pub struct IptablesManager;Expand description
Manages the lifecycle of iptables rules used by natmap.
Creates the NATMAP chain in both the nat and filter tables,
inserts jumps from PREROUTING and DOCKER-USER, and provides
methods to install/remove individual rules.
Implementations§
Source§impl IptablesManager
impl IptablesManager
Sourcepub fn new() -> Self
pub fn new() -> Self
Creates a new IptablesManager.
Sourcepub fn setup(&self) -> Result<()>
pub fn setup(&self) -> Result<()>
Creates the NATMAP chains and inserts jump rules.
Operates on both iptables (IPv4) and ip6tables (IPv6).
This method is idempotent.
Sourcepub fn install_dockermap(&self, map: &DockerPortMap) -> Result<()>
pub fn install_dockermap(&self, map: &DockerPortMap) -> Result<()>
Installs DNAT, FORWARD ACCEPT, MASQUERADE, and OUTPUT DNAT rules for a Docker mapping.
Sourcepub fn flush_all_natmap(&self) -> Result<()>
pub fn flush_all_natmap(&self) -> Result<()>
Flushes and deletes the NATMAP chains and removes all natmap-commented
rules from POSTROUTING, OUTPUT, PREROUTING, and FORWARD in both
iptables (IPv4) and ip6tables (IPv6).
Used during crash recovery and clean shutdown to reset all natmap-managed rules.
Sourcepub fn install_dnat(&self, config: &DnatConfig) -> Result<()>
pub fn install_dnat(&self, config: &DnatConfig) -> Result<()>
Installs a static DNAT rule (PREROUTING + FORWARD ACCEPT).
Sourcepub fn remove_dnat(&self, config: &DnatConfig) -> Result<()>
pub fn remove_dnat(&self, config: &DnatConfig) -> Result<()>
Removes a static DNAT rule (PREROUTING + FORWARD ACCEPT).
Uses the rule comment to find and delete matching rules.
Sourcepub fn install_snat(&self, config: &SnatConfig) -> Result<()>
pub fn install_snat(&self, config: &SnatConfig) -> Result<()>
Installs a static SNAT (source NAT) rule in the POSTROUTING chain.
Sourcepub fn remove_snat(&self, config: &SnatConfig) -> Result<()>
pub fn remove_snat(&self, config: &SnatConfig) -> Result<()>
Removes a static SNAT rule from the POSTROUTING chain.
Uses the rule comment to find and delete matching rules.
Sourcepub fn install_hairpin(&self, config: &HairpinConfig) -> Result<()>
pub fn install_hairpin(&self, config: &HairpinConfig) -> Result<()>
Installs a hairpin NAT rule.
When config.lan_cidr is set:
- Skips the PREROUTING DNAT (service node self-connections go through the regular DNAT rule instead).
- Uses
lan_cidras the MASQUERADE source match, limiting hairpin to LAN clients only (preserving source IP for WAN clients).
When lan_cidr is None, creates the full hairpin (PREROUTING DNAT +
POSTROUTING MASQUERADE with -s 0.0.0.0/0).
Sourcepub fn remove_hairpin(&self, config: &HairpinConfig) -> Result<()>
pub fn remove_hairpin(&self, config: &HairpinConfig) -> Result<()>
Removes a hairpin NAT rule (PREROUTING DNAT + POSTROUTING MASQUERADE).
Uses the rule comment to find and delete matching rules.
Sourcepub fn remove_mapping(&self, map: &DockerPortMap) -> Result<()>
pub fn remove_mapping(&self, map: &DockerPortMap) -> Result<()>
Removes all iptables rules associated with a Docker mapping by its rule comment.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for IptablesManager
impl RefUnwindSafe for IptablesManager
impl Send for IptablesManager
impl Sync for IptablesManager
impl Unpin for IptablesManager
impl UnsafeUnpin for IptablesManager
impl UnwindSafe for IptablesManager
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