Set
Up Software or Hardware Firewall
The Internet provides for 65536 ports – We generally
use:
§html =
80
§ftp =
21
§email =
25
§A firewall
blocks potentially damaging Internet traffic from reaching your PC via unused ports, thus protecting it from some virus attacks
§Activate
XP’s firewall (Control / Network
Properties / Advanced
/ Windows Firewall / Settings) or buy
one
§Hardware
firewall can be set up in most newer cable / DSL routers using NAT (network address translation)