ldap client crypto question

["Gregory K. Ruiz-Ade" <gkra@cs.ucsd.edu>]

I'm using a custom perl script, using perl-ldap (Net::LDAP).

I'm trying to connect to my server via ldaps://.  On RHEL4 (and  
CentOS4) this works without problem.  On RHEL5, I keep getting  
"stronger confidentiality required" error messages.

Connecting from an RHEL4 client gives me:

Aug 15 16:51:52 csenet slapd2.3[4105]: conn=1318 fd=15 TLS established  
tls_ssf=256 ssf=256
Aug 15 16:51:54 csenet slapd2.3[4105]: conn=1318 op=0 BIND  
dn="<binddn>" method=128
Aug 15 16:51:54 csenet slapd2.3[4105]: conn=1318 op=0 BIND  
dn="<binddn>" mech=SIMPLE ssf=0
Aug 15 16:51:54 csenet slapd2.3[4105]: conn=1318 op=0 RESULT tag=97  
err=0 text=

Connecting from an RHEL5 client gives me:

Aug 15 16:57:14 csenet slapd2.3[4105]: conn=1326 fd=15 TLS established  
tls_ssf=56 ssf=56
Aug 15 16:57:14 csenet slapd2.3[4105]: conn=1326 op=0 BIND  
dn="<binddn>" method=128
Aug 15 16:57:14 csenet slapd2.3[4105]: conn=1326 op=0 RESULT tag=97  
err=13 text=stronger confidentiality required

I've got the same client configs on both systems, and TLS_REQCERT =  
allow.

The truly confusing part is when I do an ldapsearch (instead of trying  
the perl script) it works correctly:

Aug 15 17:00:08 csenet slapd2.3[4105]: conn=1331 fd=15 TLS established  
tls_ssf=256 ssf=256
Aug 15 17:00:08 csenet slapd2.3[4105]: conn=1331 op=0 BIND  
dn="<binddn>" method=128
Aug 15 17:00:08 csenet slapd2.3[4105]: conn=1331 op=0 BIND  
dn="<binddn>" mech=SIMPLE ssf=0
Aug 15 17:00:08 csenet slapd2.3[4105]: conn=1331 op=0 RESULT tag=97  
err=0 text=


Anyone have any ideas why perl-ldap/Net::LDAP would be using such  
weaker encryption?

Thanks,

Gregory


--
Gregory K. Ruiz-Ade
Sr. Systems Administrator
Computer Science and Engineering
University of California, San Diego
Office: EBU3b 1216
Phone:  (858) 822-2625
E-mail: gkra@cs.ucsd.edu