https://community.appian.com/discussions/f/rpa/38851/how-rpa-agent-connects-with-appianHow does RPA agent connect/communicate with orchestration server ? Is there any specific ports need to open - considering the agent is internal to company&#39;s infrastructure and the appian is in cloud..en-USTelligent Community 12https://community.appian.com/thread/146914?ContentTypeID=1Fri, 04 Apr 2025 05:13:23 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:cbf6a322-48d5-46db-bf9a-505e3d117e8dvarung120549<p>Hi <a href="/members/ravib0008">ravib0008</a>&nbsp;,<br /><br />Appian RPA uses a <strong data-start="359" data-end="399">client-initiated communication model</strong>.</p> <p>The <strong data-start="711" data-end="724">RPA Agent</strong> communicates over <strong data-start="743" data-end="763">HTTPS (port 443)</strong>.<br /><br /></p> <p class="" data-start="416" data-end="487">The <strong data-start="420" data-end="441">RPA Agent (robot)</strong> installed on your internal server or desktop:</p> <ul data-start="490" data-end="684"> <li class="" data-start="490" data-end="577"> <p class="" data-start="492" data-end="577"><strong data-start="492" data-end="520">Initiates the connection</strong> to the Appian RPA Orchestrator (hosted in Appian Cloud).</p> </li> <li class="" data-start="490" data-end="577"> <p class="" data-start="492" data-end="577">The <strong data-start="2459" data-end="2518">Appian Cloud Orchestrator uses a signed SSL certificate.</strong></p> </li> <li class="" data-start="490" data-end="577">Sends logs, status updates, and receives instructions&mdash;all over <strong data-start="665" data-end="683">outbound HTTPS</strong>.</li> </ul> <h3 class="" data-start="857" data-end="883">Ports and Protocols</h3> <div class="overflow-x-auto contain-inline-size"> <table data-start="885" data-end="1348"> <thead data-start="885" data-end="976"> <tr data-start="885" data-end="976"> <th data-start="885" data-end="904">Type</th> <th data-start="904" data-end="911">Port</th> <th data-start="911" data-end="922">Protocol</th> <th data-start="922" data-end="934">Direction</th> <th data-start="934" data-end="976">Description</th> </tr> </thead> <tbody data-start="1069" data-end="1348"> <tr data-start="1069" data-end="1164"> <td>HTTPS (Web)</td> <td>443</td> <td>TCP</td> <td>Outbound</td> <td>Required for agent to talk to Orchestrator</td> </tr> <tr data-start="1165" data-end="1256"> <td>DNS (optional)</td> <td>53</td> <td>UDP/TCP</td> <td>Outbound</td> <td>If you&#39;re using external DNS</td> </tr> <tr data-start="1257" data-end="1348"> <td>NTP (optional)</td> <td>123</td> <td>UDP</td> <td>Outbound</td> <td>For time synchronization</td> </tr> </tbody> </table> <span data-start="1354" data-end="1394">&nbsp;&nbsp;<br /></span><strong data-start="1354" data-end="1394">Only outbound connections are needed</strong> &mdash; no need to open inbound ports!<br /><br /></div> <p>You can also refer to the latest documentation for more info :&nbsp;<a id="" href="https://docs.appian.com/suite/help/25.1/rpa-9.15/rpa-system-requirements.html">https://docs.appian.com/suite/help/25.1/rpa-9.15/rpa-system-requirements.html</a><br /><br />Hope this helps you!!!</p><div style="clear:both;"></div>https://community.appian.com/thread/146910?ContentTypeID=1Fri, 04 Apr 2025 02:38:15 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8ec7920e-746f-4f22-8efa-e507462fe981Vyshnavi Naripeddi<p>this might be helpful for you: <a class="" href="https://docs.appian.com/suite/help/25.1/rpa-9.11/rpa-system-requirements.html#communication-and-port-usage" target="_new" data-start="94" data-end="200">https://docs.appian.com/suite/help/25.1/rpa-9.11/rpa-system-requirements.html#communication-and-port-usage</a></p><div style="clear:both;"></div>