# I 'm new to cockpit and had connection problem

**URL:** <https://discourse.getcockpit.com/t/i-m-new-to-cockpit-and-had-connection-problem/2784>\
**Category:** Support\
**Created:** [May 8, 2023, 5:22pm UTC](https://discourse.getcockpit.com/t/i-m-new-to-cockpit-and-had-connection-problem/2784 "2023-05-08T17:22:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![glda19](https://avatars.discourse-cdn.com/v4/letter/g/4bbf92/32.png) [@glda19](https://discourse.getcockpit.com/u/glda19)\
**Post date:** [May 8, 2023, 5:22pm UTC](https://discourse.getcockpit.com/t/i-m-new-to-cockpit-and-had-connection-problem/2784/1 "2023-05-08T17:22:08Z")

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I have here to desktop pc’s with linux mint  
On both i installed cockpit.  
I use the last version of firefiox  
But when i try to add the a new host i’ve got the message Cockpit could not contact the specified host.  
But when type 192.168.1.129:9090 as address for the other Linux machine.  
the i’ve got this error

 ![Cockpit error Firefox](https://canada1.discourse-cdn.com/flex030/uploads/getcockpit/original/2X/9/9b95de375c95008a8f994813215aeebc52174259.png)

when i click on the button accept the risk and move on  
Then i see the login screen of the other host. Why can i add the other host when i’m loged in to the following adress localhost:9090 in firefox on linux mint

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**Author:** ![raffaelj](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.getcockpit.com/raffaelj/32/331_2.png) [@raffaelj](https://discourse.getcockpit.com/u/raffaelj)\
**Post date:** [May 11, 2023, 5:21pm UTC](https://discourse.getcockpit.com/t/i-m-new-to-cockpit-and-had-connection-problem/2784/2 "2023-05-11T17:21:01Z")

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This is not an issue about Cockpit CMS. You have to do some research about (self signed) ssl certificates - or just don’t use `https` on your local development machine. `http://192.168.1.129:9090` should work without the error message.