# New variable | Variable | Description | |------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | **auto**
[`web address`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory` *`disabled`* | Automatic proxy configuration URL.
**Validators**:
• well-known ports (1 to 1023) are allowed
• registred ports (1024 to 49151) are allowed
• type domainname
• the domain name can be a hostname
**Disabled**: when the variable "[Configure Proxy Access to the Internet](#proxy_mode)" hasn't the value "Automatic proxy configuration URL". |