| | | | Hardening Cisco Routers (O'Reilly Networking)
Master one single topic, and everything becomes clearer.
The field of network security is a huge subject. To be a network security expert, you must be an expert on routers, switches, hubs, firewalls, intrusion detection systems (IDS), servers, desktops, email, HTTP, instant messages, sniffers, and a thousand other topics. There are... |