diff --git a/cheat-sheets/Fortigate-debug-diagnose-complete-cheat-sheet.adoc b/cheat-sheets/Fortigate-debug-diagnose-complete-cheat-sheet.adoc index 735befb..68ad5d3 100644 --- a/cheat-sheets/Fortigate-debug-diagnose-complete-cheat-sheet.adoc +++ b/cheat-sheets/Fortigate-debug-diagnose-complete-cheat-sheet.adoc @@ -605,10 +605,10 @@ just clear Fortigate DHCP database and will start over allocating again. You can *get \| grep alg* -|Show what is the current SIP inspection mode. If the output is `default-voip-alg-mode: proxy-based` then the full Layer 7 +|Show the current SIP inspection mode. If the output is `default-voip-alg-mode: proxy-based` then the full Layer 7 proxy SIP inspection is on (_ALG_ inspection). If the output is `default-voip-alg-mode: kernel-helper-based` then the Layer 4 _helper_ inspection is on. In both modes Fortigate does IP address translation inside SIP packets (if needed), and opens dynamically high ports for incoming media/voice streams ports. In _ALG_ mode, the Fortigate additionally does RFC compliance verification and more. So, the _ALG_ mode is more prone to cause issues but also provides more security. -|*show system session-helper | grep sip -f* +|*show system session-helper \| grep sip -f* |If using SIP _helper_ and not _ALG_, make sure there is an entry for SIP in the helpers list, usually on port 5060, but may be custom as well.