How get in SQL pairs of connections in a FW Logs I have a database with orign_ip, destination_ip, and other columns.
I am looking for a way to get in SQL just the connections between two IP's, I need to get just the list.
This is my first step :

SELECT DISTINCT orig_h , resp_h from gustavo.conn;
 - 15.214.135.70                15.214.159.100
 - 15.214.136.45                15.214.137.70


But How I can get from this result the just the rows that match with  

15.214.135.70               15.214.159.100
SELECT DISTINCT orig_h , resp_h 
from gustavo.conn
WHERE orig_h = '15.214.135.70' AND resp_h = '15.214.159.100'