SIP: Invalid INVITE Source Address
This signature detects SIP Invite messages with invalid or improper IP addresses in the From parameter. The following address ranges are considered invalid: 192.0.2.0/24 and 24.0.0.1 (pre-registered private), 127.0.0.0/8 (localhost), 224.0.0.0/8 (Multicast), and 255.0.0.0/8 (broadcast).
References
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