RFC 793 defines some of the basic information needed to understand the TCP Header. Shown below is the ASCII art for the header. Im going to cover each item.
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Source Port | [...]

As simple as it is, here are is a list of some of the “Common RFCs” youll need to know about for the exam. First 3 are taken off the blueprint.
RFC 2401 – Security Architecture for the Internet Protocol
RFC 2827 – Network Ingress Filtering: Defeating Denial of Service Attacks which employ IP Source Address [...]

The last two sections of the CCIE Security Lab blueprint are just chock a block with vague items that could be on the CCIE Lab. One of those items that’s easy to overlook is “Catalyst Management and Security.” Your suggestions about what’s in this section are welcome. I suspect that port security [...]