Another (IMO) easy way would be:
# to remote host
cat localfile.conf | ssh user@hostname 'cat -> /tmp/remotefile.conf'
# from remote host
ssh user@hostname 'cat /tmp/remotefile.conf' > /tmp/localfile.conf
Or if you prefer something GUI-like, try Midnight Commander. They call the feature Shell-Link. Most distros have em in their package systems as mc.