the best 3 season tents generally come with a waterproof rain fly and a breathable canopy ideally you want to find a three season tent with a waterproof floor the rugged bathtub floor is generally reserved for the more expensive four season tent but not always
The default port number of an outgoing SMTP server is  25: but a switch to another one can be needed: for instance, if you are facing issues with the SMTP connection (the client is not sending emails even if the server name is right) you can try to change the port as a troubleshooting measure.
Sql server default instance use tcp port 1433 by default for incoming connections, but you can choose another one. If this is the case, no need to configure your client. Only your server to accept incoming traffic on tcp port 1433. If its a named instance, you can either specifie a tcp port or choose a dynamic one. In that case, sql server browser service need to be started and you are looking for UDP port 1434 to be open on both, server and client.