Description
SECE/4/GATEWAY_CONFLICT:OID=[oid] Gateway conflict.(SourceInterface=[OCTET], SourceIP=[OCTET], SourceMAC=[OCTET], PVLAN=[INTEGER], CVLAN=[INTEGER])
The system detects attack packets whose source IP addresses are the same as the gateway IP address.
NOTE: Only the AC6605 supports this alarm.
Attribute
| Alarm ID | Alarm Severity | Alarm Type |
|---|---|---|
| 1.3.6.1.4.1.2011.5.25.165.2.2.2.1 | Warning | equipmentAlarm(5) |
Parameters
| Name | Meaning |
|---|---|
| OID | Indicates the ID of the MIB object. |
| SourceInterface | Indicates the source interface of packets. |
| SourceIP | Indicates the source IP address of packets. |
| SourceMAC | Indicates the source MAC address of packets. |
| PVLAN | Indicates the outer VLAN ID of packets. |
| CVLAN | Indicates the inner VLAN ID of packets. |
Impact on the System
If this alarm is generated, the user gateway information may be modified by an attacker. As a result, the user is attacked and user services are interrupted.
Possible Causes
The device is attacked by packets whose source IP address is the same as the gateway IP address.
Procedure
- Find the interface where the gateway conflict occurs according to the value of SourceInterface.
- Lock the user who sends gateway conflict packets according to the values of SourceMAC and PVLAN.
- Check whether the allocated address of the user conflicts with the gateway address. If the address conflicts, allocate an address to the user again. If the address does not conflict, the user may be the attacker. In this case, you can take such measures as disconnecting the user.