Avaya Business Secure Router 252 Configuration - Basics Instrukcja Użytkownika Pobierz pdf (Strona 359)

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Chapter 18 Remote management screens 359

Nortel Business Secure Router 252 Configuration — Basics

If an outside user attempts to probe an unsupported port on your Business Secure

Router, an ICMP response packet is automatically returned. This allows the

outside user to know the Business Secure Router exists. The Business Secure

Router series support antiprobing, which prevents the ICMP response packet from

being sent. This keeps outsiders from discovering your Business Secure Router

when unsupported ports are probed.

Figure 133 Security

Table 96 describes the fields in Figure 133.

Note: In order to allow Ping on the WAN, you must also configure a

WAN to WAN/ Business Secure Router rule that allows PING(ICMP:0)

traffic.

Table 96 Security

Label Description

ICMP Internet Control Message Protocol is a message control and

error-reporting protocol between a host server and a gateway to the

Internet. ICMP uses Internet Protocol (IP) datagrams, but the

messages are processed by the TCP/IP software and directly

apparent to the application user.

Respond to Ping

The Business Secure Router does not respond to any incoming Ping

requests when Disable is selected. Select LAN to reply to incoming

LAN Ping requests. Select WAN to reply to incoming WAN Ping

requests. Otherwise, select LAN & WAN to reply to both incoming

LAN and WAN Ping requests.

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