334 3Com® VCX V7111 VoIP Gateway User GuideFigure 127 Example of a Host File# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.# Location: C:\WINDOWS\SYSTEM32\DRIVERS\ETC\hosts#127.0.0.1 localhost10.31.4.47 ACL_280152Secured TelnetTo enable the embedded Telnet server on the V7111 gateway, set the parameterTelnetServerEnable (described in Table 50) to 1 (standard mode) or 2 (SSL mode); noinformation is transmitted in the clear when SSL mode is used.If the Telnet server is set to SSL mode, a special Telnet client is required on your PC toconnect to the Telnet interface over a secured connection; examples include C-Kermit forUNIX, Kermit-95 for Windows, and 3Com' acSSLTelnet utility for Windows (that requiresprior installation of the free OpenSSL toolkit). Contact 3Com to obtain the acSSLTelnetutility.Server Certificate ReplacementThe V7111 gateway is supplied with a working SSL configuration consisting of a unique self-signed server certificate. If an organizational Public Key Infrastructure (PKI) is used, you maywish to replace this certificate with one provided by your security administrator.To replace the V7111 gateway self-signed certificate:1 Your network administrator should allocate a unique DNS name for the V7111 (forexample, dns_name.corp.customer.com). This name is used to access the device, andshould therefore be listed in the server certificate.2 Open the Certificates screen (Advanced Configuration menu > Security Settingssubmenu > Certificates option); the Certificates screen is displayed.
