Do I need a firewall if the service doesn't listen on all interfaces?
5994
Why would I need a firewall if my server is well configured?
153547
How do I write a python HTTP server to listen on multiple ports?
11092
How to tell which interface the socket received the message from?
53306
How to SSH an outside server from a computer which is behind a proxy firewall?
32171
Bind application to a specific network interface
88945
What firewall ports need to be open for Active Directory?
136264
How can I use Windows Firewall to only permit the Windows Update service to make an outbound connection?
91374
Surprisingly many network interfaces on macOS: are these legitimate?
144513
Why won't a 3G router do port forwarding when on the 3G interface?
118810
How to close ports / disable services?
57631
route on specific interface based on port
3268
Is there a preinstalled or automatic firewall?
31689
How do I programmatically disable "Connectivity Checking"?
28601
Why does the connection time out when connecting to a server?
143574
How can I force certain applications to use specific network connections?
130635
Postfix - How to prevent external clients from using my server as a relay?
154586
How to tell Windows 7 to ignore a default gateway