/etc/ha.d/resource.d/portblock is in heartbeat 1:3.0.6-7.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #!/bin/sh
#
#
# Description:	wrapper of OCF RA portblock, based on original heartbeat RA.
#		See OCF RA portblock for more information.
#
# Author:	Xun Sun <xunsun@cn.ibm.com> 
# Support:      linux-ha@lists.linux-ha.org
# License:      GNU General Public License (GPL)
# Copyright:	(C) 2005 International Business Machines
#
. /etc/ha.d/resource.d//hto-mapfuncs
usage()
{
    echo "usage: $0 {udp|tcp} portno,portno {block|unblock} $LEGAL_ACTIONS"
    exit 1
}
if [ $# != 4 ]; then
    usage
fi
OCF_RESKEY_protocol=$1
OCF_RESKEY_portno=$2
OCF_RESKEY_action=$3
export OCF_RESKEY_protocol OCF_RESKEY_portno OCF_RESKEY_action
OCF_TYPE=portblock
OCF_RESOURCE_INSTANCE=${OCF_TYPE}_$1_$2_$3
export OCF_TYPE OCF_RESOURCE_INSTANCE
ra_execocf $4 
 |