7-12
Using Authorized IP Managers
Operating Notes
Additional Examples for Authorizing Multiple Stations
Operating Notes
Network Security Precautions: You can enhance your network’s
security by keeping physical access to the switch restricted to autho-
rized personnel, using the password features built into the switch, and
preventing unauthorized access to data on your management stations.
Modem and Direct Console Access: Configuring authorized IP
managers does not protect against access to the switch through a
modem or direct Console (RS-232) port connection.
Duplicate IP Addresses: If the IP address configured in an autho-
rized management station is also configured in another station, the
other station can gain management access to the switch even though
a duplicate IP address condition exists.
Web Proxy Servers: If you use the web browser interface to access
the switch from an authorized IP manager station, it is recommended
that you avoid the use of a web proxy server in the path between the
station and the switch. This is because switch access through a web
proxy server requires that you first add the web proxy server to the
Authorized Manager IP list. This reduces security by opening switch
access to anyone who uses the web proxy server. The following two
options outline how to eliminate a web proxy server from the path
between a station and the switch:
Entries for Authorized
Manager List
Results
IP Mask 255 255 0 255 This combination specifies an authorized IP address of 10.33.xxx.1. It could be
applied, for example, to a subnetted network where each subnet is defined by the
third octet and includes a management station defined by the value of “1” in the
fourth octet of the station’s IP address.
Authorized
Manager IP
10 33 248 1
IP Mask 255 238 255 250 Allows 230, 231, 246, and 247 in the 2nd octet, and 194, 195, 198, 199 in the 4th octet.
Authorized
Manager IP
10 247 100 195
!FishSecurity.book Page 12 Thursday, October 10, 2002 9:19 PM
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