Compex-systems WPE53G Manual do Utilizador descarregar pdf (Página 150)

Page 144

You may add more firewall rules for specific security purposes. Click on the

radio button at the screen shown above, followed by the

t button.

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 and 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 in the 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 ICMP messages are

neither guaranteed to be received or transmitted.

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.

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Compex-systems WPE53G Manual do Utilizador Página 150