<![CDATA[Cannot connect agent]]>Hi,

I have the following situation - I installed NetXMS agent on server which is located in remote site without proxy enabled. There is another NetXMS agent who is working like a proxy. So, from console I when i poll proxy everything is like it should be (agent found), but when i poll the new agent I get:

[04.11.2013 14:05:45] **** Poll request sent to server ****
[04.11.2013 14:05:45] Poll request accepted
[04.11.2013 14:05:45] Starting configuration poll for node 192.168.0.5
[04.11.2013 14:05:45] Checking node's capabilities...
[04.11.2013 14:05:45]    Checking NetXMS agent...
[04.11.2013 14:05:46]    Checking SNMP...
[04.11.2013 14:07:46] POLL ERROR: Request timed out[04.11.2013 14:07:46] **** Poll failed ****

[04.11.2013 14:24:41] **** Poll request sent to server ****
[04.11.2013 14:24:41] Poll request accepted
[04.11.2013 14:24:41] Starting configuration poll for node 192.168.0.5
[04.11.2013 14:24:41] Checking node's capabilities...
[04.11.2013 14:24:41]    Checking NetXMS agent...
[04.11.2013 14:24:50] Capability check finished
[04.11.2013 14:24:50] Checking interface configuration...
[04.11.2013 14:24:50] Unable to get interface list from node
[04.11.2013 14:24:50]    Interface "unknown" is no longer exist
[04.11.2013 14:24:50] Interface configuration check finished
[04.11.2013 14:24:50] Checking node name
[04.11.2013 14:24:50] Syncing node name with DNS
[04.11.2013 14:24:59] Finished configuration poll for node ServerFTP
[04.11.2013 14:24:59] Node configuration was not changed after poll
[04.11.2013 14:24:59] **** Poll completed successfully ****

The device does respond to icmp pings and agent is running.

There is even some communication between the proxy and the agent:

root@metrumftp:~# tcpdump -i any port 4700
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
14:16:44.697975 IP 192.168.0.5.55781 > 192.168.0.4.4700: S 1847646415:1847646415(0) win 14600 <mss 1460,sackOK,timestamp 369447284 0,nop,wscale 6>
14:16:44.698003 IP 192.168.0.4.4700 > 192.168.0.5.55781: S 1883842181:1883842181(0) ack 1847646416 win 5792 <mss 1460,sackOK,timestamp 1363491413 369447284,nop,wscale 6>
14:16:44.698111 IP 192.168.0.5.55781 > 192.168.0.4.4700: . ack 1 win 229 <nop,nop,timestamp 369447284 1363491413>
14:16:44.698309 IP 192.168.0.4.4700 > 192.168.0.5.55781: F 1:1(0) ack 1 win 91 <nop,nop,timestamp 1363491413 369447284>
14:16:44.698438 IP 192.168.0.5.55781 > 192.168.0.4.4700: . ack 2 win 229 <nop,nop,timestamp 369447284 1363491413>
14:16:44.798277 IP 192.168.0.5.55781 > 192.168.0.4.4700: F 1:1(0) ack 2 win 229 <nop,nop,timestamp 369447309 1363491413>
14:16:44.798289 IP 192.168.0.4.4700 > 192.168.0.5.55781: . ack 2 win 91 <nop,nop,timestamp 1363491423 369447309>
14:16:58.582404 IP 192.168.0.5.55782 > 192.168.0.4.4700: S 2718119023:2718119023(0) win 14600 <mss 1460,sackOK,timestamp 369450754 0,nop,wscale 6>
14:16:58.582433 IP 192.168.0.4.4700 > 192.168.0.5.55782: S 2098537924:2098537924(0) ack 2718119024 win 5792 <mss 1460,sackOK,timestamp 1363492802 369450754,nop,wscale 6>
14:16:58.582544 IP 192.168.0.5.55782 > 192.168.0.4.4700: . ack 1 win 229 <nop,nop,timestamp 369450754 1363492802>
14:16:58.582698 IP 192.168.0.4.4700 > 192.168.0.5.55782: F 1:1(0) ack 1 win 91 <nop,nop,timestamp 1363492802 369450754>
14:16:58.582809 IP 192.168.0.5.55782 > 192.168.0.4.4700: . ack 2 win 229 <nop,nop,timestamp 369450754 1363492802>
14:16:58.682761 IP 192.168.0.5.55782 > 192.168.0.4.4700: F 1:1(0) ack 2 win 229 <nop,nop,timestamp 369450779 1363492802>

Server debug shows, that Communication with agent 192.168.0.4 failed (Connection broken).

I'm stuck here and can't find the solution to this. If i need to provide more information, just tell.
Any help would be appreciated.

Thanks in advance,
Nikk

]]>https://forum.netxms.org/topic/2703/cannot-connect-agentRSS for NodeFri, 13 Nov 2026 14:00:55 GMTMon, 04 Nov 2013 13:08:22 GMT60<![CDATA[Reply to Cannot connect agent on Mon, 04 Nov 2013 17:59:58 GMT]]>Such a stupid mistake, thank you for guiding me in right direction 🙂

Nikk

]]>https://forum.netxms.org/post/11700https://forum.netxms.org/post/11700Mon, 04 Nov 2013 17:59:58 GMT<![CDATA[Reply to Cannot connect agent on Mon, 04 Nov 2013 15:50:32 GMT]]>You should use IP address of proxy agent in MasterServers parameter on destination agent, because destnation agent will receive connection from proxy agent's IP address.

Best regards,
Victor

]]>https://forum.netxms.org/post/11699https://forum.netxms.org/post/11699Mon, 04 Nov 2013 15:50:32 GMT<![CDATA[Reply to Cannot connect agent on Mon, 04 Nov 2013 14:54:10 GMT]]>Here is the proxy config:

#
# Sample configuration file for NetXMS agent

EnableWatchdog = yes

MasterServers = Our_external_address
LogFile = {syslog}
LogFile = /var/log/nxagentd.log
EnableProxy = yes
EnableSNMPProxy = yes

SubAgent = /usr/local/lib/netxms/portcheck.nsm
SubAgent = /usr/local/lib/netxms/ping.nsm
SubAgent = /usr/local/lib/netxms/linux.nsm
SubAgent = /usr/local/lib/netxms/logwatch.nsm

And the agents config:

MasterServers = Our_external_address
LogFile = {syslog}
LogFile = /var/log/nxagentd.log
CreateCrashDumps = yes
DumpDirectory = /var/log/nxagentdump

SubAgent = /usr/local/lib/netxms/portcheck.nsm
SubAgent = /usr/local/lib/netxms/ping.nsm
SubAgent = /usr/local/lib/netxms/linux.nsm
SubAgent = /usr/local/lib/netxms/ecs.nsm
SubAgent = /usr/local/lib/netxms/logwatch.nsm
SubAgent = /usr/local/lib/netxms/sms.nsm

EnableWatchdog = yes

Thanks in advance,
Nikk

]]>https://forum.netxms.org/post/11698https://forum.netxms.org/post/11698Mon, 04 Nov 2013 14:54:10 GMT<![CDATA[Reply to Cannot connect agent on Mon, 04 Nov 2013 14:15:24 GMT]]>Can you show me configs for both agents?

Best regards,
Victor

]]>https://forum.netxms.org/post/11697https://forum.netxms.org/post/11697Mon, 04 Nov 2013 14:15:24 GMT