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Quasar Scan user guide

Environment Considerations

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Table of Contents

Network ports

Quasar agents use 3 TCP ports for their connection to the server.

  • TCP 55555 (“five fives”),
  • TCP 55557 (“four-fives-seven”),
  • TCP 55559 (“four-fives-nine”)

Connections are established from the agents to the server.

Note: Quasar agents and server are backward compatible across major versions.

Anti-Virus

Quasar and its scanning process should be exempt from antivirus scrutiny.

Antivirus and application whitelisting software can interfere with Quasar. This could result in slow scans or excessive CPU use due to the way that the protection software interferes with the application and associated processes. All of the Quasar processes and associate files need to be whitelisted on your antivirus or application whitelisting solution. If the Quasar solution has not been appropriately whitelisted this can prevent the application from functioning as intended.

Exclusions:

  • Quasar Application Files
    C:\Program Files\Quasar
  • /opt/quasar
  • /Applications/Quasar Agent.app
  • Quasar Data Folders
    C:\ProgramData\QuasarScan
  • /opt/quasarscan
  • /Library/Application Support/QuasarScan/

Accounts Needed

User Accounts
WARNING: Quasar will only run under the account it is installed as.

  • Default: Localsystem on windows, root on linux and macos (for e.g. scanning drives)
  • Use a service account with appropriate access for connecting to resources like DBs, NASes, fileshares etc.

Quasar Operators
User account with remote access to the quaser server.

URL Whitelisted

Please ensure the following URLs are whitelisted where possible:

  • https://upload.quasarscan.com if using quasar-as-a-service
  • https://update.quasarscan.com if using auto-update