You'll first need to install a VPN client and confirm that the connection works.
If it's a Cisco VPN then you just need to install vpnc and also a plugin for NetworkManager that allows you to configure it through that. I don't use KDE so it might differ slightly as to what application you need. But from doing a quick search I found that there's a KDE specific VPN client front end or you could use the network-manager plugin for KDE
Code:
user@linux:~$ apt-cache search vpnc
kvpnc - vpn clients frontend for KDE4
kvpnc-data - data files for KVpnc
kvpnc-dbg - vpn clients frontend for KDE4 - debugging symbols
network-manager-vpnc - network management framework (VPNC plugin)
network-manager-vpnc-gnome - network management framework (VPNC plugin, GNOME UI)
network-manager-vpnc-kde - KDE NetworkManagement infrastructure (VPNC plugin)
vpnc - Cisco-compatible VPN client
Set up your VPN connection and verify that it works by pinging a know host.
Open your file manager and go to the network places, again this'll vary. Under nautilus you can just press Ctrl+L then type in the URL
Code:
smb://ServerName/FolderName
Also under nautilus, and I dare say under dolphin(?), on the file menu there's a Connect To Server option where you can specify the details.
If you haven't used Samba on your computer before then you may need to install some additional packages.
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