SNMP Access on Ubuntu
- by javano
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?
