Web browsers
| 
             Source  | 
           
             Destination  | 
           
             Protocols  | 
           
             Ports  | 
           
             Description  | 
          
| 
             Web browser (HTML5) and Let's Encrypt service  | 
           
             RAS Web Admin Service [RAS Management Portal]  | 
           
             TCP  | 
           
             20443  | 
           
             Admin access to HTML5 based Management Portal of RAS environment  | 
          
| 
             HALB  | 
           
             TCP  | 
           
             80, 443  | 
           
             End-user access to Parallels RAS Web Client (on Secure Gateway in Normal mode) through the HALB  | 
          |
| 
             RAS Secure Gateway  | 
           
             TCP  | 
           
             80, 443  | 
           
             End-user access to Parallels RAS Web Client (on Secure Gateway in Normal mode)  |