z/OS
Communcation Server
Common TELNET SSL problems
Most TELNET SSL problems come into Level 2 with a very generic symptom of “my emulator works fine in BASIC mode but fails to my SECURE port”. This is not enough information to begin diagnosis. The following type message is generally all that will be seen in the console log.
EZZ6034I TELNET CONN
00002A59 LU **N/A**
IP..PORT: 171.132.114.168..1181
TELNET will
produce additional diagnostic messages (EZZ6035I) for SSL connection failures if DEBUG (or DEBUG
DETAIL)
is coded in the
TELNETPARMS section of the TCPIP profile.
A typical message would look like one of the following:
EZZ6035I TELNET DEBUG CLIENT
IPADDR..PORT 129.255.16.30..1297
395
RCODE: 6002-00
SSL/TLS handshake failed.
PARM1: 00000191 PARM2:
PARM3: GSK_SECURE_SOCKET_INIT
EZZ6035I TELNET DEBUG CLIENT
IPADDR..PORT 9.24.106.91..1290
747
RCODE: 600E-00 SSL handshake Timed
out.
PARM1: FFFFFFEA PARM2: 00000000
PARM3: 00000000