When I need access to the files on the local network I usually go for SSH or Samba.

SSH

Destination machine

Destination host has to have SSH package installed, in order to accept SSH connections:

sudo apt update
sudo apt install openssh-server

Local machine

Authenticate to destination machine and access destination files:

ssh destination_user@destination_ip_address

Enter destination_pass when prompted.

Samba

Destination machine

On destination machine install necessary packages:

  sudo apt-get install -y samba samba-common python-glade2 system-config-samba

Open nautilus, right-click on the folder you want to share and choose the Local Network Share option. When the File Sharing dialog opens, select Share this folder.

Setup samba password:

  smbpasswd -a username

Local machine

• Open nautilus -> Other locations -> click on remote machine -> authenticate with user and smbpasswd.

• Access shared folder via terminal

  cd /run/user/<uid>/gvfs