Occasionally I work from home, and access to certain development resources is restricted to either the office IP or the use of a secure VPN. Since everyone uses Macs or Windows at the office there are no manuals or guides to set it up on linux, so I had to figure stuff out myself.
First of all, Ubuntu doesn’t have L2TP support out of the box currently, but luckily Ask Ubuntu has plenty of questions on the topic. Apparently L2TP was removed at 16.04 for some dependency reason, and replaced with a package called StrongSwan. Luckily it’s in the
main repository, so it can be installed without much hassle. (However, I tried it on 18.04 and I was unable to add a VPN as the Save/Apply button simply wouldn’t work.)