Today I planed to move my FTP server to a new system running Debian [http://www.debian.org] wheezy [http://www.debian.org/releases/wheezy/]. Usually I'm running vsftpd [https://security.appspot.com/vsftpd.html#about], so this was also the plan for the new host. As this system is…
Having monitoring for dualstack connectivity inplace [https://log.cyconet.org/2012/03/09/monitoring-dualstacked-systems-with-icinga] helps a lot. Unfortunately in most cases we are running also services we want to offer dualstacked. In the past we just monitored in those cases IPv4 only or created a separate check for the same…
Since some ages we are deploying IPv6 in our network and also for some selected services. Some days ago we discovered, that anybody has enabled accidentally a router advertisement daemon in a network where this shouldn't happen. As result of this, IPv6 enabled systems got (additional) IPv6 addresses and some…
On Friday at 11:47:19 +01:00 our prefix did hit the BGP routing tables .... So AS20646 managed to fix their filters. Also the reverse delegation was set up today, so we took another step forward.…
Since we already have IPv6 upstream through IPTunnel with AS20646 for a /40 of them (native isn't possible with our router connected to them, yet) it will only be a question of time until this uplink has fixed his filters. But the goal is to get native upstream.... at this…
We decided, after we will reach the next billing category 2007 anyways (you remember, we got /18 allocated), that it will be neat to request a /32. I created a sweet address plan and got the allocation in less than 5 hours approved. :-)…
Linux Advanced Routing & Traffic Control HOWTO [http://lartc.org/howto/] Test script for P2P [http://lists.netfilter.org/pipermail/netfilter/2003-June/044718.html] Shaping ADSL traffic with linux [http://nsd.dyndns.org/shapedsl/] Filtering IPv6 Traffic [http://lartc.org/howto/lartc.adv-filter.ipv6.html]…
# tcpdump -i eth0 -vv ip6…