Well, I did some installing and installed ufw and added 1723 and 22 to the allowed list.
Also strange: when I use the command
I get no response.
service pptpd status
I enabled logging on the firewall and I can see that I'm getting blocked.
I can't add the port 1723 to the allowed list, as it's already on there. I obviously restarted the service too.
Nov 19 0 kernel: [15491.072669] [UFW BLOCK] IN=eth0 OUT= MAC=00:XX:25:e4:XX:7d:00:XX:9f:4d:93:76:XX:00 SRC=18.104.22.168 DST=192.168.1.103 LEN=64 TOS=0x00 PREC=0x00 TTL=45 ID=57419 DF PROTO=TCP SPT=58938 DPT=51413 WINDOW=65535 RES=0x00 SYN URGP=0