https://community.qlik.com/t5/Official-Support-Articles/Networking-traffic-handling-in-Qlik-Sense-Client-Managed/ta-p/1848683 <H4>Environment</H4> <UL> <LI>Qlik Sense Enterprise on Windows - all versions</LI> </UL> <P><SPAN>When multiple Network Adapters are present and&nbsp;</SPAN><STRONG data-aura-rendered-by="21946:0">configured on the same subnet</STRONG><SPAN>, the OS will use the adapter with the lowest IP address first in sending traffic. This can cause Qlik Sense (and any other installed software that uses the network) to communicate over the wrong network adapter by default.&nbsp;</SPAN><BR data-aura-rendered-by="21946:0" /><BR data-aura-rendered-by="21946:0" /><SPAN>If this is not the desired traffic path, a change must be applied&nbsp;</SPAN><STRONG data-aura-rendered-by="21946:0">at the Operating System level</STRONG><SPAN>, which will affect&nbsp;</SPAN><STRONG data-aura-rendered-by="21946:0">all traffic flowing&nbsp;<I>from</I>&nbsp;that machine</STRONG><SPAN>.&nbsp;</SPAN></P> <P data-aura-rendered-by="21975:0">Assuming a Qlik Sense Enterprise server<SPAN>&nbsp;</SPAN><STRONG>with two network adapters</STRONG>, and traffic flows&nbsp;<STRONG>incorrectly</STRONG>&nbsp;through NIC 1 instead of NIC 2.&nbsp;</P> <UL data-aura-rendered-by="21975:0"> <LI>NIC 1: 10.0.0.10 -&gt; Management traffic</LI> <LI>NIC 2: 10.0.0.11 -&gt; Traffic to / from Qlik Sense</LI> </UL> <P><SPAN>Use PowerShell cmdlet&nbsp;</SPAN><A href="https://docs.microsoft.com/en-us/powershell/module/nettcpip/set-netipaddress?view=windowsserver2019-ps" target="_blank" rel="noopener" data-aura-rendered-by="21975:0">Set-NetIPAddress (NetTCPIP) | Microsoft Docs</A><SPAN>&nbsp;to configure&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">SkipAsSource</STRONG><SPAN>&nbsp;flag as follows:</SPAN><BR data-aura-rendered-by="21975:0" /><SPAN>&nbsp;</SPAN></P> <PRE class="ckeditor_codeblock" data-aura-rendered-by="21975:0">Set-NetIPAddress -IPAddress 10.0.0.10 -SkipAsSource:<STRONG>$true</STRONG> Set-NetIPAddress -IPAddress 10.0.0.11 -SkipAsSource:$false</PRE> <P><BR data-aura-rendered-by="21975:0" /><SPAN>The command above will&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">force&nbsp;outgoing</STRONG><SPAN>&nbsp;communications&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">from this host</STRONG><SPAN>&nbsp;to flow through&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">NIC 2</STRONG><SPAN>, while&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">incoming traffic&nbsp;</STRONG><SPAN>can still reach the server&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">via both NICs</STRONG><SPAN>. But&nbsp;</SPAN><STRONG data-aura-rendered-by="21975:0">outgoing traffic will always flow through NIC 2</STRONG><SPAN>.</SPAN></P> <H4>Background:</H4> <P><SPAN>Qlik Sense Client Managed (Qlik Sense Enterprise&nbsp;<STRONG data-aura-rendered-by="22004:0">for Windows</STRONG>) delegates network communications to the Operating System. If the host where Qlik Sense is installed is not correctly configured, traffic may flow throw the incorrect network adapter.&nbsp;<BR data-aura-rendered-by="22004:0" /></SPAN></P> <P><SPAN>Windows-based Operating Systems use the following convention:&nbsp;</SPAN></P> <DIV class="lia-indent-padding-left-30px" data-aura-rendered-by="22004:0"><I>When more than one Network Adapter is present&nbsp;<STRONG>and</STRONG><SPAN>&nbsp;</SPAN>all IPs are on the same subnet&nbsp;<STRONG>and</STRONG><SPAN>&nbsp;</SPAN>both adapters share the same gateway,<SPAN>&nbsp;</SPAN><STRONG>traffic will flow through</STRONG> the adapter with<STRONG> the lowest IP address </STRONG>first.&nbsp;</I></DIV> <P><SPAN><BR data-aura-rendered-by="22004:0" />Typically,&nbsp;<STRONG data-aura-rendered-by="22004:0">a secondary adapter is used for backbone or administration</STRONG>&nbsp;and is usually&nbsp;<STRONG data-aura-rendered-by="22004:0">assigned to a different subnet&nbsp;/ VLAN</STRONG>. This would negate the issue, as traffic will only be able to flow through the adapter that can correctly resolve the route to destination. User traffic would naturally not be able to flow through the Administration network adapter. This also applies to virtual addresses for&nbsp;<A href="https://docs.microsoft.com/en-us/windows-server/networking/technologies/nic-teaming/nic-teaming-settings" target="_blank" rel="noopener" data-aura-rendered-by="22004:0">NIC Teaming</A>.&nbsp;</SPAN></P> <H3 id="toc-hId--553050612" data-aura-rendered-by="22004:0">Related content:&nbsp;</H3> <P><SPAN><A href="https://community.qlik.com/t5/Knowledge/Changing-the-IP-address-of-the-Qlik-Sense-host/ta-p/1715763" target="_blank" rel="noopener" data-aura-rendered-by="22004:0">Changing the IP address of the Qlik Sense host - Qlik Community - 1715763</A><BR data-aura-rendered-by="22004:0" /><A href="https://docs.microsoft.com/en-us/powershell/module/nettcpip/set-netipaddress?view=windowsserver2019-ps" target="_blank" rel="noopener" data-aura-rendered-by="22004:0">Set-NetIPAddress (NetTCPIP) | Microsoft Docs</A>&nbsp;</SPAN></P> <P style="font-style: italic;">The information in this article is provided as-is and to be used at own discretion. Depending on tool(s) used, customization(s), and/or other factors ongoing support on the solution below may not be provided by Qlik Support.</P> <P style="font-style: italic;"><STRONG>NOTE:</STRONG> Error "<SPAN>&nbsp;too many sessions active in parallel on Qlik Sense hub" can be presented if access is pointing to the wrong Nic interface.&nbsp;</SPAN></P> Wed, 30 Mar 2022 11:09:10 GMT Mario_Petre 2022-03-30T11:09:10Z https://community.qlik.com/t5/Official-Support-Articles/Networking-traffic-handling-in-Qlik-Sense-Client-Managed/ta-p/1848683 <P><SPAN><EM>Qlik Sense Enterprise on Windows</EM> delegates communications to the Operating System. Specific routes must be configured at OS and network level for traffic to flow through the correct Network Adapter.</SPAN></P> Wed, 30 Mar 2022 11:09:10 GMT https://community.qlik.com/t5/Official-Support-Articles/Networking-traffic-handling-in-Qlik-Sense-Client-Managed/ta-p/1848683 Mario_Petre 2022-03-30T11:09:10Z