How to preserve SNMP trap IP address and host name when forwarding

Hi,

I need help, with preserving SNMP trap IP address and hostname when
forwarding SNMP traps through snmptrapd

I got 10 servers behind a firewall and router, I have setup SNMP trap
forwarding and GET based on community string however,
snmptrapd rewrites trap headers, IPs and host name with SNMP Proxy server
information
[image: image.png]
snmptrapd.conf  only configuration that was added
/etc/snmp/snmptrapd.conf
      authCommunity   net public
      forward  default  10.12.4.192 public


I was expecting to get trap with SRV1 information:

2019-04-10 08:52:46 SRV1.localhost  [UDP: [192.168.0.20:36670
->[X.X.X.X]:162]:
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (14866232) 1 day,
17:17:42.32  SNMPv2-MIB::snmpTrapOID.0 = OID: SNMPv2-MIB::sysName
 SNMPv2-MIB::sysName.0 = STRING: test trap from xxx

However, I am getting:

2019-04-10 08:52:46 snmp-proxy.localhost  [UDP: [192.168.0.10:36670
->[X.X.X.X]:162]:
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (14866232) 1 day,
17:17:42.32  SNMPv2-MIB::snmpTrapOID.0 = OID: SNMPv2-MIB::sysName
 SNMPv2-MIB::sysName.0 = STRING: test trap from xxx

I will appreciate any help

Thx and regards

700grm

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