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 Terminal Server and Citrix Metaframe

 RDP vs ICA


With the release of Windows 2000">
 

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 Terminal Server and Citrix Metaframe

 RDP vs ICA


With the release of Windows 2000, Microsoft updated its RDP protocol from version 4 to version 5. With this is added many more features which made it a much more serious competitor to Citrix ICA protocol. Here we look at the differences between the two protocols. (Note: RDP 4 is used in Microsoft NT4 Terminal Server Edition)

       

 Supported Clients

ICA

RDP 4

RDP 5

Windows 95, 98, NT, 2000

YES

YES

YES

Windows for Workgroups 3.11 YES YES YES
Windows 3.1 YES
DOS YES
Windows CE YES YES YES
Macintosh YES
UNIX Solaris, DEC, HP/UX, IBM, SGI, SCO YES
Linux YES
Java YES
Browser YES YES
    

 Protocols

ICA

RDP 4

RDP 5

TCP/IP

YES

YES

YES

IPX/SPX YES
NetBEUI YES
   

 Network Connections

ICA

RDP 4

RDP 5

LAN

YES

YES

YES

WAN YES YES YES
Direct (async) Serial Connection YES
Direct Dial-up (without using a service like RAS) YES
RAS Dial-up (ISDN, xDSL, VPN) YES YES YES
   

 Multi-Media

ICA

RDP 4

RDP 5

System beeps

YES

YES

YES

Windows Audio (WAV, MIDI, AVI) YES
Video YES
Multi-media bandwidth control  YES
   

 Local Device Support

ICA

RDP 4

RDP 5

Print to local printer attached to a PC client

YES

YES

Print to a local printer attached to a WBT YES YES
Local drives accessible from server-based apps YES
Redirection of COM ports YES
   

 Other Capabilities

ICA

RDP 4

RDP 5

Cut and paste between client and server

YES

YES

Connect directly to application or full desktop YES YES YES
Automatically put servers apps on client desktop YES
Cache bitmaps to disk for improved performance YES YES
Encrypt protocol YES YES YES
Publish application to a web browser YES
   

 Management

ICA

RDP 4

RDP 5

Shadowing (remotely control other users desktop)

YES

YES

Automatically update client software YES
Pre-configure client with IP or other info YES YES

Please note that you can buy additional add on third party products which can close the gap between RDP 5 and ICA even further. Although we still believe that ICA is a far superior protocol at this time.

 

 

 

 

 

     

   

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