Match related traffic from conntrack helpers ftp h323 pptp nfs sip tftp sqlnet ftp Related traffic from FTP helper h323 Related traffic from H.323 helper pptp Related traffic from PPTP helper nfs Related traffic from NFS helper sip Related traffic from SIP helper tftp Related traffic from TFTP helper sqlnet Related traffic from SQLNet helper (ftp|h323|pptp|nfs|sip|tftp|sqlnet)