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UdpClient.AllowNatTraversal Method

Enables or disables Network Address Translation (NAT) traversal on a UdpClient instance.

Namespace:  System.Net.Sockets
Assembly:  System (in System.dll)

public void AllowNatTraversal(
	bool allowed
)

Parameters

allowed
Type: System.Boolean

A Boolean value that specifies whether to enable or disable NAT traversal.

The AllowNatTraversal method is used to enable or disable NAT traversal for a UdpClient instance. NAT traversal may be provided using Teredo, 6to4, or an ISATAP tunnel.

When the allowed parameter is false, the IPProtectionLevel option on the associated socket is set to EdgeRestricted. This explicitly disables NAT traversal for a UdpClient instance.

When the allowed parameter is true, the IPProtectionLevel option on the associated socket is set to Unrestricted. This may allow NAT traversal for a UdpClient depending on firewall rules in place on the system.

A Teredo address is an IPv6 address with the prefix of 2001::/32. Teredo addresses can be returned through normal DNS name resolution or enumerated as an IPv6 address assigned to a local interface.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4
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