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© 2014 Stanford Research Systems
VXI Security Panel
Basic VXI-11 security measures can be configured on the VXI-11 Security Panel, which is accessed
from the VXI-11 Options tab by pressing "Security." The panel includes controls for creating a list of IP
addresses that will be allowed to connect to SR1 as well as a list of IP addresses that will be denied
access to SR1. By default, SR1 checks the allowed list first but if "Check Denied List First" is checked,
then SR1 will check the denied list first. The wildcard character (192.168.1.*) as well as explicit ranges
of addresses (192.168.1.30-55) are allowed in both lists.
As an example, to allow only a specific range of IP addresses to connect to SR1 one would specify *.*.*.
* in the denied list and the required allowed address range in the allowed range. "Check Denied List
First" should remain unchecked in this case. (Otherwise, SR1 would deny access to all IP addresses)
Alternatively to allow access to all computers except those in a specific address range one could enter
*.*.*.* in the allowed list and the range of addresses to be denied in the denied list with "Check Denied
List First" checked in this case.
The optional password is a clear text message that must be sent via VXI-11 immediately after
connecting to SR1. The user has 3 tries to enter the password after connecting before the connection is
closed by SR1. SR1 will not response to further VXI-11 commands until the correct password has been
entered.