DRO-210i Web Configuration
DRO-210i User Manual Page 3-24
Inbound Policy (Firewall) Rules:
The Traffic flowing from untrusted to trusted network is the Inbound
traffic.
Port Filter
- Port Filter Policy is used to allow or deny network packets
both coming from and going to the WAN. That is from Untrusted to
trusted network. This is based on the Transport type and port number. The
IP and the port to be blocked can be configured in the Port Filter
configuration page.
·
Deny all services to be accessed except
"Permitted Service"
–
This will deny all the packets from the Untrusted network to the
trusted network except those allowed in the Port filter
configuration page.
Port Filter:
The Router allows you to specify a range of TCP or UDP ports for
connections between computers on the WAN and computers on your LAN
that is the Trusted and the Untrusted networks. These TCP or UDP ports
are entered on the Port Filter Configuration page. The Port Filter
configurations are made for both Inbound and Outbound traffic (Untrusted
to Trusted and Trusted to Untrusted).
Transport Type
- This drop-down menu allows you to specify the
transport protocol that will be filtered by the Router. You can choose from
the TCP, UDP, ICMP, IGMP, GRE, AH, ESP, and IPCOMP protocols.
Protocol
- You can select from a list of commonly used protocols from
this drop-down menu. This is the equivalent of entering the correct
Transport Type and the correct port number corresponding to a given
protocol. The difference here is that the protocol is identified by name. For
example, the Simple Mail Transfer Protocol (SMTP in the drop-down
menu) is used to send and receive e-mail. It uses the TCP transport
protocol and port number 25. This information will be entered for you, if
you select SMTP from the Protocol drop-down menu.
