Re: Two net-snmp machines - only one retrieves data from IBM AS/400
David Ingoldsby <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
Dave, You were absolutely right - it was iptables, running on the CentOS box. I disabled it and snmpget worked. Of course, now I have to learn about how to set up iptables properly, but that's no harm. Thanks for the help. It was really bugging me. David Ingoldsby Office +353 1 602 2396 Mobile +353 87 274 5355 [email protected] wrote on 09/12/2006 23:02:52: > On 08/12/06, David Ingoldsby <[email protected]> wrote: > > There are two machines acting as SNMP managers: > > > > 1: RedHat Enterprise Linux: net-snmp 5.1.2 installed. > > I run snmpget to 10.0.1.48: > > [root@RHEL4~]# snmpget -v 1 10.0.1.48 -c public system.sysDescr.0 > > SNMPv2-MIB::sysDescr.0 = STRING: IBM OS/400 V5R3M0 > > > > > 2: CentOS 4.4: net-snmp 5.1.2 installed. > > I run snmpget to 10.0.1.48: > > snmpget -v 1 10.0.1.48 -c public system.sysDescr.0 > > Timeout: No Response from 10.0.1.48. > > > > On rhe RHEL machine, to 10.0.1.48, there's an SNMP get-request, followed > > immediately by a get-response. > > > > On the CentOS machine, there's an SNMP get-request, followed immediately > > by a get-response, followed immediately by an ICMP to the port the > > get-response came from. > > That definitely sounds like low-level network access control. > (i.e. way below the level that Net-SNMP works at) > > > > > Wireshark on both machines sees the responses relevant to that machine, > > and neither machine is running a firewall. > > Are you sure that the CentOS machine doesn't have 'iptables' installed? > What do: > > service iptable status > chkconfig --list iptables > > return on this box? > > Dave ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users