![]() ![]() If you are having connection problems, please see troubleshooting. However, in some cases there may be issues caused by proxy servers/firewalls preventing or interrupting ICA/SSL traffic due to the way they are configured to handle HTTPS traffic. If the default web browser connection settings route internet traffic through a proxy server or firewall, most proxy servers and firewalls should allow the connection as they will try to treat ICA/SSL the same as HTTPS traffic.If the default web browser connection settings allow direct internet access, you should not experience any problems connecting to the IMS applications.The client computer will try to resolve “” to an IP address before attempting to connect using the client computer’s default web browser connection settings.The ICA file contains entries instructing the client to connect to on port 443 using the client’s default web browser settings. The user launches an application and a Citrix ICA file is automatically generated and passed to the Citrix client.This should be accessible in most cases as it’s the default HTTPS port and the Fully Qualified Domain Name is resolvable by any external DNS, like any other external website. The user connects to the website and logs in.Therefore, firewalls and proxies do not really differentiate between ICA/SSL and HTTPS, and typically try to treat ICA/SSL as HTTPS. Because SSL is the encryption protocol, firewalls, routers, proxies and so on between the client and the server cannot “see” what is inside the protocol. ICA/SSL is a Citrix-proprietary protocol used for secure communications between Citrix clients and servers, on port 443. As port 443 is the official registered port for HTTPS any traffic over port 443 is assumed to be HTTPS by firewalls and proxy servers. HTTPS is HTTP wrapped in SSL (the encryption protocol) and is typically delivered over port 443. Because this is the default HTTPS port, it is envisaged that most organisations will already have this open. In most cases the only requirement is that access to the above address is allowed on port 443. The IMS applications are then “tunneled” through to the same address on port 443 using a secure connection from the Citrix client (ICA/SSL), with the Citrix client configured to automatically use your web browser’s connection settings. The website is accessed on port 443 which is the default SSL port for secure connections (HTTPS). IMS uses Citrix Gateway which simplifies the connectivity requirements. Connecting to IMS using the Citrix Gateway If you click on ‘Add Account’, you’ll be taken to another screen – click close as we don’t use this feature.Īlternatively save the installation file if you wish to deploy the Citrix client using your own software management system. After the installation is complete, click ‘Finish’.This will then go through to the installation process. ![]() Click Install – App protection is not required so you don’t need to enable it.You’ll need to read the agreement and tick the “I accept the license agreement” then click Next. This will take you to the Licence Agreement page.You’ll see a ‘Welcome to Citrix Workspace’ box.Once CitrixWorkspaceApp.exe has downloaded double click to install it.Click on ‘Download Citrix Workspace app’ for Windows which will download a file named CitrixWorkspaceApp.exe.Further down the page there is a link for a “Workspace app for Mac” for any Apple Mac users to download and install the latest version. Click on Citrix Workspace app 20xx for Windows (note: this number will change periodically when Citrix release new versions).If you are accessing IMS from a tablet or mobile device, you can install the Citrix Workspace App from the relevant App Store – for example, Google Play Store or Apple Store – by searching for “Citrix Workspace”. 3.1 Install the Citrix client from the homepage Whilst you don’t have to install the latest version of the Citrix client before accessing IMS it’s recommended to install the latest version for improvements and security updates. If your organisation already uses other Citrix applications, then you may already have a Citrix client installed on your computer. New users of IMS will need to install a Citrix client. a supported browser – for example: IE11, Edge, Chrome or Firefox.internet connectivity – specifically on port 443.The following is required for connection to the IMS system: ![]() If you already had firewall or proxy rules in place for the old IP address, then you will need to add the new IP address to avoid connection problems. The external IP address for will change from Monday 11 April 2021, from the old address 212.250.178.40 to 195.224.144.166. ![]()
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