As covered above, can confirm that with the correct cable it is simply a matter of plug and play. The only consideration being that you must use the printer port for the purposes of networking on at least older Macs... I beleive OS8 may allow networking through the modem port also, but cannot say that with 100% certainty. Have done it plenty of times for transfers between various machines. 
But yes, I beleive my cables were from SW1500's... that said it'd be much better to get some Farrallon PhoneNet or similar style DIN8-RJ11 localtalk tranceivers to allow connection of multiple machines concurrently with the connection from tranceiver to tranceiver being made with a simple straight through 4-wire telephone line with standard RJ11 connectors rather than special proprietry cables like the original encarnations of propietry Apple localtalk hardware. Using phone-net style tranceivers means you have the freedom to buy your own phone line in bulk and crimp it yourself at whatever length you like (within reason... the standard is pretty generous with cable lengths and active connections however... I networked an entire 5 bedroom house end to end with about 10 machines all concurrently physically connected and had no major latency or reliability issues.)
It's a very simple and effective way of networking vintage Mac's in an environment where TCP-based services are not required such as for the transfer of files and multiplayer gaming connectivity (most period multiplayer games support localtalk). You wont be able to use the internet via a network connection to a router easily if at all, but this is likely not going to be a problem given that most System 7 supported browsers are impotent at best in the current age, with the gophernet being the only truely universally usable webspace on old hardware.
But yes, I beleive my cables were from SW1500's... that said it'd be much better to get some Farrallon PhoneNet or similar style DIN8-RJ11 localtalk tranceivers to allow connection of multiple machines concurrently with the connection from tranceiver to tranceiver being made with a simple straight through 4-wire telephone line with standard RJ11 connectors rather than special proprietry cables like the original encarnations of propietry Apple localtalk hardware. Using phone-net style tranceivers means you have the freedom to buy your own phone line in bulk and crimp it yourself at whatever length you like (within reason... the standard is pretty generous with cable lengths and active connections however... I networked an entire 5 bedroom house end to end with about 10 machines all concurrently physically connected and had no major latency or reliability issues.)
It's a very simple and effective way of networking vintage Mac's in an environment where TCP-based services are not required such as for the transfer of files and multiplayer gaming connectivity (most period multiplayer games support localtalk). You wont be able to use the internet via a network connection to a router easily if at all, but this is likely not going to be a problem given that most System 7 supported browsers are impotent at best in the current age, with the gophernet being the only truely universally usable webspace on old hardware.