Accessing the file system other linux machines on the local network

Locate the other machines on your local network:

sudo arp-scan --localnet

result example:

Interface: wlp0s20f3, type: EN10MB, MAC: 04:33:c2:71:7e:42, IPv4: 192.168.0.106
Starting arp-scan 1.9.7 with 256 hosts (https://github.com/royhills/arp-scan)
192.168.0.1    cc:32:e5:54:10:13    TP-LINK TECHNOLOGIES CO.,LTD.
192.168.0.105    f0:f0:a4:15:28:59    (Unknown)
192.168.0.113    18:a6:f7:1d:98:59    TP-LINK TECHNOLOGIES CO.,LTD.
192.168.0.181    00:0e:08:eb:76:d5    Cisco-Linksys, LLC
192.168.0.157    c0:e7:bf:09:b8:bd    (Unknown)
192.168.0.172    fc:b4:67:55:a5:24    (Unknown)
192.168.0.192    24:dc:c3:a1:80:f0    (Unknown)
192.168.0.175    ac:41:6a:26:cd:1f    (Unknown)
192.168.0.173    e8:4c:4a:b4:cc:5c    (Unknown)
192.168.0.184    4e:03:73:ea:b3:b8    (Unknown: locally administered)
192.168.0.186    5c:61:99:7a:64:5d    (Unknown)
192.168.0.103    0c:9d:92:29:4a:a3    ASUSTek COMPUTER INC.
192.168.0.129    62:1e:f2:c4:cf:80    (Unknown: locally administered)

Hopefully these names will allow you to identify the machines. In my case the target machine was using a TP-Link wireless card so knowing the router is always 192.168.0.1, I was able to deduce that the target machine IP was 192.168.0.113

Now I am able to access the machine via SSH by using the command ssh <username>@192.168.0.113. Once connected I am prompted to enter the password for user <username>

To explore the remote file system with Nautilus, I can open my local Nautilus window and under + Other Locations add ssh://<username>@192.168.0.113. One open it will prompt me for the password for user <username>.