Lucent Technologies PortMaster, Руководство по настройке

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Using Internet Connections 16-11
Using ISDN for Internet Connections
If your domain name server is outside your local network, refer to “Input and Output
Filters for FTP Packets” on page 9-11.
Using ISDN for Internet Connections
Using the ISDN port on a PortMaster is very similar to using the serial port, except that
you must do the following:
• Configure the ISDN switch type as a global setting.
• Set the SPID on the port.
• Do not set the port speed, flow control, or modem control.
• Set the telephone number with the set location telephone command.
• Set the username with the set location username command.
• Set the password with the set location password command.
For more information see Chapter 12, “Using ISDN BRI,” and Chapter 8, “Configuring
Dial-Out Connections.”
6. Permits an FTP data channel back to outgoing FTP requests.
7. Permits the Domain Name Service (DNS).
8. Permits DNS zone transfers. (You might want to restrict this rule to
allow only connections to your name servers.)
9. Permits ICMP packets.
Table 16-6 Description of Internet Filter (Continued)
Rule Description