594.5.7.a. Telnet Access Limitation ConfigurationOn the System Security Configuration Menu, pressing "A" opens the Telnet AccessLimitation screen, as shown in Fig. 4-18. On this screen, you can configure limita-tion of equipment accessing to this Switching Hub via Telnet.PN28248 Local Management SystemSystem Security Configuration -> Telnet Access Limitation MenuTelnet Access Limitation : DisabledNo. IP Address Subnet Mask--- --------------- ---------------1 2 3 4 5 -------------------------------- -----------------------------------[E]nable/Disable Telnet Access Limitation[A]dd IP Address and Subnet Mask[D]elete IP Address and Subnet Mask[M]odify IP Address and Subnet Mask[Q]uit to previous menuCommand>Enter the character in square brackets to select optionFig. 4-18 Telnet Access Limitation ConfigurationAvailable commands are listed below.E Enable/disable the access limitation via Telnet.E Enable the access limitation.D Disable the access limitation.A Set accessible IP addresses. Five ranges can be set up.1. Press "A." The command prompt changes to "Enter IP address entry number>." Enter anIP address entry number between 1 and 5.2. The command prompt changes to "Enter IP address>." Enter an IP address to be accessi-ble.3. If the IP address is correct, the command prompt changes to "Enter subnetwork mask>."Enter a range of IP address to which you wish to permit access with mask.(Setting example)No. IP Address Subnet Mask Accessible IP Address--- ------------------ -------------------------- --------------------------------------------------1 192.168.1.10 255.255.255.255 192.168.1.10(Only one unit can be accessed)2 192.168.1.20 255.255.255.254 192.168.1.20、192.168.1.21(Two units can be accessed)3 192.168.2.1 255.255.255.128 192.168.2.1 ～ 192.168.2.127(127 units can be accessed)4 192.168.3.1 255.255.255.0 192.168.3.1 ～ 192.168.3.254(254 units can be accessed)
