# PMM - Server cannot connect to the Client (ext IP --\> int. IP)

**URL:** <https://forums.percona.com/t/pmm-server-cannot-connect-to-the-client-ext-ip-int-ip/7233>\
**Category:** PMM 1.x\
**Created:** [October 10, 2019, 12:59pm UTC](https://forums.percona.com/t/pmm-server-cannot-connect-to-the-client-ext-ip-int-ip/7233 "2019-10-10T12:59:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Serguei](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Serguei](https://forums.percona.com/u/Serguei)\
**Post date:** [October 10, 2019, 12:59pm UTC](https://forums.percona.com/t/pmm-server-cannot-connect-to-the-client-ext-ip-int-ip/7233/1 "2019-10-10T12:59:32Z")

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We have installed PMM server and are trying to connect the very first client to monitor. The client machine (Ubuntu) has internal IP, and the external IP → internal IP forwarding is being done outside of the machine itself. Hardware vendor says all NAT/port forwardings are in place accordingly, but the connection does not work : pmm-admin check-network reports the connection section Server–\>Client as being down.  
Have we missed anything, or is there any check-list we could submit to the vendor to verify that NAT/port forwardings have been set up correctly for this?  
Any ideas or advices would be welcome…  
Thanks in advance