I am trying to connect ORACLE DB behind NAT so i choose SSH TUNNEL via putty so here is the information
Global i p example: 122.54.34.12
LAN i p example : 192.168.3.103
ORACLE DB_PORT : 1521
and here is putty ssh tunnel settings
L1521 122.54.34.12:1521
so i connected to global IP ssh session and every thing is ok tell now , but when i want to connect ORACLE DB via SQL console after ssh tunnel
sql > connect username/password@127.0.0.1/service-name
ERROR:
ORA-12170:TNS Connect timeout occurred