NATS 1505 Lecture Notes - Lecture 18: Network Administrator, Firewall (Computing), Port Forwarding
23 Aug 2020
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The search engine will return your public ip address: to run a port-scan for six common ports against your home router or firewall, go to the nmap. Online port scanner at https://hackertarget. com/nmap-online-port-scanner/ and enter your public ip address in the input box: ip address to scan and press quick nmap scan. Security appliances are most effective when they are part of a system. Security appliances can be stand-alone devices, like a router or firewall, a card that can be installed into a network device, or a module with its own processor and cached memory. Security appliances can also be software tools that are run on a network device. Routers: cisco integrated services router (isr) routers, shown in figure 1, have many firewall capabilities besides just routing functions, including traffic filtering, the ability to run an intrusion prevention. System (ips), encryption, and vpn capabilities for secure encrypted tunneling.
