Firewall Wizards mailing list archives
Re: Citrix ICA - Published apps
From: Chris Brenton <cbrenton () sover net>
Date: Thu, 15 Apr 1999 17:06:01 -0400
Mailing Lists wrote:
Let's say I have a server farm of 3 computers, exporting 4 apps (Word, Excel, Access and Powerpoint) load balanced. You talked about setting "A" refs in your dns instead of using the load balancing feature. I would like to know more about this option, it sounds interesting!
OK, here's what you do: 1) Setup internal Citrix access as per normal only make sure you use legal DNS names for the names of the published Apps (i.e. no under scores, etc.). In the case above, lets say I name the first app word.bohica.edu. 2) On your external DNS, setup 3 "A" records pointing the app (word.bohica.edu) to each of the three Citrix servers 3) Open up port 1494 on your firewall to these three systems So let's say I've got a laptop user that needs WinFrame/MetaFrame access from both the office and from home. In the office, I easily find the master browser and I'm able to use Citrix load balancing. When I'm home, I dial-up my ISP and then launch the same word.bohica.edu application. When the MSB look up fails, the client falls back on DNS and resolves the IP address in a round robin fashion. For extra security, you could setup some form of authentication prior to connection. For example in the FW-1 world you could have users run the fwclient utility in order to do client authentication. Till you authenticate, port 1494 is not open to your IP address. Given that ICA traffic can be encrypted anyway, a full blown VPN is probably over kill. Hope this helps, Chris -- ************************************** cbrenton () sover net * Multiprotocol Network Design & Troubleshooting http://www.amazon.com/exec/obidos/ASIN/0782120822/geekspeaknet * Mastering Network Security http://www.amazon.com/exec/obidos/ASIN/0782123430/geekspeaknet
Current thread:
- Citrix ICA - Published apps Schultz, Ken (Apr 15)
- Re: Citrix ICA - Published apps Chris Brenton (Apr 15)
- Re: Citrix ICA - Published apps Mailing Lists (Apr 15)
- Re: Citrix ICA - Published apps Bruce B. Platt (Apr 15)
- <Possible follow-ups>
- Re: Citrix ICA - Published apps Mailing Lists (Apr 15)
- Re: Citrix ICA - Published apps Chris Brenton (Apr 15)
- Re: Citrix ICA - Published apps Jonathan Feldman (Apr 15)
- RE: Citrix ICA - Published apps Doug Sink (Apr 18)
- Re: Citrix ICA - Published apps Chris Brenton (Apr 18)
- Re: Citrix ICA - Published apps Chris Brenton (Apr 15)