If you use a Java IDE or any other Java program that makes ssh connections to a server that has anything over 128 bit encryption turned on, then you'll see that it fails with the error:
RSEG1066
Failed to connect sshd on HMSWEBXX01.ZZZ.LAN:22
Algorithm negotiation failed
By default, the Java Development Kit and Java Runtime Environment do not offer ciphers larger than 128 bits. To fix, all you need to do is download the strong encryption JAR files for your version of the JDK/JRE and restart your Java app.
Java Cryptography Extension Unlimited Strength Downloads
JDK/JRE 1.6
http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html
JDK/JRE 1.7
http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
Copy local_policy.jar and US_export_policy.jar to your JRE/JDK's lib\security directory
Examples of possible destination folders:
JRE 1.6, 32-bit C:\Program Files (x86)\Java\jre6\lib\security
JRE 1.7, 32-bit C:\Program Files (x86)\Java\jre7\lib\security
JRE 1.6, 64-bit C:\Program Files\Java\jre6\lib\security
JRE 1.7, 64-bit C:\Program Files\Java\jre7\lib\security
JDK 1.7.0.51, 64-bit C:\Program Files\Java\jdk1.7.0_51\jre\lib\security