Configuring slave from EC2 master to Amazon RDS slave

I am configuring replication from EC2 master to Amazon RDS instance. After starting the slave, I don't see any errors but I see slave_IO: _thread is connecting. Master version:5.6.23 Slave Version:5.6.19 ###show slave status \G mysql> show slave status \G *************************** 1. row *************************** Slave_IO_State: Connecting to master Master_Host: XXXXXXXXXXX Master_User: XXXXXX Master_Port: 3306 Connect_Retry: 60 Master_Log_File: cli-bin.000032 Read_Master_Log_Pos: 713 Relay_Log_File: relaylog.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: cli-bin.000032 Slave_IO_Running: Connecting Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: mysql.plugin,innodb_memcache.cache_policies,mysql.rds_sysinfo,mysql.rds_replication_status,mysql.rds_history,innodb_memcache.config_options Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 713 Relay_Log_Space: 618 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 Master_UUID: Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 1 row in set (0.00 sec) ###show global variables mysql> show global variables like '%old_passwords%'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | old_passwords | 0 | +---------------+-------+ 1 row in set (0.01 sec) mysql> show global variables like '%secure_auth%'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | secure_auth | OFF | +---------------+-------+ 1 row in set (0.00 sec) ==================== The problem is Slave_IO_state is connecting and Slave_io_thread is connecting state but replication is not happening.