Avaya BCM 4.0 Networking Przewodnik Konfiguracji Pobierz pdf (Strona 628)

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628 Chapter 67 Configuring IP Filter Rules

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Basic (stateless) Packet Filter

BCM supports basic (or stateless) packet filtering for IP protocols. Stateless packet filtering

examines each packet and determines whether or not to pass it through based on the rules entered.

No state is maintained for packets evaluated using stateless rules.

Basic Packet Filters are configured by clearing the Stateful check box on the Add or Modify filter

rules dialog boxes.

For more information, refer to “Stateful Packet Filters” on page 723.

IP Filters and NAT

When you use NAT and IP Filters, there are two interactions you need to be aware of.

• On inbound traffic, the NAT rules are applied before the IP Firewall Filter rules.

• On outbound traffic, the IP Firewall Filter rules are applied before the NAT rules.

Adding an Inbound filter rule

To add an inbound filter

1 Click the Inbound Filter Rule tab.

The Inbound Filter Rule details panel appears.

2 Click Add.

The Add Inbound Filter Rule dialog box appears. See Figure 204.

3 Configure the Inbound Filter Rule settings. Refer to the information in Table 154.

4 Click OK.

Note: Add the rule in Table 158 to ensure access to the Element Manager is not blocked.

To allow access for SSH, you must set the filters to allow the flow of packets to the SSH

port (port 22).

To allow access for Telnet, you must set the filters to allow the flow of packets to the

Telnet port (port 23).

To allow access for FTP, you must set the filters to allow the flow of packets to the FTP

port (port 20)

Note: To mark inbound packets the stateful check box must be selected. Refer

to “Stateful Packet Filters” on page 723 for more information.

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