Mitigating control plane attacks on Cisco devices: http://itsecurity.telelink.com/control-plane-attack/ http://itsecurity.telelink.com/control-plane-attack/ Co

Mitigating control plane attacks on Cisco devices: http://itsecurity.telelink.com/control-plane-attack/ http://itsecurity.telelink.com/control-plane-attack/ Control plane security overview: http://www.cisco.com/c/en/us/products/collateral/security/ios-network-foundation-protection-nfp/prod_white_paper0900aecd805ffde8.html http://www.cisco.com/c/en/us/products/collateral/security/io... Control plane best practices: http://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html http://www.cisco.com/c/en/us/about/security-center/copp-best... Protecting the Router Control Plane: https://tools.ietf.org/html/rfc6192 https://tools.ietf.org/html/rfc6192 You'll probably also want to read the Network Security Baseline: http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Security/Baseline_Security/securebasebook/sec_chap1.html http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Se... More resource exhaustion DoS: TTL expiry attack http://www.cisco.com/c/en/us/about/security-center/ttl-expiry-attack.html http://www.cisco.com/c/en/us/about/security-center/ttl-expir... Troubleshooting high CPU use (on 7500's) http://www.cisco.com/c/en/us/support/docs/routers/7500-series-routers/41160-highcpu-ip-input.html http://www.cisco.com/c/en/us/support/docs/routers/7500-serie...