Struct NatTable 

pub struct NatTable {
    pub host_ip: u32,
    pub port_mappings: Vec<NatPortMapping>,
    pub masquerade_enabled: bool,
}

NAT masquerade table for outbound SNAT and inbound port forwarding.

Fields

host_ip: u32

Host external IP address.

port_mappings: Vec<NatPortMapping>

Port mappings for inbound (DNAT).

masquerade_enabled: bool

Whether SNAT masquerade is enabled.

Implementations

impl NatTable

pub fn new(host_ip: u32) -> Self

pub fn enable_masquerade(&mut self)

Enable SNAT masquerade for outbound traffic.

pub fn add_port_mapping( &mut self, mapping: NatPortMapping, ) -> Result<(), KernelError>

Add a port mapping for inbound traffic.

pub fn remove_port_mapping(&mut self, external_port: u16, protocol: u8) -> bool

Remove a port mapping.

pub fn lookup_inbound( &self, external_port: u16, protocol: u8, ) -> Option<&NatPortMapping>

Look up a port mapping for inbound traffic.

pub fn snat_rewrite(&self, _src_ip: u32) -> Option<u32>

Apply SNAT: rewrite source IP to host IP for outbound packets.

Trait Implementations

impl Clone for NatTable

fn clone(&self) -> NatTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NatTable

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

Formats the value using the given formatter.