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Check if DNS is an issue (different nslookup result with and without VPN)<br>If it's the same, what filtering are you using on outgoing web connections? Could be routing issue, firewall issue, filtering issue.
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Check if DNS is an issue (different nslookup result with and without VPN)
If it's the same, what filtering are you using on outgoing web connections? Could be routing issue, firewall issue, filtering issue.

Architect

Sathish David  Kumar N

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reslove via programmatically&nbsp;
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In my application i have some external API call , for that I am using resttemplate to call the API rest API call working fine with out VPN connection ,<br>when I connect to VPN API call is not working its giving connection time out exception &nbsp;.<br><br>Even I set proxy and tried that is also no use .<br><pre><code class="code-1 nolinks" id="code-10-29218991-1">System.setProperty("https.proxyHost","xxxxx");
System.setProperty("https.proxyPort","80");</code></pre>I am calling https url only . <br><br>How to make the application work for both with and Without VPN&nbsp;
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In my application i have some external API call , for that I am using resttemplate to call the API rest API call working fine with out VPN connection ,
when I connect to VPN API call is not working its giving connection time out exception  .
Even I set proxy and tried that is also no use .
System.setProperty("https.proxyHost","xxxxx");
System.setProperty("https.proxyPort","80");
I am calling https url only .
How to make the application work for both with and Without VPN 

rest API call working fine with out VPN , with VPN not working

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules and security requirements.

Java EE

Representational state transfer (REST) is an architectural style that gives a coordinated set of constraints to the design of components in a distributed hypermedia system used to design networked applications. RESTful systems typically communicate over Hypertext Transfer Protocol (HTTP) with the same HTTP verbs (GET, POST, PUT, DELETE, etc.) that web browsers use to retrieve web pages and to send data to remote servers. REST interfaces with external systems using resources identified by Uniform Resource Identifier (URI) that can be operated upon using standard verbs.

REST

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.