Added chain_exists() check to SPA rule creation so that if any
of the fwknop chains are deleted out from under fwknopd they will be
recreated on the fly. This mitigates scenarios where fwknopd might be
started before a system level firewall policy is applied due to init
script ordering, or if an iptables policy is re-applied without
restarting fwknopd.
Implemented a new check to ensure that the iptables 'comment' match exists to
ensure the proper environment for fwknopd operations. This check is controlled
by the new ENABLE_IPT_COMMENT_CHECK variable, and was suggested by Hank
Leininger.
Added new command line options --fw-list-all and --fw-flush to allow all
firewall rules to be displayed including those not created by fwknopd, and
allow all firewall rules created by fwknopd to be deleted.
Also switched -D config dump output to stdout.
Replaced all instances of "_exp_" with the #define EXPIRE_COMMENT_PREFIX so
that the prefix can easily be changed. so
that the prefix can easily be changed. so
that the prefix can easily be changed. so
that the prefix can easily be changed.
