IP spoofing in transparent mode

The IP spoofing feature has been enhanced to include Layer 2 transparent mode support. IP spoofing is most frequently used in denial-of-service attacks. In an IP spoofing attack, the attacker gains access to a restricted area of the network and inserts a false source address in the packet header to make the packet appear to come from a trusted source. When SRX Series devices are operating in transparent mode, the IP spoof-checking mechanism makes use of address book entries.