The disclosed computer-implemented method for storing information about transmission control protocol connections may include (1) configuring a server with a transmission control protocol stack that is an alternative to a default transmission control protocol stack of an operating system of the server, (2) receiving, at the server, a request to establish a transmission control protocol connection with the server, (3) routing the request through the alternative transmission control protocol stack instead of the default transmission control protocol stack, and (4) storing, at the server via the alternative transmission control protocol stack, connection information about the transmission control protocol connection that excludes at least one item of information that would be stored by the default transmission control protocol stack. Various other methods, systems, and computer-readable media are also disclosed.