How do I start the Jenkins process in offline mode on one of my servers?

I am trying to start Jenkins by running command java -jar jenkins.war, but it is failing at the below warning because of no connectivity.

Is there any way to skip this plugin upgrade through the internet and bring the Jenkins up and running?

```
2021-04-27 16:53:43.490+0000 [id=64] WARNING hudson.model.UpdateCenter#updateDefaultSite: Upgrading Jenkins. Failed to update the default Update Site 'default'. Plugin upgrades may fail.
2021-04-27 16:53:43.490+0000 [id=64] WARNING hudson.model.UpdateCenter#updateDefaultSite: Upgrading Jenkins. Failed to update the default Update Site 'default'. Plugin upgrades may fail.
java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:666)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1570)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
at hudson.model.DownloadService.loadJSON(DownloadService.java:116)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:218)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:213)
at hudson.model.UpdateCenter.updateDefaultSite(UpdateCenter.java:2611)
at jenkins.install.SetupWizard.init(SetupWizard.java:212)
at jenkins.install.InstallState$InitialSecuritySetup.initializeState(InstallState.java:168)
at jenkins.model.Jenkins.setInstallState(Jenkins.java:1104)
at jenkins.install.InstallUtil.proceedToNextStateFrom(InstallUtil.java:98)
at jenkins.install.InstallState$Unknown.initializeState(InstallState.java:86)
at jenkins.model.Jenkins$16.run(Jenkins.java:3356)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:1131)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2021-04-27 16:53:43.491+0000 [id=53] INFO jenkins.InitReactorRunner$1#onAttained: Completed initialization
2021-04-27 16:53:43.494+0000 [id=92] INFO hudson.util.Retrier#start: The attempt #1 to do the action check updates server failed with an allowed exception:
java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:666)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1570)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
at hudson.model.DownloadService.loadJSON(DownloadService.java:116)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:218)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:213)
at hudson.PluginManager.checkUpdatesServer(PluginManager.java:1882)
at hudson.util.Retrier.start(Retrier.java:63)
at hudson.PluginManager.doCheckUpdatesServer(PluginManager.java:1853)
at jenkins.DailyCheck.execute(DailyCheck.java:93)
at hudson.model.AsyncPeriodicWork.lambda$doRun$0(AsyncPeriodicWork.java:100)
at java.lang.Thread.run(Thread.java:748)
2021-04-27 16:53:43.494+0000 [id=92] INFO hudson.util.Retrier#start: Calling the listener of the allowed exception 'connect timed out' at the attempt #1 to do the action check updates server
2021-04-27 16:53:43.497+0000 [id=92] INFO hudson.util.Retrier#start: Attempted the action check updates server for 1 time(s) with no success
2021-04-27 16:53:43.499+0000 [id=92] SEVERE hudson.PluginManager#doCheckUpdatesServer: Error checking update sites for 1 attempt(s). Last exception was: SocketTimeoutException: connect timed out
2021-04-27 16:53:43.504+0000 [id=36] INFO hudson.WebAppMain$3#run: Jenkins is fully up and running
2021-04-27 16:53:43.504+0000 [id=92] INFO hudson.model.AsyncPeriodicWork#lambda$doRun$0: Finished Download metadata. 20,249 ms
2021-04-27 16:54:13.279+0000 [id=106] INFO hudson.model.AsyncPeriodicWork#lambda$doRun$0: Started Periodic background build discarder
2021-04-27 16:54:13.280+0000 [id=106] INFO hudson.model.AsyncPeriodicWork#lambda$doRun$0: Finished Periodic background build discarder. 1 ms```