The OpenConnect VPN server (ocserv) is an open-source Linux SSL VPN
server designed for organizations that require a remote-access VPN with
enterprise user management and control. It follows the OpenConnect
protocol and is the counterpart of the OpenConnect VPN client. It is
also compatible with Cisco's AnyConnect SSL VPN.

The OpenConnect VPN is less vulnerable to detection than OpenVPN, IPsec,
and WireGuard because it looks like a normal HTTPS connection (if UDP
is not used).

The program consists of:

1. ocserv, the main server application
2. occtl, the server's control tool that allows one to query the server
for information
3. ocpasswd, a tool to administer simple password files

A user and group "ocserv" must exist prior to running this script.
To create them, run as root:
  groupadd -g 382 ocserv
  useradd -u 382 -g 382 -s /sbin/nologin -M ocserv

Optional dependencies (autodetected):
- llhttp, protobuf-c - if not present, then bundled versions will be
  used
- rubygem-ronn - if present at build time, man pages will be
  re-generated
- GeoIP
- libmaxmind
- oath-toolkit