I am trying to use SNMP to monitor a machine locally on its self and remotely. This is the snmpd.conf (Ubuntu
8.
04.1):
# sec.name source comunity
com2sec readonly 1.2.3.4 nicenandtight
com2sec readonly 5.6.7.
8 reallysafe
group MyROGroup v1 readonly
group MyROGroup v2c readonly
group MyROGroup usm readonly
view all included .1
view system included .iso.org.dod.internet.mgmt.mib-2.system
access MyROGroup "" any noauth exact all none none
syslocation my house
syscontact me <
[email protected]>
exec .1.3.6.1.4.1.2021.7890.1 distro /usr/bin/distro
smuxpeer .1.3.6.1.4.1.674.10892.1
includeAllDisks 95%
1.2.3.4 is the local machines IP and everything is working locally. 5.6.7.
8 is the remote machine and initially I am just trying to touch SNMPD with snmpwalk from the remote machine;
snmpwalk -v 2c -c reallysafe 1.2.3.4
Timeout: No Response from 1.2.3.4
I have added to iptables as the very first rule;
-A INPUT -p udp -m udp --dport 161 -j ACCEPT
With such a loose iptables rule I can't see why I can't even touch the SNMPD on that Uubuntu Machine. There are more specific rules further down the table but as I couldn't connect I added the above. TCPDump shows the UDP packets coming in. What could be going wrong here?
