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Home Documentation Junos OS Junos CLI Reference CLI Reference N

Junos CLI Reference

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Junos CLI Reference
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nat

date_range 13-Jun-24
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Syntax

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nat {
    destination {
        pool pool-name {
            address ip-address {
                (port port-number | to ip-address);
            }
            description text;
            routing-instance routing-instance-name;
        }
        rule-set rule-set-name {
            description text;
            from {
                interface [interface-name];
                routing-instance [routing-instance-name];
                zone [zone-name];
            }
            rule rule-name {
                description text;
                match {
                    (destination-address <ip-address> | destination-address-name <address-name>);
                    destination-port port-number;
                    protocol [protocol-name-or-number];
                    source-address [ip-address];
                    source-address-name [address-name];
                }
                then {
                    destination-nat (off | pool pool-name);
                }
            }
        }
    }
    proxy-arp {
        interface interface-name {
            address ip-address {
                to ip-address;
            }
        }
    }
    proxy-ndp {
        interface interface-name {
            address ip-address {
                to ip-address;
            }
        }
    }
    natv6v4 {
        no-v6-frag-header;
    }
    source {
        address-persistent;
        interface {
            port-overloading { 
                off;
            }
        }
        pool pool-name {
            address ip-address {
                to ip-address;
            }
            description text;
            host-address-base ip-address;
            overflow-pool (interface | pool-name);
            port {
                (no-translation | port-overloading-factor number | range port-low <to port-high>);
            }
            routing-instance routing-instance-name;
        }
        pool-default-port-range lower-port-range to upper-port-range;
        pool-utilization-alarm {
            clear-threshold value;
            raise-threshold value;
        }
        port-randomization {
            disable;
        }
        port-round-robin {
            disable;
        }
        port-scaling-enlargement;
        radius-accounting {
            session-drop;
        }
        rule-set rule-set-name {
            description text;
            from {
                interface [interface-name];
                routing-instance [routing-instance-name];
                zone [zone-name];
            }
            rule rule-name {
                description text;
                match {
                    (destination-address <ip-address> | destination-address-name <address-name>);
                    destination-port port-number;
                    protocol [protocol-name-or-number];
                    source-address [ip-address];
                    source-address-name [address-name];
                }
                then {
                    source-nat {
                        interface {
                            persistent-nat {
                                address-mapping;
                                inactivity-timeout seconds;
                                max-session-number value;
                                permit (any-remote-host | target-host | target-host-port);
                            }
                        }
                        off;
                        pool {
                             persistent-nat {
                                 address-mapping;
                                inactivity-timeout seconds;
                                max-session-number number;
                                permit (any-remote-host | target-host | target-host-port);
                             }
                             pool-name;
                        }
                    }
                }
            }
            to {
                interface [interface-name];
                routing-instance [routing-instance-name];
                zone [zone-name];
            }
        }
        session-persistence-scan;
        subscriber-extension;
    }
    static {
        rule-set rule-set-name {
            description text;
            from {
                interface [interface-name];
                routing-instance [routing-instance-name];
                zone [zone-name];
            }
            rule rule-name {
                description text;
                match {
                    (destination-address ip-address | destination-address-name address-name);
                }
                then {
                    static-nat {
                        inet {
                            routing-instance (default | routing-instance-name);
                        }
                        prefix {
                            address-prefix;
                            routing-instance (default | routing-instance-name);
                        }
                        prefix-name {
                            address-prefix-name;
                            routing-instance (default | routing-instance-name);
                        }
                    }
                }
            }
        }
    }
    traceoptions {
        file {
            filename;
            files number;
            match regular-expression;
            size maximum-file-size;
            (world-readable | no-world-readable);
        }
        flag flag;
        no-remote-trace;
    }
}

Hierarchy Level

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[edit security]
[edit tenants tenant-name security]

Description

Configure Network Address Translation (NAT) for NFX Series and SRX Series Firewalls.

Options

destination

Configure Destination NAT.

natv6v4

Configure NAT between IPv6 and IPv4 options.

no-v6-frag-header Configure to disable adding fragment header in non-fragmented IPv6 packets when performing IPv4 to IPv6 translation.
proxy-arp

Configure Proxy ARP.

proxy-ndp

Configure Proxy NDP.

source

Configure Source NAT.

static

Configure Static NAT.

traceoptions

Configure NAT traceoptions.

Required Privilege Level

security—To view this statement in the configuration.

security-control—To add this statement to the configuration.

Release Information

Statement modified in Junos OS Release 9.6.

The description option added in Junos OS Release 12.1.

The tenant option is introduced in Junos OS Release 18.3R1.

The radius-accounting and subscriber-extension options are introduced in Junnos OS Release 24.2R1.

Related Documentation

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