Modify a SubVS
- Last Updated: December 5, 2025
- 2 minute read
- LoadMaster
- LoadMaster LTSF
- Documentation
Following on from the Add/Modify/Delete a SubVS section, continue with the steps below:
- Expand the SubVSs section.

- Click Modify.
When the Modify button is clicked a configuration screen for the SubVS appears. This contains a subset of the configuration options that a normal Virtual Service has.
- For a description of SubVS specific fields, refer to the SubVS WUI Options section.
- For a description of the other (non-SubVS specific) fields and options, refer to the Web User Interface (WUI) Configuration Guide.
- For steps on how to configure a Virtual Service, refer to the Virtual Services and Templates Feature Description.
Note: When a SubVS is added to a Virtual Service, the Transparency setting on the Virtual Service is enabled
and cannot be changed. This is because the Virtual Service forwards the client
request transparently to the SubVS. The Transparency
setting on the SubVS can be enabled or disabled as required.
Note: The SSL Acceleration and Reencrypt options must be set in the parent Virtual
Service, not in the SubVS. If these options are enabled, data is decrypted, then
passed to the SubVS and re-encrypted on the way out of the SubVS.
Note: For Exchange, Progress Kemp recommends that the Edge Security
Pack (ESP) and Web Application Firewall (WAF) is not enabled on the parent service but instead is
enabled in the SubVSs.
Note: When using SNMP monitoring of ESP-enabled Virtual Services that
were created using a template, ensure to monitor each SubVS directly rather than
relying on the master service. This is because the Authentication Proxy
sub-service will always be marked as up and, as a consequence, so will the
master service.