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Hi All,
My router's Private IP is 192.168.1.1 and its VPN IP is
10.10.10.11 . My VPN server IP address is 10.10.10.1. When I run the
command " snmpwalk -v2c -c public 192.168.1.1 "
from my LAN machines it will shows the output . But When I tried to
run the same command from my VPN server it fails and shows this
message : " Timeout: No Response from 192.168.1.1 " . The
interesting thing is that if I run the command "snmpwalk -v2c -c
public 10.10.10.11 " It will give the output correctly .
I can Ping both the vpn IP and LAN IP of my router from VPN
Server(10.10.10.1) . Also I can run the commands "snmpwalk -v2c -c
public 192.168.1.1" and "snmpwalk -v2c -c public 10.10.10.11 " from
any LAN Machines .
The log I have taken with tcpdump is like the follwoing :
1. snmpwalk -v2c -c public 10.10.10.11 -- > from VPN Server
04:06:36.459388 IP 10.10.10.1.36122 > 10.10.10.11.161: C=public
GetNextRequest(25)
04:06:36.459782 IP 10.10.10.11.161 > 10.10.10.1.36122 : C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:06:36.764310 IP 10.10.10.1.36122 > 10.10.10.11.161: C=public
GetNextRequest(28) system.sysDescr.0
04:06:36.764664 IP 10.10.10.11.161 > 10.10.10.1.36122: C=public
GetResponse(38) system.sysObjectID.0=E:8072.3[|snmp]
04:06:37.068358 IP 10.10.10.1.36122 > 10.10.10.11.161: C=public
GetNextRequest(28) system.sysObjectID.0
04:06:37.068686 IP 10.10.10.11.161 > 10.10.10.1.36122: C=public
GetResponse(31) system.sysUpTime.0=232068
04:06:37.372605 IP 10.10.10.1.36122 > 10.10.10.11.161: C=public
GetNextRequest(28) system.sysUpTime.0
etc.
2. Following is the full log of snmpwalk -v2c -c public 192.168.1.1
-- > From the VPN Server
04:13:32.859163 IP 10.10.10.1.36222 > 192.168.1.1.161: C=public
GetNextRequest(25)
04:13:32.859563 IP 10.10.10.11.161 > 10.10.10.1.36222: C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:13:33.859700 IP 10.10.10.1.36222 > 192.168.1.1.161: C=public
GetNextRequest(25)
04:13:33.860097 IP 10.10.10.11.161 > 10.10.10.1.36222: C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:13:34.859747 IP 10.10.10.1.36222 > 192.168.1.1.161: C=public
GetNextRequest(25)
04:13:34.860160 IP 10.10.10.11.161 > 10.10.10.1.36222: C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:13:35.860531 IP 10.10.10.1.36222 > 192.168.1.1.161: C=public
GetNextRequest(25)
04:13:35.860949 IP 10.10.10.11.161 > 10.10.10.1.36222: C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:13:36.860572 IP 10.10.10.1.36222 > 192.168.1.1.161: C=public
GetNextRequest(25)
04:13:36.860988 IP :10.10.10.11.161 > 10.10.10.1.36222 C=public
GetResponse(91) system.sysDescr.0=[|snmp]
04:13:37.860840 IP 10.10.10.1.36222 > 192.168.1.1.161 : C=public
GetNextRequest(25)
04:13:37.861252 IP10.10.10.11.161 > 10.10.10.1.36222 : C=public
GetResponse(91) system.sysDescr.0=[|snmp]
Is there is any other Configuration I want to do for getting SNMP data
from the LAN IP of the router ? Please help me if somebody have
previous issues like this .
Thanks,
Abhilash.S
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