Compex NetPassage WP18 Specifications download pdf (Page 84)

5. More firewall rules can be added for specific security purposes.

Rule Name : Enter a unique name to identify this firewall rule.

Disposition

Policy

: This parameter determines whether the packets obeying the rule

should be accepted or denied by the firewall.

Choose between Accept, or Deny.

Protocols : Users are allowed to select the type of data packet from: TCP, UDP,

ICMP, IGMP, or ALL.

Note: If users select either ICMP or IGMP, they are required to make

further selection on ICMP Types or IGMP Types respectively.

ICMP Types

: This IP protocol is used to report errors in IP packet routing.

ICMP serves as a form of flow control, although the receiving and

transmitting of ICMP messages is not guaranteed.

ICMP Packet Type Description

Echo request Determines whether an IP node (a host or

a router) is available on the network.

Echo reply Replies to an ICMP echo request.

Destination

unreachable

Informs the host that a datagram cannot

be delivered.

Source quench Informs the host to lower the rate at which

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Compex NetPassage WP18 Specifications Page 84