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Administration Guide

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Using FortiSandbox post-transfer scanning with antivirus

Using FortiSandbox post-transfer scanning with antivirus

Antivirus profiles can submit potential zero-day viruses to FortiSandbox for inspection. Based on FortiSandbox's analysis, the FortiProxy can supplement its own antivirus database with FortiSandbox's threat intelligence to detect files determined as malicious or suspicious. This augments the FortiProxy antivirus with zero-day detection.

The FortiProxy first examines the file for any known viruses. When a match is found, the file is tagged as known malware. If no match is found, the files are forwarded to FortiSandbox using the following options:

  • All Supported Files: all files matching the file types defined in the scan profile of the FortiSandbox are forwarded.

  • Suspicious Files Only: files classified by the antivirus as having any possibility of active content are forwarded to FortiSandbox. When using FortiGate Cloud Sandbox, we recommend selecting this option due to its submission limits.

  • None: files are not forwarded to FortiSandbox.

To enable FortiSandbox inspection in an antivirus profile:
  1. Go to Security Profiles > AntiVirus.
  2. Create, edit, or clone an antivirus profile.
  3. In the Inspection Options section, set Send files to FortiSandbox for inspection to either Suspicious or everything.
  4. Optionally, for Do not submit files matching types and Patterns, click the + to exclude certain file types from being sent to FortiSandbox.
  5. Optionally, for Do not submit files matching types and Patterns, click the + to enter a wildcard pattern to exclude files from being sent to FortiSandbox.
  6. Enable Use FortiSandbox Database.
  7. Click OK.

FortiProxy diagnostics

To view the detection count:
# diagnose test application quarantined 7
Total: 0

Statistics:
        vfid: 0, detected: 2, clean: 1252, risk_low: 6, risk_med: 2, risk_high: 1, limit_reached:0
To verify the address is configured correctly:
# diagnose test application quarantined 1
…
fortisandbox-fsb1 is enabled: analytics, realtime=yes, taskfull=no 
addr=172.18.52.154/514, source-ip=0.0.0.0, keep-alive=no. ssl_opt=3, hmac_alg=0
…
To run the diagnostics for real-time debugging:
# diagnose debug application quarantined -1
# diagnose debug enable
To check the FortiGate Cloud server status:
# diagnose test application forticldd 3  
…
    Active APTServer status:  up
To view FortiGate Cloud Sandbox submission statistics for advanced debugging:
# diagnose test application quarantined 2

FortiSandbox diagnostics

To run the OFTP debug for advanced debugging:
# diagnose-debug device <client serial number>
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Using FortiSandbox post-transfer scanning with antivirus

Antivirus profiles can submit potential zero-day viruses to FortiSandbox for inspection. Based on FortiSandbox's analysis, the FortiProxy can supplement its own antivirus database with FortiSandbox's threat intelligence to detect files determined as malicious or suspicious. This augments the FortiProxy antivirus with zero-day detection.

The FortiProxy first examines the file for any known viruses. When a match is found, the file is tagged as known malware. If no match is found, the files are forwarded to FortiSandbox using the following options:

  • All Supported Files: all files matching the file types defined in the scan profile of the FortiSandbox are forwarded.

  • Suspicious Files Only: files classified by the antivirus as having any possibility of active content are forwarded to FortiSandbox. When using FortiGate Cloud Sandbox, we recommend selecting this option due to its submission limits.

  • None: files are not forwarded to FortiSandbox.

To enable FortiSandbox inspection in an antivirus profile:
  1. Go to Security Profiles > AntiVirus.
  2. Create, edit, or clone an antivirus profile.
  3. In the Inspection Options section, set Send files to FortiSandbox for inspection to either Suspicious or everything.
  4. Optionally, for Do not submit files matching types and Patterns, click the + to exclude certain file types from being sent to FortiSandbox.
  5. Optionally, for Do not submit files matching types and Patterns, click the + to enter a wildcard pattern to exclude files from being sent to FortiSandbox.
  6. Enable Use FortiSandbox Database.
  7. Click OK.

FortiProxy diagnostics

To view the detection count:
# diagnose test application quarantined 7
Total: 0

Statistics:
        vfid: 0, detected: 2, clean: 1252, risk_low: 6, risk_med: 2, risk_high: 1, limit_reached:0
To verify the address is configured correctly:
# diagnose test application quarantined 1
…
fortisandbox-fsb1 is enabled: analytics, realtime=yes, taskfull=no 
addr=172.18.52.154/514, source-ip=0.0.0.0, keep-alive=no. ssl_opt=3, hmac_alg=0
…
To run the diagnostics for real-time debugging:
# diagnose debug application quarantined -1
# diagnose debug enable
To check the FortiGate Cloud server status:
# diagnose test application forticldd 3  
…
    Active APTServer status:  up
To view FortiGate Cloud Sandbox submission statistics for advanced debugging:
# diagnose test application quarantined 2

FortiSandbox diagnostics

To run the OFTP debug for advanced debugging:
# diagnose-debug device <client serial number>
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