Replace an expired Hub certificate

When a Hub's certificate has expired or will expire within 90 days, you have to rename or delete the existing certificate and reboot the Hub to get a new one.

Enable root shell.
Log in to the Hub with the Hub's IP address and password:
- Linux: SSH to the Hub IP address and log in with the Hub's IP address and password:
```
$ ssh admin@IP
(admin@x.x.x.x) Password:
```
- Windows: Log into the device using putty or Windows ssh:
```
> ssh admin@IP
> Password:
```
From the Access selection menu, choose "s" to access the root shell.
Either delete or rename the certificate, and then reboot the Hub.

Delete the certificate:
```
# rm /etc/config/ssl.pem 
# reboot
```
Rename the certificate:
```
# cd /etc/config/
# mv ssl.pem EXPIRED.pem
# reboot
```
After you reboot the Hub, the Hub creates a new Hub certificate, which will not be accepted by the existing AnywhereUSB Managers. You will need to reconnect the Hub to the existing AnywhereUSB Managers. For instructions, see Re-authenticate a Hub with the AnywhereUSB Manager.