NAT-MIB :: natSessionDirection

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsNAT-MIBnatSessionDirection

natSessionDirection

Module: NAT-MIB

OID (symbolic): NAT-MIB::natSessionDirection

OID (numeric): 1.3.6.1.2.1.123.1.9.1.6

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: The direction of this session with respect to the local network. 'inbound' indicates that this session was initiated from the public network into the private network. 'outbound' indicates that this session was initiated from the private network into the public network. Deprecated in favor of NATV2-MIB.

What is natSessionDirection?

Marks whether this NAT session was 'inbound' (initiated from the public network toward the private network) or 'outbound' (initiated from inside going out) -- useful when auditing which sessions were externally-triggered versus user-initiated. Deprecated in favor of NATV2-MIB.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.123.1.9.1.6
snmpwalk -v2c -c public <target> NAT-MIB::natSessionDirection

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.123.1.9.1.6.1
snmpget -v2c -c public <target> NAT-MIB::natSessionDirection.1

Start monitoring Vendor-neutral IETF standard (NAT-capable router, firewall, or CGN appliance) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NAT-MIB::natSessionDirection OID value, configure state conditions and alerts, and monitor any Vendor-neutral IETF standard (NAT-capable router, firewall, or CGN appliance) from a single console.

OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
Numeric OIDNameModule
1.3.6.1.2.1.123natMIBNAT-MIB
1.3.6.1.2.1.123.1natMIBObjectsNAT-MIB
1.3.6.1.2.1.123.1.9natSessionTableNAT-MIB
1.3.6.1.2.1.123.1.9.1natSessionEntryNAT-MIB
1.3.6.1.2.1.123.1.9.1.6natSessionDirectionNAT-MIB