rtorrent config file for use on an embedded device, like a router.

rtorrent.rc

# rtorrent.rc. Good for a router with 256MB RAM

# min and max peers per torrent
min_peers = 15
max_peers = 30

# max concurrent uploads
max_uploads = 10
max_uploads_global = 30

# upload and download rates
download_rate = 0
upload_rate = 5120

# max open files
network.max_open_files.set = 256

# ratio, when reached close torrent
ratio.enable=
ratio.min.set=200
ratio.max.set=500

# system.method.set = group.seeding.ratio.command, d.close=

# set encryption
encryption = require,allow_incoming,require_RC4

# dir to save downloads
directory = /mnt/storage/torrent_downloads/

session = /mnt/storage/torrent_downloads/.session

# watch dir, auto download new .torrent files placed into this dir
schedule = watch_directory,10,10,load.start=/mnt/storage/torfiles/*.torrent

# ports to use, these need to be opened on the firewall
port_range = 30305-30307
port_random = yes

# check hash of completed downloads, set to no if your router has a single core SoC
check_hash = yes

# dht
dht = auto
dht_port = 30308

# connect to UDP trackers
# use_udp_tracekrs = yes

# scgi_local is used for communication with the webUI.
# if you plan to use rtorrent in CLI only, delete this line.
scgi_local = /tmp/rtorrent.sock