have IPv6 you’re probably wondering… so now that I’m here… what’s on it? The answer is not straight forward. It can be fun to see if a site you visit is IPv6 enabled , and you can do that in Firefox by using …
Enabling IPv6 on Cisco 3560/3750
Thursday, January 03, 2013 in IPv6
There are a few steps required to enable full support for IPv6 on a Cisco Catalyst 3560 or 3750. Firstly, you need to change the sdm prefer to sdm prefer dual-ipv4-and-ipv6 (default | routing | vlan) which will require a reboot. If you need to do …
Posts in 2005
NetInstalling OpenBSD on sparc/sparc64
Tuesday, February 01, 2005 in Systems
I have had a few friends (who ended up wimping out and installing either via scsi cdrom, or by writing the miniroot.fs to the swap partition) ask how to do a netboot install of OpenBSD on sparc or sparc64 architecture. First things first enable the …