1. Get MySQL Workbench for Windows
https://dev.mysql.com/downloads/workbench/
2. Make sure your network firewall are open on port 3306 from your workstation/jumphost to the gateway database node
3. Make sure you have an account that will allow you access to the database
a. ssh into the gateway
b. run mysql
c. use mysql
d. select user,host from user;
+------------+-------------------------+
| user | host |
+------------+-------------------------+
...
| gateway | % |
...
+------------+-------------------------+
15 rows in set (0.00 sec)
(With the gateway account password I could use the above user since the allowed host is wildcard. If you don't have that account password or it is not allowed for any host then you can create a new user and copy the permissions from one of the gateway users that is restriced to your particular nodes.)
4. Open MySQL Workbench and connect to database
a. hostname: your primary database host
b. port 3306
c. username gateway or root (or whatever other user you may have created for this purpose)
d. password (the password for the database user that you are using)
e. default schema: ssg (unless you changed it from the default name during configuration fo your gateway)