Juniper Firewalls and IPv6

A little firewall

I found an interesting side-effect of the Juniper firewalls when you introduce IPv6.  In hindsight it appears perfectly reasonable but if you are not aware of it in the first place you may have a much more permissive firewall than you thought.  My setup is such that my internet address changes every time I connect to an ISP. I have services “behind” the Juniper that I want to expose onto the Internet, in this case a mailserver.

JFFNMS and IPv6

ipv6-google-rrt.png

One of the many Free Software projects I work on is JFFNMS, which is a network management system written in PHP. In light that the last IPv4 address blocks have now been allocated to APNIC it’s probably timely to look at how to manage network devices in a new IPv6 world.
First you need to get the basics sorted out and for that it is best to use the net-snmp command line utilities to check all is well. Then its onto what to do in JFFNMS itself.
Now fixed with proper markup, I hope.