I detected heavy traffic on the outside interface of my PIX that indicated an attempt to spoof with 127.0.0.1. I set up ACLs on my gateway routers to deny spoof attempts. On one router I had over 1 million matches for 127.0.0.0 I am also seeing inbound traffic from outside with source IPs assigned to nodes on the inside network, specifically, our email mx record IP address, our web site IP address, and our DNS server IP addresses. Anybody know what might be going on with these attempts to spoof IPs?
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...