Editing Test connectivity for the web service (section)

== Test connectivity from LAN to the server ==
WAN &#9675; -------&gt; <span style="color:red">&#9679; LAN -------&gt; &#9679; server</span>

Testing on LAN (local network, subnet scope): The different servers between LAN or with the same ip class (ex: 1.2.3.*) and may not have the firewall limit. [https://en.wikipedia.org/wiki/Private_network Private network] / Private IP address

* Is the service alive? 
* Connect to the internal IP eg: {{kbd | key= telnet 172.18.0.1 23}} (1) IP start with 172.18... is [http://www.itcom.itd.umich.edu/backbone/umnet/privateIP.html Private IP Network Numbers] (2) where 23 is the port number where the service running
* If the local service is web server, you can also try to connect the internal IP e.g. {{kbd | key = <nowiki>lynx http://172.18.0.1</nowiki>}} for {{Linux}}
* Double [[Testing#check_the_server.2Fservice_logs | check the server/service logs]]
* Is the internal IP correct?