UDP reset timer update

Author: aimee-littleton

articles/virtual-network/nat-gateway/nat-overview.md

@@ -103,11 +103,13 @@ Virtual appliance UDR / ExpressRoute >> NAT gateway >> Instance-level public IP
 
 ### NAT gateway timers
 
-* NAT gateway holds on to SNAT ports after a connection closes before it is available to reuse to connect to the same destination endpoint over the internet. SNAT port reuse timer durations vary depending on how the connection closes. To learn more, see [Port Reuse Timers](./nat-gateway-resource.md#port-reuse-timers).
+* NAT gateway holds on to SNAT ports after a connection closes before it is available to reuse to connect to the same destination endpoint over the internet. SNAT port reuse timer durations for TCP traffic vary depending on how the connection closes. To learn more, see [Port Reuse Timers](./nat-gateway-resource.md#port-reuse-timers).
 
 * A default TCP idle timeout of 4 minutes is used and can be increased to up to 120 minutes. Any activity on a flow can also reset the idle timer, including TCP keepalives. To learn more, see [Idle Timeout Timers](./nat-gateway-resource.md#idle-timeout-timers).
 
-* UDP traffic has an idle timeout timer of 4 minutes that cannot be changed. 
+* UDP traffic has an idle timeout timer of 4 minutes that cannot be changed.
+ 
+* UDP traffic has a port reset timer of 65 seconds for which a port is in hold down before it is available for reuse to the same destination endpoint.
 
 ## Pricing and SLA
 
@@ -123,4 +125,4 @@ For information on the SLA, see [SLA for Virtual Network NAT](https://azure.micr
 
 * Learn about the [NAT gateway resource](./nat-gateway-resource.md).
 
-* [Learn module: Introduction to Azure Virtual Network NAT](/learn/modules/intro-to-azure-virtual-network-nat).
+* [Learn module: Introduction to Azure Virtual Network NAT](/learn/modules/intro-to-azure-virtual-network-nat).