Unicast Reverse Path Forwarding (uRPF)
Unicast Reverse Path Forwarding (uRPF) Unicast Reverse Path Forwarding (uRPF) is a security feature on Cisco ISR routers and ASA or Secure Firewall Threat Defence (FTD) firewalls, that enables the…
ASA Traffic Zones
ASA Traffic Zones The Cisco ASA supports Equal-Cost multi-Path (ECMP) using Traffic Zones feature. Multiple interfaces (up to 8) are assigned to a Traffic Zone, which lets traffic from an…
ASA Interface High Availability
The Cisco ASA software image running on either Firepower or ASA hardware supports interface high availability using PortChannel/Etherchannel and Redundant interfaces. This post covers describes both solutions and provides information…
ASA Transparent Mode
The Cisco ASA software supports two firewall modes, routed and transparent. A transparent firewall is a layer 2 firewall that acts like a stealth firewall and is not seen as…
ASA Service Policies
The Cisco ASA firewall, Service Policies use the Modular Policy Framework (MPF) to provide a flexible way to configure ASA features, such as connection settings, inspection, QoS, redirection to service…
ASA TCP Intercept
An attacker can launch a DOS attack by flooding a host with thousands of TCP SYN packets, the source address would be spoofed with no way for the host server…