Given that the internal IP address of a Citrix server is 10.3.2.1 and
the firewall has mapped an External IP address of 188.8.131.52, from that
Citrix server you would specify at a command line:
Checklist for Connecting to a Citrix Server by ICA Link on Web
The recommended set up for this Web
Computing Solution is to have your Web server outside the firewall and have your
Citrix servers inside the
A valid external IP address(es) has been mapped to the Citrix server(s) inside
2. Port 1494 for TCP/IP is opened.
3. Port 1604 for
UDP is open Inbound on the firewall.
4. Port 1023 and above (The High
Ports) are opened for TCP and UDP outbound.
Run the ALTADDR utility on the Citrix server(s). Each
Citrix server that is mapped from the firewall must be mapped to the
corresponding address on the firewall. This is done from the command line and
must be done from each Citrix server that is mapped to an alternate
Example: ALTADDR /SET InternalIPAddress ExternalIPAddress
ALTADDR /SET 10.3.2.1
The ICA File
After you publish the application and select
to write an ICA file, you must make the necessary modifications in order to
connect to the published application.
Example of an ICA File That
Has Not Been
(internal IP address of the server)
IP address of another server on
The Same ICA File Modified to
(External IP Address of the Citrix Server)
UseAlternateAddress=1 (this has
been added for address
NOTE: We have removed the NetBiosBrowserAddress,
NetBiosBrowserAddress2, and both the IpxBrowserAddress and IpxBrowserAddress2.
These are not needed and it is recommended that these be removed, leaving only
one TcpBrowserAddress entry.
Security is always an issue with Web
computing. Citrix offers SecureICA Services that can be used to encrypt data
that is transported between the client and the server. This is an excellent
solution for this type of computing environment.
notes that can be found on the Citrix on-line Knowledge Base
Empowering Your Web Site with WinFrame
Firewalls with WinFrame
ICA Browsing with Firewall Address Translation
File Name: None at this time Posted on FTP/BBS: Not
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Category: Citrix ALE ;
09/16/99 12:36:22 PM