# How to get Lightning TLS Cert (Hex String)?

**URL:** <https://community.umbrel.com/t/how-to-get-lightning-tls-cert-hex-string/9894>\
**Category:** Support and Troubleshooting\
**Created:** [October 19, 2022, 7:29pm UTC](https://community.umbrel.com/t/how-to-get-lightning-tls-cert-hex-string/9894 "2022-10-19T19:29:52Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![pfkbk](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/pfkbk/32/3411_2.png) [@pfkbk](https://community.umbrel.com/u/pfkbk)\
**Post date:** [October 31, 2022, 2:14am UTC](https://community.umbrel.com/t/how-to-get-lightning-tls-cert-hex-string/9894/9 "2022-10-31T02:14:46Z")

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Since this thread has been marked as solved, I have opened a new one:

> [@Certificate configuration for Impervious browser](http://community.umbrel.com/t/certificate-configuration-for-impervious-browser/10060):
>
> Hello, I’ve been trying to configure my node with Impervious browser, with no luck. Amongst the required configs, there is TLS Cert (Hex String). For that, I’ve executed the following command: xxd -ps -u -c 1000 ~/umbrel/app-data/lightning/data/lnd/tls.cert Still, impervious is not able to connect, and the error message I’m getting is: transport: authentication handshake failed: x509: certificate is valid for 127.0.0.1, ::1, 10.21.21.9, not \<xx.xxx.xxx.xxx\> [My internet-facing IP] Upon ch…

@Eluc I’ve found the solution for the connectivity issue, and now impervious is connected to my node. The solution is documented in that thread.

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_[View the full topic](https://community.umbrel.com/t/how-to-get-lightning-tls-cert-hex-string/9894)._