Disable SIP / IAX Helpers in Untangle

rmmod nf_nat_sip
rmmod nf_conntrack_sip
sed -i -e "s/nf_nat_sip//" /etc/untangle-net-alpaca/scripts/modules
sed -i -e "s/nf_conntrack_sip//" /etc/untangle-net-alpaca/scripts/modules

Copied here to find it easier since many threads on untangle forums querying it. 

Original located at http://forums.untangle.com/showthread.php?t=4337&highlight=disable+sip