Compatible Systems MicroRouter 1200i Manual de usuario descargar pdf (Pagina 26)

GORAMO – Janusz Górecki

MultiLink Router and MikroRouter

www.goramo.com.pl

age 26 from 41

The most restrictive criterion for the time being you can specify:

• IP address/addresses of the sender of the package,

• IP address/addresses of the recipients of the package,

• the port to which the packet is routed

• the protocol by which the packet is sent (TCP/UDP/ICMP)\

The most universal criterion is to be met by all the packages: Source: all, destination: all, Port: all,

Protocol: ALL.

For these criteria, use one of two rules: that accepts - Accept or reject: Deny. In addition, each line can

indicate a comment.

An interesting field in the table is a field Service. This field is designed to relieve us from having

to enter manually the port and protocol. Selecting a package that service http will block traffic packets

TCP on port 80 Port and Protocol fields are taken into account only if the Service field is set to

Custom.

4.13.2 Blocking packets addressed to router

Packets addressed to the router are filtered via a tab Firewall/Input. The packet filtering rules are

the same as the packet filtering rules to be redirected - the only difference is the use of the filter. If the

package is not passed through the filter - the software (except, of course, software firewall) on the

router will not get the information that the package arrived at the router. We can thus either block all

attempts to contact the router from the external network, or vice versa - to designate the computers

from which we can only get to the router.

In order to learn the rules of configuration, you should refer to the section 4.13.1. We recommend

caution when configuring this tab - you can, because in a very effective way to deprive the

possibility of remote configuration of the router. In this case it will be necessary to login over the

RS-232 console.

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Compatible Systems MicroRouter 1200i Manual de usuario Pagina 26