All MIBs › CLAVISTER-MIB › clvSysPscTcpSyn
clvSysPscTcpSyn
Module: CLAVISTER-MIB
OID (symbolic): CLAVISTER-MIB::clvSysPscTcpSyn
OID (numeric): 1.3.6.1.4.1.5089.1.2.1.6.1
Node type: OBJECT-TYPE
Type: Gauge32
Access: read-only
Description: Number of TCP connections in the SYN state.
What is clvSysPscTcpSyn?
This read-only gauge reports how many TCP connections tracked by the firewall are currently in the SYN (handshake-initiated but not established) state. A high or rapidly rising count here is a classic signature of a SYN flood attack against hosts behind the firewall. For example, an admin seeing clvSysPscTcpSyn spike sharply would investigate for a SYN-flood-style denial-of-service attempt.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.5089.1.2.1.6.1 snmpwalk -v2c -c public <target> CLAVISTER-MIB::clvSysPscTcpSyn
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.5089.1.2.1.6.1.1 snmpget -v2c -c public <target> CLAVISTER-MIB::clvSysPscTcpSyn.1
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OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.5089 | clavister | CLAVISTER-SMI |
| 1.3.6.1.4.1.5089.1 | clavisterOS | CLAVISTER-SMI |
| 1.3.6.1.4.1.5089.1.2 | clavisterOSStats | CLAVISTER-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.5089.1.2.1 | clvSystem | CLAVISTER-MIB |
| 1.3.6.1.4.1.5089.1.2.1.6 | clvSysPerStateCounters | CLAVISTER-MIB |
| 1.3.6.1.4.1.5089.1.2.1.6.1 | clvSysPscTcpSyn | CLAVISTER-MIB |