If I want to open a TCP socket between 2 processes on the same computer, will having the server run on localhost and the client connect on localhost be safe from any firewall intervention?
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If I want to open a TCP socket between 2 processes on the same computer, will having the server run on localhost and the client connect on localhost be safe from any firewall intervention?
Some firewalls are overzealous in this matter — which is why IDLE (the Python bundled IDE which talks to children-programs on a localhost socket) warns about it and offers a command line option to avoid this bother (unfortunately, it mostly happens on Windows, so Unix-domain sockets are not a viable alternative to TCP sockets!-).