Entries by Stefan Helander

pfsense IPsec VPN tunnel disconnects after 8 hours

I’ve been troubled by the annoying disconnection of the IPsec VPN tunnel on a pfsense firewall. The tunnel disconnects after about 8 hours. The solution in my case was to enable “Disable rekey” which “Disables renegotiation when a connection is about to expire.“. The setting is found under Phase 1 advanced settings.

Ispconfig3: Let’s Encrypt not working

There can be several reasons for Let’s Encrypt certificates not being issued for sites. These are some things to check: When creating a new website, save it first, then open it again and check Let’s encrypt and then save it (i.e. don’t check the Let’s Encrypt unless the website has been saved at least once […]

Asterisk / FreePBX sip trunk registration problem, Serious Network Trouble

The asterisk log file (/var/log/asterisk/full) shows entries like this: [Sep  3 04:02:08] ERROR[3984] chan_sip.c: Serious Network Trouble; __sip_xmit returns error for pkt data Solution: The server had been moved from one public IP-address to another. In Asterisk PBX settings, the fields for both External IP and Bind Address (under Advanced) needed adjustment to the new […]