Lantronix EMG 8500 EMG User Guide - Page 218

10: Device Ports Dial-back Number Dial-back Delay Dial-back Retries Users with Dial-back can dial into the EMG unit and enter their login and password. Once the EMG unit authenticates them, the modem hangs up and dials them back . Select the phone number the modem dials back on: a fixed number or a number associated with their login. If you select Fixed Number, enter the number (in the format 2123456789). The dial-back number is also used for CBCP client as the number for a userdefined number. See CBCP Server and CBCP Client for more information. For dial-back and CBCP Server, the number of seconds between the dial-in and dial-out portions of the dialing sequence. For dial-back and CBCP Server, the number of times the EMG unit will retry the dial-out portion of the dialing sequence if the first attempt to dial-out fails. Text Mode Timeout Logins If you selected text mode, you can enable logins to time out after the connection is inactive for a specified number of minutes. The default is No. This setting only applies to text mode connections. PPP mode connections stay connected until either side drops the connection. Disabled by default. PPP Mode Negotiate IP Address Authentication CHAP Handshake CHAP Auth Uses Enable NAT Dial-out Number Remote/Dial-out Login If the EMG and/or the serial device have dynamic IP addresses (e.g., IP addresses assigned by a DHCP server), select Yes. This is the default. If the EMG unit or the modem have fixed IP addresses, select No, and enter the Local IP (IP address of the internal modem) and Remote IP (IP address of the modem). Enables PAP or CHAP authentication for modem logins. PAP is the default. With PAP, users are authenticated by means of the Local Users and any of the remote authentication methods that are enabled. With CHAP, the CHAP Handshake fields authenticate the user. The Host/User Name (for UNIX systems) or Secret/User Password (for Windows systems) used for CHAP authentication. May have up to 128 characters. For CHAP authentication, determines what is used to validate the CHAP host/ user sent by the remote peer: either the CHAP Host defined for the modem, or any of the users in the Local Users list. Select to enable Network Address Translation (NAT) for dial-in and dial-out PPP connections on a per modem (device port, USB port, or internal modem) basis. Users dialing into the EMG unit access the network connected to Eth1 and/or Eth2. Note: IP forwarding must be enabled on the Network Settings (on page 66) for NAT to work. Phone number for dialing out to a remote system or serial device. May have up to 20 characters. Any format is acceptable. User ID for authentication when dialing out to a remote system, or if a remote system requests authentication from the EMG module when it dials in. May have up to 32 characters. EMG™ Edge Management Gateway User Guide 218