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error of communication "syn not rcvd" with IDS 4210 sensor

IDS appliance not comunicate with the Event Viewer Agent on W2000 the error is " csids1.hal Connection 1: 192.168.1.201 45000 1 ( SynSent ) sto:5000 syn Noyt rcvd! "

I have already verify all the configuration paramiter , and all is ok .

Why not comunicate ? .

6 REPLIES
Cisco Employee

Re: error of communication "syn not rcvd" with IDS 4210 sensor

check the host id, org id, etc (all paramters) on IDS as well as CSPM/Director.

stop the deamons on IDS "nrstop" and start "nrstart"

Check on the IDS "nrstatus" if packetd is running?

Use following URL to troubleshoot further;

http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1925.htm#xtocid162254

R/Yusuf

New Member

Re: error of communication "syn not rcvd" with IDS 4210 sensor

All the configuration parameters seem ok .They are :

IP Address: 192.168.1.201

IP Netmask: 192.168.1.0 255.255.255.0

IP Host Name: sensor1

Default Route: 192.168.1.1

Allowed Hosts:

ALL:192.168.1.

Sensor Host ID: 1

Sensor Organization ID: 100

Sensor Host Name: sensor1

Sensor Organization Name: hal csids1

IDS Manager Host ID: 10

IDS Manager Organization ID: 100

IDS Manager Host Name: csids1

IDS Manager Organization Name: hal

IDS Manager IP Address: 192.168.1.101

nrstatus show this output :

Sun Microsystems Inc. SunOS 5.8 Generic February 2000

You own the console

netrangr 507 1 0 08:53:23 ? 0:01 /usr/nr/bin/nr.sapd

netrangr 506 1 0 08:53:22 ? 0:00 /usr/nr/bin/nr.loggerd

netrangr 448 1 0 08:53:18 ? 0:01 /usr/nr/bin/nr.postofficed

netrangr 508 1 0 08:53:23 ? 0:00 /usr/nr/bin/nr.fileXferd

netrangr 511 1 1 08:53:25 ? 0:14 /usr/nr/bin/nr.packetd

We have already verified further troubleshooting , but we have always the same errors :

Connection Status for sensor1.hal

csids1.hal Connection 1: 192.168.1.101 45000 1 [SynSent] sto:5000 syn NOT rcvd!

Are there any patches or fix that you know about our problem ?

Thanks , best regards .

Cisco Employee

Re: error of communication "syn not rcvd" with IDS 4210 sensor

Sounds like you need to check the configuration entries on csids1.hal, and be sure they match.

The files to check are the etc/hosts and etc/routes files in the directory where IEV is installed.

You want to check all the values in these files and check to make sure they match the exact files from the sensors. If the sensor entries are not in these files, then you need to follow the IEV instructions for configuring IEV to communicate with a sensor.

Form the IEV bin directory also try running:

"nrget 10000 10 100 1 DestinationConnectionStatus"

This is equivelant to nrconns executed on the sensor.

See if a line for the sensor shows up.

If the sensor line doesn't show up in the nrget output but is in the config files, then try rebooting the IEV box. In some situations IEV may not have read the config files because of some windows limitations.

If the line shows up with "syn NOT rcvd" for the sensor, then it may be a network issue that you will have to deal with. It could be that the sensor is not able to communicate wih the IEV because a Fireall may be blocking the communication or they may not have a route to each other. You would have to trouble shoot from a network communication standpoint.

Marco

New Member

Re: error of communication "syn not rcvd" with IDS 4210 sensor

Hi Mr.Leonard,

I am getting the same error on my IDS 4320 sensor. All the parameteres seems to be ok. when I check the connection it is giving the same error. It is running on sensor ver2.5s0.

Cisco Employee

Re: error of communication "syn not rcvd" with IDS 4210 sensor

To resolve these types of issues, first verify the network connectivity - ping the Director from the Sensor. If there is a firewall between the two devices, then verify that the PO port is allowed through (default: 45000).

If the 2 hosts can communicate, then verify that the PO configuration parameters are correct on both hosts. The host id, host name, organization name, organization id for each host should be defined identically on each host. Also verify that the correct IP addresses are being used.

New Member

Re: error of communication "syn not rcvd" with IDS 4210 sensor

Hello boys. Thanks for your aid, the problem is resolved. A parameter lacked configuration on the serveur where IEV was installed, in the files hosts and routes, in directory "Programmi\Cisco Systems\Cisco IDS Event Viewer\DataFeed\etc".

Thanks still.

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