Monthly Archives: March 2008

Enable IPv6 on Cisco 6500 / 7600 Routers

We recently enabled IPv6 across our backbone. The following is an example configuration for a 7600 router running the SUP 720. All operations listed here resulted in zero downtime or impact to the existing IPv4 customers and IPv4 BGP peers. … Continue reading

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American Airlines Sucks

Like most people Christina and I like to check into our flight and print out the boarding passes the day before our flight. This makes things so much easier with a 6:30am flight out of LAX. So this morning I … Continue reading

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IPTABLES FTP Rules

To allow FTP with IPTABLES on a RedHat Linux box add “ip_conntrack_ftp” to the IPTABLES_MODULES configuration within /etc/sysconfig/iptables-config and make sure the following two lines are in /etc/sysconfig/iptables: -A RH-Firewall-1-INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state … Continue reading

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Day One Everything Changes

As children my Mother taught and enforced in us the Golden Rule… treat others as you would like to be treated (yes I know that’s not exactly it but try explaining “do unto” to a five year old). Later in … Continue reading

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