L1-07E.44 – MAC Addresses & Firewalls A MAC address is a unique identifier of a router, modem or switch Network administrator can set a port to accept a connection from any MAC address it sees only the first MAC address it sees (any other address is refused and...
L1-07E.43 – Getting thru the Firewall Add your IP Address, Domain Name, Protocols, Port numbers or Words to the approved list Or Remove it from the bad list List may be at the firewall or on the internet or both Port forward- set aside one port number on the gateway...
L1-07E.42 – Firewalls Can Block Specific IP Address- eg: 216.27.61.137 Specific Domain Name eg: www.alarm.org Specific Protocols- eg: http, ip, smtp Specific Port numbers- eg: 80, 21 Specific...
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