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Table 5 - Netmask Examples
Netmask Host Bits
255.255.255.252 NOT Recommended
255.255.255.248 3
255.255.255.240 4
255.255.255.224 5
255.255.255.192 6
255.255.255.128 7
255.255.255.0 8
255.255.254.0 9
255.255.252.0 10
255.255.248.0 11
255.255.240.0 12
255.255.224.0 13
255.255.192.0 14
255.255.128.0 15
255.255.0.0 16
255.254.0.0 17
255.252.0.0 18
255.248.0.0 19
255.240.0.0 20
255.224.0.0 21
255.192.0.0 22
255.128.0.0 23
255.0.0.0 24
3.13.4 Change Telnet configuration password
Setting the Telnet configuration password prevents unauthorized access of the setup menu via a Telnet
connection to port 9999 or through Web pages. The password is limited to 4 characters. An enhanced
password setting of 16 characters is available under Security Settings for Telnet access only.
NET485 User Guide 3-25