Setting Up Security for a Device
Switch Port Security
Access Levels
For each authorized manager address, you can configure either one of these access levels:
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Defining Authorized Management Stations
Authorizing Single Stations. Enable only one station per Authorized Manager IP parameter to access the switch (the default). To use this method, just enter the IP address of an authorized management station in the Authorized Manager IP parameter, and leave the IP Mask set to 255.255.255.255. This is the easiest way to use the Authorized Managers feature.
Authorizing Multiple Stations. Using one Authorized Manager IP parameter, enable a defined group of stations to access the switch. This is useful if you want to authorize several stations for either manager- or operator- level access to the switch. All stations in a group defined by one Authorized Manager IP parameter and its associated IP mask will have the same access
To configure the switch for authorized manager access, enter the appropriate Authorized Manager IP parameter, specify an IP Mask, and select either Manager or Operator for the Access Level. The IP Mask determines how the Authorized Manager IP parameter is used to define authorized IP addresses for management station access.
Overview of IP Mask Operation
The default IP Mask is 255.255.255.255 and allows switch access only to a station having an IP address that is identical to the Authorized Manager IP parameter. (“255” in an octet of the mask means that only the exact value in the corresponding octet of the Authorized Manager IP parameter is allowed in the IP address of an authorized management station.) However, you can alter the mask and the Authorized Manager IP parameter to specify ranges of authorized IP addresses. For example, a mask of 255.255.255.0 and any value for the Authorized Manager IP parameter allows a range of 0 through 255 in the 4th octet of the authorized IP address, which enables a block of up to 256 IP addresses for IP management access. A mask of 255.255.255.252 uses the 4th octet of a given Authorized Manager IP address to authorize four IP addresses for management station access.
