"Ummagurau" is often associated with custom or niche proxy scripts. In many cases, these scripts are based on established open-source proxy projects (such as PHPProxy or Glype) but are modified to:
nmap -sV -sC -oA umma_scan 10.10.10.39
The between a proxy and a VPN for privacy Ummagurau Proxy
While web proxies offer convenience, they come with significant caveats: "Ummagurau" is often associated with custom or niche