All MIBs › DENIALOFSERVICE-PRIVATE-MIB › agentSwitchDenialOfServiceTCPHdrSize
agentSwitchDenialOfServiceTCPHdrSize
Module: DENIALOFSERVICE-PRIVATE-MIB
OID (symbolic): DENIALOFSERVICE-PRIVATE-MIB::agentSwitchDenialOfServiceTCPHdrSize
OID (numeric): 1.3.6.1.4.1.7244.2.31.1.3
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: Configures the Minimum allowed TCP Header size. This is active if the First Fragment Denial of Service protection feature is enabled.
What is agentSwitchDenialOfServiceTCPHdrSize?
This read-write integer, ranging from 0 to 255, sets the minimum allowed TCP header size that the switch will accept when First Fragment DoS protection is enabled. Admins tune this to reject artificially undersized TCP headers used in fragmentation-based attacks. For example, leaving this at its default of 20 (the standard minimum TCP header length) causes the switch to flag any first-fragment packet with a smaller header as an attack.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.7244.2.31.1.3 snmpwalk -v2c -c public <target> DENIALOFSERVICE-PRIVATE-MIB::agentSwitchDenialOfServiceTCPHdrSize
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.7244.2.31.1.3.1 snmpget -v2c -c public <target> DENIALOFSERVICE-PRIVATE-MIB::agentSwitchDenialOfServiceTCPHdrSize.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.7244.2.31.1.3.1 i <value>
Start monitoring Quanta enterprise/data-center switch (DoS detection) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DENIALOFSERVICE-PRIVATE-MIB::agentSwitchDenialOfServiceTCPHdrSize OID value, configure state conditions and alerts, and monitor any Quanta enterprise/data-center switch (DoS detection) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.7244 | quanta | QUANTA-SWITCH-MIB |
| 1.3.6.1.4.1.7244.2 | switch | QUANTA-SWITCH-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.7244.2.31 | denialOfService | DENIALOFSERVICE-PRIVATE-MIB |
| 1.3.6.1.4.1.7244.2.31.1 | agentSwitchDenialOfServiceGroup | DENIALOFSERVICE-PRIVATE-MIB |
| 1.3.6.1.4.1.7244.2.31.1.3 | agentSwitchDenialOfServiceTCPHdrSize | DENIALOFSERVICE-PRIVATE-MIB |