https://community.checkpoint.com/t5/Firewall-and-Security-Management/problem-with-VoIP-and-video-after-one-hour/m-p/82990#M11398 <P>Has anyone experience with&nbsp;<A href="https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&amp;solutionid=sk113749" target="_blank" rel="noopener">H.323 VoIP call drops after exactly one hour because Keep Alive "ACK" packets are not forwarded to the VoIP client</A>&nbsp;</P> <P>We had the described problem, solution does not work and I want to know more...</P> <P>Which IP-address is used from the gateway to send the keep alive packets ?</P> <P>How about if more then one CheckPoint gateway is involved, meaning maybe two gateways in the network path between VoIP client and server.&nbsp;Which one sends the keep alive packets or both ?</P> <P>Will be disabling the protocol type of H.323 service the only solution ?</P> <P>Wolfgang</P> Thu, 23 Apr 2020 18:56:37 GMT Wolfgang 2020-04-23T18:56:37Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/problem-with-VoIP-and-video-after-one-hour/m-p/82990#M11398 <P>Has anyone experience with&nbsp;<A href="https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&amp;solutionid=sk113749" target="_blank" rel="noopener">H.323 VoIP call drops after exactly one hour because Keep Alive "ACK" packets are not forwarded to the VoIP client</A>&nbsp;</P> <P>We had the described problem, solution does not work and I want to know more...</P> <P>Which IP-address is used from the gateway to send the keep alive packets ?</P> <P>How about if more then one CheckPoint gateway is involved, meaning maybe two gateways in the network path between VoIP client and server.&nbsp;Which one sends the keep alive packets or both ?</P> <P>Will be disabling the protocol type of H.323 service the only solution ?</P> <P>Wolfgang</P> Thu, 23 Apr 2020 18:56:37 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/problem-with-VoIP-and-video-after-one-hour/m-p/82990#M11398 Wolfgang 2020-04-23T18:56:37Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/problem-with-VoIP-and-video-after-one-hour/m-p/82998#M11399 <P>Hi <a href="https://community.checkpoint.com/t5/user/viewprofilepage/user-id/1447">@Wolfgang</a>,</P> <P>If you are using more than one CP gateway, you have already described the correct solution.</P> <P>Alternatively you can create a new H323 service and set the TCP timeout higher.&nbsp; It is also important to deactivate "aggressive aging".&nbsp; I have used here for example 5 hours (18000 sec). However, this solution is not really nice either.<BR /><BR /></P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="H323.JPG" style="width: 465px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/5763iD4416E1DA0ADA369/image-dimensions/465x505?v=v2" width="465" height="505" role="button" title="H323.JPG" alt="H323.JPG" /></span></P> Thu, 23 Apr 2020 20:23:56 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/problem-with-VoIP-and-video-after-one-hour/m-p/82998#M11399 HeikoAnkenbrand 2020-04-23T20:23:56Z