You can generate a new URL for an HTTP Source at any time. Generating a new URL completely invalidates the old URL.
If you see a 401 (failed to authenticate) error message right after generating a new URL, wait a few minutes, then try the new URL again.
To generate a new URL:
In Sumo Logic select Manage Data > Collection > Collection.
On the Manage Collection page, click Regenerate URL next to the HTTP source.
In the HTTP Source Address dialog box, click Generate.
When asked to confirm the generation, click OK.
In the HTTP Source Address dialog box, the new URL is displayed. Copy and paste the URL, then click OK.