All MIBs › ZTE-AN-SECURITY-L3-MIB › zxAnSecL3TcpHalfOpenDels
zxAnSecL3TcpHalfOpenDels
Module: ZTE-AN-SECURITY-L3-MIB
OID (symbolic): ZTE-AN-SECURITY-L3-MIB::zxAnSecL3TcpHalfOpenDels
OID (numeric): 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1.4
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: Deleting number of TCP half-open connections that cannot be established each time. This action will be performed automatically and periodically until zxAnSecL3TcpSynFldProtectStatus is not defence(3).
What is zxAnSecL3TcpHalfOpenDels?
This read-write integer sets how many TCP half-open connections the device deletes each time it performs its periodic SYN-flood cleanup pass while zxAnSecL3TcpSynFldProtectStatus remains at defence(3). Admins increase it to more aggressively clear a backlog of half-open connections during a severe SYN-flood attack. For example, raising zxAnSecL3TcpHalfOpenDels from the default of 1 to 10 makes each cleanup cycle purge ten half-open connections instead of just one.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1.4 snmpwalk -v2c -c public <target> ZTE-AN-SECURITY-L3-MIB::zxAnSecL3TcpHalfOpenDels
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1.4.1 snmpget -v2c -c public <target> ZTE-AN-SECURITY-L3-MIB::zxAnSecL3TcpHalfOpenDels.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1.4.1 i <value>
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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 |
| 1.3.6.1.4.1.3902 | zte | DPI-MIB |
| 1.3.6.1.4.1.3902.1082 | zxAccessNode | ZTE-AN-SMI |
| 1.3.6.1.4.1.3902.1082.70 | zxAnServiceSecurity | ZTE-AN-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.3902.1082.70.37 | zxAnSecurityL3Mib | ZTE-AN-SECURITY-L3-MIB |
| 1.3.6.1.4.1.3902.1082.70.37.2 | zxAnSecL3Objects | ZTE-AN-SECURITY-L3-MIB |
| 1.3.6.1.4.1.3902.1082.70.37.2.3 | zxAnSecL3TcpObjects | ZTE-AN-SECURITY-L3-MIB |
| 1.3.6.1.4.1.3902.1082.70.37.2.3.1 | zxAnSecL3TcpGlobalObjects | ZTE-AN-SECURITY-L3-MIB |
| 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1 | zxAnSecL3TcpSynFloodGlbObjects | ZTE-AN-SECURITY-L3-MIB |
| 1.3.6.1.4.1.3902.1082.70.37.2.3.1.1.4 | zxAnSecL3TcpHalfOpenDels | ZTE-AN-SECURITY-L3-MIB |