Microsoft Windows 7 PPTP issues: spurious ICMP protocol-unreachable sent

I was recently confronted to a strange issue with a PPTP VPN connection to a central site. Some users could connect and some others could not. They all used Windows 7 with SP1, configured the same way, and all computers were behind NAT/PAT routers but not necessarily on the same site. On the VPN server, the only information I could get was this log stating the GRE protocol was unreachable:...

February 23, 2016

ZFS bug in FreeBSD and FreeNAS

After a few weeks using FreeNAS 8.3.1, I noticed I could not create new volumes because the pool was out of space. The problem was that I should have had enough space, by a long shot. In fact, one of my “block” volumes was taking space more than twice it’s size. I had other volumes that seemed unaffected (or less affected), the only difference was that the problematic volume had volblocksize=8k set ....

July 15, 2013