Set the property to true to prevent bad actors from using internal port scanning in your network.

If the glide.update_set.remote.check_host property is not set to the recommended value of true, then the remote instance test feature will allow internal port scanning which is a method bad actors can use to discover vulnerabilities in a network. It is then possible to enumerate all open ports on a given host, and in some cases pull response data which could lead to information leakage or unauthorized data access.
Warning: This is a safe harbor property, meaning the value can't be altered once it's changed. It is non-revertible.

More information

Attribute Description
Configuration name glide.update_set.remote.check_host
Configuration type System Properties (/sys_properties_list.do)
Data type Boolean
Recommended value true
Default value true
Category Business Logic
Security risk
  • Severity score: 6.3
  • CVSS score: Medium
  • Security risk details: Not setting property to the recommended value of true could enable bad actors to use internal port scanning to gain access to unauthorized data.
Dependencies and prerequisites None
References

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0755132

Define a remote instance