Example Use Cases

The following examples illustrate how Protocol Settings interact with firewall policies under different conditions.
For configuration steps and feature overview, see Network Settings.

• Use case 1 — Block QUIC (No Existing Manual Policy)
• Use case 2 — Block QUIC (Manual Policy Exists)
• Use case 3 — Block QUIC (With Override Policy)

Use case 1 — Block QUIC (No Existing Manual Policy) 

• No Manual Block Policy exists that blocks the QUIC protocol in Outbound Policies.
• The user enables QUIC protocol blocking in Network Settings. 

System Behavior

When the QUIC protocol is set to Blocked, the system automatically creates a block policy in Security/Firewall Policies/Outbound Policies with the following specifications :

• Permission – Block
• Name – QUIC
• Description – N/A
• Source and Destination – 0.0.0.0/0
• Protocol – UDP
• Port(s) – 443
• Path – Gateway
• Priority – N/A
• Enabled – Switch toggled on but disabled.
• Actions – Both Edit and Delete are disabled.

Reversal Behavior

• When the user unblocks the QUIC protocol in Network Settings, the System-generated Block Policy is automatically removed from the Outbound Policies table.

Use case 2 — Block QUIC (Manual Policy Exists) 

• The Manual Block Policy exists that blocks the QUIC protocol in Outbound Policies. (Same policy specifications) 
• The user enables QUIC protocol blocking in Network Settings.

System Behavior

• The Manual Block Policy is a user-managed policy that remains visible and unchanged. Users can edit or delete this policy as needed.
• The System-generated Block Policy is still displayed in the inbound policies table. Users cannot edit or delete this policy.  

Reversal Behavior

If the user disables the QUIC block in Network Settings: 

• The System-generated Block policy is removed.
• The Manual Block Policy remain unchanged.

Use case 3 — Block QUIC (With Override Policy)

• The user creates an Override Policy that allows QUIC for specific traffic.
  
• The user enables QUIC protocol blocking in Network Settings. 
  

System Behavior

• The Override Allow QUIC policy is a user-managed policy that remains visible, unchanged, and takes precedence. Users can edit or delete this policy as needed. 
• The System-generated Block Policy is still displayed in the outbound policies table. Users cannot edit or delete this policy.  
• The Policy evaluation follows this order: Allow Override Policy → System-generated Block Policy.
• The QUIC Block setting is still applied to all Adaptiv My Connect users, except where the override applies.
  

Reversal Behavior

If the user disables the QUIC block in Network Settings:

• The System-generated Block policy is removed.
• The Override Policy remain unchanged.
  
  
  

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