Hello, I'm trying to run firewall-cmd (0.3.9 on RHEL7) under a script that is run by a vpn server (as root) on a client connect. The command is something like the following: #!/bin/sh firewall-cmd --zone=internal --add-interface=$DEVICE However, that script seems to hang and firewall-cmd never returns. Running the same command from a terminal or using screen succeeds. Is there some requirement of firewall-cmd to run from a terminal? Any ideas on how to debug? The hanged process on gdb seems to block at: #0 0x00007f1dd5a76df0 in __poll_nocancel () from /lib64/libc.so.6 #1 0x00007f1dcb19d780 in socket_do_iteration () from /lib64/libdbus-1.so.3 #2 0x00007f1dcb19c5ff in _dbus_transport_do_iteration () from /lib64/libdbus-1.so.3 #3 0x00007f1dcb185d7c in _dbus_connection_do_iteration_unlocked () from /lib64/libdbus-1.so.3 #4 0x00007f1dcb18687c in _dbus_connection_block_pending_call () from /lib64/libdbus-1.so.3 #5 0x00007f1dcb186d3a in dbus_connection_send_with_reply_and_block () from /lib64/libdbus-1.so.3 #6 0x00007f1dcb3ca0df in Connection_send_message_with_reply_and_block () from /usr/lib64/python2.7/site-packages/_dbus_bindings.so #7 0x00007f1dd6751b94 in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0 #8 0x00007f1dd67531ad in PyEval_EvalCodeEx () from /lib64/libpython2.7.so.1.0 -- Nikos Mavrogiannopoulos, Sr. Security Software Engineer Red Hat, Inc.