ZyXEL Communications Corporation VSG1435B101 Manual De Usuario

 Chapter 16 Firewall

VSG1435-B101 Series User’s Guide

Select Protocol

Select the transport layer protocol that defines your customized port 
from the drop-down list box. The specific protocol rule sets you add in 
the Security Settings > Firewall > Protocol > Add screen display 
in this list. 

If you want to configure a customized protocol, select Specific 
Protocol.

Protocol

This field is displayed only when you select Specific Protocol in 
Select Protocol.

Choose the IP port (TCP/UDP, TCP, UDP, or ICMP) that defines your 
customized port from the drop-down list box.

Custom Source 
Port

This field is displayed only when you select Specific Protocol in 
Select Protocol.

Enter a single port number or the range of port numbers of the source.

Custom 
Destination Port

This field is displayed only when you select Specific Protocol in 
Select Protocol.

Enter a single port number or the range of port numbers of the 
destination.

Policy

Use the drop-down list box to select whether to discard (DROP), deny 
and send an ICMP destination-unreachable message to the sender of 
(REJECT) or allow the passage of (ACCEPT) packets that match this 
rule.

Direction 

Use the drop-down list box to select the direction of traffic to which 
this rule applies.

Enable Rate Limit Select this check box to set a limit on the upstream/downstream 

transmission rate for the specified protocol.

Specify how many packets per minute or second the transmission rate 
is.

Scheduler Rules

Select a schedule rule for this ACL rule form the drop-down list box. 
You can configure a new schedule rule by click Add new rule. This 
will bring you to the Security Settings > Scheduler Rules screen.

Apply

Click Apply to save your changes.

Cancel

Click Cancel to exit this screen without saving.

Table 69   Security Settings > Firewall > Access Control > Add/Edit (continued)