Test Oneclick Webapp port availability without telnet.

Products

• Network Observability

Issue/Introduction

You built a new lab environment and installed Spectrum but launching the webapp shows a blank page.
Troubleshooting makes it seem like a firewall issue:

• You can access the OneClick web administration page and launch Java clients.
• There is no response seen in webswing.log when we launch the webapp.
• No requests in the webapp localhost.log.
• Accessing the WebTomact directly via url also fails to connect.

The firewall team insist that there are no firewalls in this environment but you cannot use telnet to verify if this is correct.

Resolution

Shut down tomcat and webtomcat services.

From $SPECROOT/webtomcat/conf/server.xml, swap the tomcat and webtomcat ports.  e.g. if tomcat runs on 8080 and webtomcat on 9443, we swapped 9443 for 8080 in this file.

Start the webtomcat server (Do NOT start the Tomcat service).

Yest accessing webtocat vie browser at http://<Oneclick server host>:9443/spectrum

If you are now able to connect to the Webswing admin page, then communication on 9443 is blocked.

Additional Information

A trace route commend from the pc launching the Webapp client to the OneClick server, will list all the hops in this path.  Pass this information to the firewall tam to verify if any of these are firewalls and do they have the required ports opened.