Tier-2 Explanation: As a mechanism for mitigating Denial of Service attacks, Unicast Reverse Path Forwarding (uRPF) comes in two flavors. The first and original implementation was uRPF strict mode. In this mode, uRPF is configured on the interface and verifies that any packet coming in the interface is sourced from a known route within the [...]
Filed under: RIP, Router Security | Tagged: IOS Hardening, IP Services, Security | Leave a Comment »
Tier-2 Explanation: Gap analysis on this topic was a zero. The DistributedDirector feature set/Application is new to me and will require more research to achieve Tier-3 understanding.
The Director Response Protocol (DRP) is used by the DistributedDirector application to query DRP Servers for EGP/IGP metric information. With the information gathered, the Director is able to respond [...]
Filed under: IP Services | Tagged: IP Services, More to come, Theory | Leave a Comment »
IOS 12.2-> Configuration Guides-> IP Configuration Guide-> IP Addressing & Services-> Configuring IP Addressing
Network Address Translation (NAT) has become de facto method of maintaining private address space for internal enterprise/campus configuration while also conserving the rapidly diminishing public IPv4 address space.
This article will focus on the configuration guidelines for tier-2 understanding of NAT.
NAT Terminology:
Inside-Local: An [...]
Filed under: IP Services | Tagged: Configuration, IP Services, Theory | Leave a Comment »
