Using Passwords, Port Security, and Authorized IP Managers To Protect Against Unauthorized Access Using IP Authorized Managers

Additional Examples for Authorizing Multiple Stations

 

Entries for Authorized

Results

 

Manager List

 

 

 

 

 

 

 

 

IP Mask

255

255

0

255

This combination specifies an authorized IP address of 10.33.xxx.1. It could be

Authorized

10

33

248

1

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

Manager IP

 

 

 

 

 

 

 

 

fourth octet of the station’s IP address.

 

 

 

 

 

 

 

 

 

 

 

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

10

247

100

195

 

Manager IP

 

 

 

 

 

 

 

 

 

 

 

Operating and Troubleshooting Notes

■Network Security Precautions: You can enhance your network’s secu- rity by keeping physical access to the switch restricted to authorized personnel, using the password features built into the switch, and prevent- ing unauthorized access to data on your management stations.

■Modem and Direct Console Access: Configuring authorized IP manag- ers 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 authorized 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:

•Even if you need proxy server access enabled in order to use other applications, you can still eliminate proxy service for web access to the switch. To do so, add the IP address or DNS name of the switch to the non-proxy, or “Exceptions” list in the web browser interface you are using on the authorized station.

•If you don’t need proxy server access at all on the authorized station, then just disable the proxy server feature in the station’s web browser interface.

Authorized and Security,

Port Passwords, Using

IP

 

 

 

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