ipsec_verify - see if the IPsec subsystem has been installed correctly
The ipsec verify examines the local system for a number of common system
faults and configuration mistakes.
Written originally for the Linux FreeS/WAN project
<https://www.freeswan.org> by Michael Richardson. Rewritten in
python by Paul Wouters
Verify was converted from shell to perl to python, and the
MASQUERADING/NAT rule tests still need to be ported. The ss command is
around in various non-intuitive and buggy versions, causing some
false-positives with respect to listening on UDP port 500 and 4500. See
https://bugzilla.redhat.com/show_bug.cgi?id=829630
Paul Wouters
placeholder to suppress warning