LDAP authentication of users for GUI

I hadn't tried that, but having done so, this is the output (I have replaced IP addresses for security):

[root@LB1:Active:Changes Pending] config  tcpdump -nni 0.0 port 389 and host 
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes
14:53:12.215807 IP .56539 > .389: S 2280840514:2280840514(0) win 14600 
14:53:12.216374 IP .389 > .56539: S 2623792533:2623792533(0) ack 2280840515 win 49248 
14:53:12.217106 IP .56539 > .389: . ack 1 win 115 
14:53:12.217297 IP .56539 > .389: P 1:70(69) ack 1 win 115 
14:53:12.217648 IP .389 > .56539: . ack 70 win 49179 
14:53:12.231806 IP .389 > .56539: P 1:15(14) ack 70 win 49248 
14:53:12.232093 IP .56539 > .389: . ack 15 win 115 
14:53:12.232477 IP .56539 > .389: P 70:135(65) ack 15 win 115 
14:53:12.232753 IP .389 > .56539: . ack 135 win 49248 
14:53:12.234563 IP .389 > .56539: P 15:500(485) ack 135 win 49248 
14:53:12.235802 IP .389 > .56539: P 500:1035(535) ack 135 win 49248 
14:53:12.235870 IP .389 > .56539: P 1035:1049(14) ack 135 win 49248 
14:53:12.236099 IP .56539 > .389: . ack 1035 win 131 
14:53:12.237373 IP .56539 > .389: P 135:204(69) ack 1049 win 131 
14:53:12.243468 IP .389 > .56539: P 1049:1063(14) ack 204 win 49248 
14:53:12.244275 IP .56539 > .389: P 204:273(69) ack 1063 win 131 
14:53:12.246356 IP .389 > .56539: P 1063:1077(14) ack 273 win 49248 
14:53:12.247753 IP .56539 > .389: P 273:389(116) ack 1077 win 131 
14:53:12.248710 IP .389 > .56539: P 1077:1091(14) ack 389 win 49248 
14:53:12.257520 IP .56539 > .389: P 389:396(7) ack 1091 win 131 
14:53:12.257595 IP .56539 > .389: F 396:396(0) ack 1091 win 131 
14:53:12.258015 IP .389 > .56539: . ack 397 win 49248 
14:53:12.258775 IP .389 > .56539: F 1091:1091(0) ack 397 win 49248 
14:53:12.259140 IP .56539 > .389: . ack 1092 win 131