Hello,

We are currently running two CAS servers in a primary/failover setup behind
a Cisco ACE load balancer.  Our networking department is upgrading to an F5
load balancer.  During testing of CAS on the new F5 load balancer I am
receiving the exception below during authentication.  It has occurred on
multiple applications, so I know it is not related to the application.

Our Setup:

CAS 3.5.3
JDK 1.7
Tomcat 7 (behind an Apache HTTP Server)

Is it possible I need to change the hash algorithm and/or cipher suites
within my ssl.conf in Apache?  I believe they have configured F5 to only
allow TLS 1.2 connections.


java.lang.RuntimeException: javax.net.ssl.SSLHandshakeException: Received
fatal alert: handshake_failure

at
org.jasig.cas.client.validation.Saml11TicketValidator.retrieveResponseFromServer(
Saml11TicketValidator.java:275)

at org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(
AbstractUrlBasedTicketValidator.java:200)

at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(
AbstractTicketValidationFilter.java:206)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:241)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:208)

at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(
AuthenticationFilter.java:161)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:241)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:208)

at org.apache.catalina.core.StandardWrapperValve.invoke(
StandardWrapperValve.java:220)

at org.apache.catalina.core.StandardContextValve.invoke(
StandardContextValve.java:122)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(
AuthenticatorBase.java:505)

at org.apache.catalina.core.StandardHostValve.invoke(
StandardHostValve.java:170)

at org.apache.catalina.valves.ErrorReportValve.invoke(
ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)

at org.apache.catalina.core.StandardEngineValve.invoke(
StandardEngineValve.java:116)

at org.apache.catalina.connector.CoyoteAdapter.service(
CoyoteAdapter.java:423)

at org.apache.coyote.http11.AbstractHttp11Processor.process(
AbstractHttp11Processor.java:1079)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
AbstractProtocol.java:620)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(
JIoEndpoint.java:318)

at java.util.concurrent.ThreadPoolExecutor.runWorker(
ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(
ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(
TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert:
handshake_failure

at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)

at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)

at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2023)

at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125)

at sun.security.ssl.SSLSocketImpl.performInitialHandshake(
SSLSocketImpl.java:1375)

at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)

at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)

at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)

at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(
AbstractDelegateHttpsURLConnection.java:185)

at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(
HttpURLConnection.java:1282)

at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(
HttpURLConnection.java:1257)

at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(
HttpsURLConnectionImpl.java:250)

at
org.jasig.cas.client.validation.Saml11TicketValidator.retrieveResponseFromServer(
Saml11TicketValidator.java:259)

... 22 more

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