SIP: Invalid SIP Packet
This signature detects packets using the SIP port (UDP/5060), but that do not contain any SIP information. Some Internet Telephony devices incorporate these sorts of packets as "Keep Alive" packets, but they are not valid SIP packets.
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3