Table 8: Port numbers and protocols
Port Number | Internet Application or Protocol |
|
|
7 | Echo |
|
|
21 | FTP control port |
|
|
23 | Telnet |
|
|
25 | Simple Mail Transfer Protocol (SMTP) |
|
|
53 | Domain Name Server (DNS) |
|
|
70 | Gopher |
|
|
79 | Finger |
|
|
80 | Hyper Text Transfer Protocol (HTTP) |
|
|
107 | Remote Telnet Service (RTELNET) |
|
|
110 | Post Office Protocol - Version 3 (POP3) |
|
|
119 | Network News Transfer Protocol (NNTP) |
|
|
6667 | Internet Relay Chat (IRC) |
|
|
The Help Menu
The Help Menu contains information about receive and transmit modem status messages, the firewall, installation, troubleshooting, and other topics. Review it to become familiar with the User Interface and with the DW4020. Access it by clicking on Help.
Note: Print the answer to the entry in the User Interface Troubleshooting page, “I am unable to access the DW4020 Web interface. Ping doesn’t work also.” The information on this page will help you if you cannot access the User Interface.
Figure 42: Help Menu
Chapter 3 • The User Interface
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