Changing LDAP "Search Attribute"

[John Eric Hamacher]

Hello:

I am authenticating against LDAP as such:

Hashtable authEnv = new Hashtable();
String dn =
"CN=" + userAuth.getFirstName() + " " + userAuth.getLastName() +
",OU=zzzzzzzz,DC=yyyyy,DC=xxx";

authEnv.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
authEnv.put(Context.PROVIDER_URL, "ldap://192.168.132.20:389");
authEnv.put(Context.SECURITY_AUTHENTICATION, "simple");
authEnv.put(Context.SECURITY_PRINCIPAL, dn);
authEnv.put(Context.SECURITY_CREDENTIALS, password);

I am using the user's first and last name to authenticate. Now, I want to use their login id to authenticate. I was told "to change the Search Attribute from 'uid' to 'sAMAccountName'". I don't know what this refers to. Does anybody have any ideas?

Thanks
Eric