Asus AAM60BI Kurzanleitung zur Einrichtung Handbuch - Seite 18

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6 Advanced

6.1 Port Forwarding

The normal way of using your Asus router is in NAT mode (see below).

Most users will use their router with NAT enabled because this allows

them to 'share' their internet connectivity across their whole network

without needing a block of static IP addresses from the ISP i.e. the ISP

sees the whole of your LAN as a single IP address and the router

automatically sorts out traffic to the correct local clients:

However using NAT has it's advantages and disadvantages. The

advantages are it allows you to easily run multiple PC's through a

single user ISP account and it acts as a natural firewall stopping

unsolicited incoming traffic. However the disadvantage of NAT is that

some software needs the IP address of the PC to be 'exposed' to the

outside world – this is just what NAT stops!

The normal way around this problem whilst still retaining the NAT

mode is to use port forwarding. Port forwarding (also sometimes

called pinholeing) tells the router to direct certain incoming traffic to

specified local addresses. e.g. if you are wanting to run a local web

server on address 192.168.1.10 and you want external internet users to

be able to see your server then you need to instruct the router to

forward all port 80 TCP requests (the port used by http) to your local

server.

Now to add a port forwarding rule enter first of all

select the Protocol (e.g. http uses TCP). Then

enter the incoming port range (so, for example if

it's just port 80 you want to forward then it will be

80~80) and enter the same range for the New ports

(e.g. 80~80). Finally enter the IP address of the

local client computer to receive the ports (e.g.

192.168.0.10):

Now click on submit. The rule is now added to the

'Multiple Port Forwarding Table List' in the

centre of the page.

Finally, and this is important (!), select Action

Save and click on submit again. This saves the

To set-up port forwarding bring up the router web

based configuration screen and click on Network

Service/NAT:

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