To protect a network from outside intuders,use a?

Question

1firewall
2.gateway.
3.router.
4.protocol.

Answer 1

Firewall... u can configure your firewall for preventing intruders . U can also go for IDS (Intrusion Detection System) which will help u to detect all types of malicious network traffic and computer usage that can't be detected by a conventional firewall. u can manupilate network attacks against vulnerable services, data driven attacks on applications, host based attacks such as privilege escalation, unauthorized logins and access to sensitive files, and malware with help of IDS.

Answer 2

Router is what i would use, i can set ACLs on it, access control lists, and most routers have NAT which hides my internal address from others.

Used with a firewall you make a lil better wall of protection.

Answer 3

in case you advise your internet, use WPA or WPA-2 encryption. those are the main present day sorts of encryption and that they are very perplexing, if not impossible, to crack. WEP should not be used for the reason that's amazingly trouble-free to crack it. yet another determination could be to not broadcast your SSID. which ability whilst people seek for instantaneous networks on their computers, they gained't see yours. except they have by some ability found out your SSID, they gained't comprehend it exists. a mixture of the two certainly one of those techniques is probably your appropriate guess, while you're only seeking to maintain individuals off your internet connection. you should be waiting to do distinctive those issues by way of your router configuration internet site.

Answer 4

Firewall -
http://en.wikipedia.org/wiki/Firewall

Answer 5

I guess '1'. Do I get an A?