Enum NatType

pub enum NatType {
    UdpBlocked,
    OpenInternet,
    SymmetricUdpFirewall,
    FullCone,
    RestrictedCone,
    PortRestrictedCone,
    Symmetric,
    Unknown,
}

Variants

UdpBlocked

UDP is always blocked.

OpenInternet

No NAT, public IP, no firewall.

SymmetricUdpFirewall

No NAT, public IP, but symmetric UDP firewall.

FullCone

A full cone NAT is one where all requests from the same internal IP address and port are mapped to the same external IP address and port. Furthermore, any external host can send a packet to the internal host, by sending a packet to the mapped external address.

RestrictedCone

A restricted cone NAT is one where all requests from the same internal IP address and port are mapped to the same external IP address and port. Unlike a full cone NAT, an external host (with IP address X) can send a packet to the internal host only if the internal host had previously sent a packet to IP address X.

PortRestrictedCone

A port restricted cone NAT is like a restricted cone NAT, but the restriction includes port numbers. Specifically, an external host can send a packet, with source IP address X and source port P, to the internal host only if the internal host had previously sent a packet to IP address X and port P.

Symmetric

A symmetric NAT is one where all requests from the same internal IP address and port, to a specific destination IP address and port, are mapped to the same external IP address and port. If the same host sends a packet with the same source address and port, but to a different destination, a different mapping is used. Furthermore, only the external host that receives a packet can send a UDP packet back to the internal host.

Unknown

Unknown

Implementations

impl NatType

pub fn weight(&self) -> usize

Trait Implementations

impl Clone for NatType

fn clone(&self) -> NatType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NatType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for NatType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for NatType

fn eq(&self, other: &NatType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for NatType

impl Eq for NatType

impl StructuralPartialEq for NatType