https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439235#M76582 <P>My forwarder is unable to establish a connection over port 9997 to my indexer.</P> <P>I am running Windows, and I do not have telnet installed.</P> <P>I have access to powershell. Is there a connectivity test I can run in powershell to check to ensure traffic can be passed over TCP to a specific port? It would be 9997 in this case.</P> <P>I see the Tcpout processor has paused the flow of data as an error in the splunkd.log on the forwarder.</P> Fri, 19 Oct 2018 18:21:47 GMT jpondrom_splunk 2018-10-19T18:21:47Z https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439235#M76582 <P>My forwarder is unable to establish a connection over port 9997 to my indexer.</P> <P>I am running Windows, and I do not have telnet installed.</P> <P>I have access to powershell. Is there a connectivity test I can run in powershell to check to ensure traffic can be passed over TCP to a specific port? It would be 9997 in this case.</P> <P>I see the Tcpout processor has paused the flow of data as an error in the splunkd.log on the forwarder.</P> Fri, 19 Oct 2018 18:21:47 GMT https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439235#M76582 jpondrom_splunk 2018-10-19T18:21:47Z https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439236#M76583 <P>You can run the PowerShell equivalent command of telnet (Test-NetConnection) to test network connectivity over a certain port in windows.<BR /> The command is below.<BR /> Test-NetConnection -Port 9997 -ComputerName <BR /> Test-NetConnection -Port 9997 -ComputerName jpondromidx</P> <P>Test-NetConnection - 10.1xx.xx.xxx:9997<BR /> Attempting TCP connect<BR /> Waiting for response</P> <P>A sucess looks like the following.</P> <P>PS C:\Users\jpondromfwd&gt; Test-NetConnection -Port 9997 -ComputerName jpondromidx</P> <P>ComputerName : jpondromidx<BR /> RemoteAddress : 10.xxx.xx.xxx<BR /> RemotePort : 9997<BR /> InterfaceAlias : Wi-Fi<BR /> SourceAddress : 10.xx.xxx.xxx<BR /> TcpTestSucceeded : True</P> <P>A failed test looks like the below.</P> <P>PS C:\Users\jpondrom&gt; Test-NetConnection -Port 9997 -ComputerName jpondromidx2<BR /> WARNING: TCP connect to (10.xxx.xx.xxx : 9997) failed<BR /> ComputerName : jpondromidx2<BR /> RemoteAddress : 10.xxx.xx.xxx<BR /> RemotePort : 9997<BR /> InterfaceAlias : Wi-Fi<BR /> SourceAddress : 10.xx.xxx.xxx<BR /> PingSucceeded : True<BR /> PingReplyDetails (RTT) : 46 ms<BR /> TcpTestSucceeded : False</P> Fri, 19 Oct 2018 18:37:12 GMT https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439236#M76583 jpondrom_splunk 2018-10-19T18:37:12Z https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439237#M76584 <P>As a former Networking guy, I hate that PS by default does not show me the actual failure reason (refused/timeout/etc), but only says it fails. Adding <CODE>-Debug</CODE>, I've to press Enter 4 times before the call finishes.<BR /> If anybody knows a workaround for that mess, please let me know!</P> Sat, 20 Oct 2018 17:38:40 GMT https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439237#M76584 xpac 2018-10-20T17:38:40Z https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439238#M76585 <P>An alternative is:<BR /> New-Object System.Net.Sockets.TcpClient <HOST>, <PORT></PORT></HOST></P> Mon, 22 Oct 2018 11:05:50 GMT https://community.splunk.com/t5/Getting-Data-In/How-do-I-test-connectivity-over-a-specific-port-in-Windows/m-p/439238#M76585 jhornsby_splunk 2018-10-22T11:05:50Z