Compatible Systems MicroRouter 1200i Manual de usuario descargar pdf (Pagina 25)

GORAMO – Janusz Górecki

MultiLink Router and MikroRouter

www.goramo.com.pl

age 25 from 41

4.12

Setting up redirects (port forwarding)

Port forwarding and addresses redirection allows for access of computers of local network for

users of the external network. Redirection is the combination of an incoming address (Incoming IP

Address and incoming port (Port) to the addresses on the LAN (Target IP Address/Port).

Port forwarding is set with a list of rules that you can add and edit using the form available on the

table and the Port Forwarding tab.

In this example, web server set up on the local network at 192.168.0.45 is available on the external

network, also known as a Web server, only globally accessible address 83.15.39.82. Router forwards

packets addressed to him (83.15.39.82) that come to port 80 to the web server on your local network,

then transmits a response

Of course, that the operation was successful, the router interface should be assigned to the incoming

address "83.15.39.82".

4.13

Configuring the Firewall

Firewall is designed to block unwanted traffic packages. GUI allows the blocking of packets

addressed to the router, and packets that the router is to redirect. Blocking packets is achieved by

Linux iptables tool. Blocking packets passing through a router configure the firewall using a tab

Firewall/Forward. Blocking packets addressed to the router configure using tab Firewall/Input.

4.13.1 Blocking packets passing through a router

After entering the tab Firewall/Forward, we can determine what kind of packages can freely

pass through the router, which should be blocked.

At the beginning we define one of the strategies for packet transmission: all pass, and the selected

block, or at first glance more restrictive: block all, transmits selected. Strategies for choosing the field

value is defined: Firewall Forward Chain default policy. Selecting Accept means that packages that

are not caught by the rules of the Firewall (…) default Policy option will be passed through. Selecting

Deny option will see that if the package does not meet any of the criteria set out in the table of rules to

block/transmission package - the package is stopped.

Table of rules to block/transmit packets edit like any other table by adding/editing lines with a

green form of editing and watching the results of his work at the bottom of the page. The difference

between this table and the majority of the table configuration is that it is important in this sequence

of rows.

Each row defines the criteria package. Each package, before it is passed on through a router, you

must first be matched to the criteria in different rows of the table, from the first row at the top, the last

at the bottom. In addition to the criteria in each row is entered in the rule to be applied to the package

that meets the specified criteria. The first line, which meets the criteria that are analyzed in the

package - will include a rule that is applied to the package.

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Compatible Systems MicroRouter 1200i Manual de usuario Pagina 25