VPN

VPN

1. Antecedentes

   • PPTP
     • L2TP
       • neither encryption nor auth by itself
       • How it works?
         • encapsulated into UDP to port 1701

2. What is?

   • Is used to tunnel application data from remote host to VPN gateway
   • Proxy that gives user access to private resources

3. VS IPSEC

   • TLS/SSL transport payload
   • IPSEC encrypts at least, IP payload . TUNNEL(encrypt entire IP)

4. Benefits

   • Only https required
   • Flexibility
   • 443 already opened
   • Already built into browsers
   • No additional client required

5. Limitations

   • Only access to web-enabled apps
   • Multiple key exchanges may be required
   • Browser-based access to apps mean Internet access required

6. When to use which one

   • IPSEC, PPTP, L2TP
     • Limited number of employees accessing by trusted devices
   • SSL VPN
     • different locations
     • various devices
     • extranet to different users
     • Web-access

7. Flavours

   • Webxying pro CLI
   • APP translation CLI
   • Por forwarding Thin CLI
   • SSL'ed protocols Browserless
   • Application Proxying
   • Network Extension. Thick client -> PURE