This method can be used for other Asus routers, but I tested it only on my Asus RT-AC68U.
- [optional, but highly recommended] Custom firmware to get extended router functionality and better stability (I recommend asuswrt-merlin);
- [optional] jffs partition enabled – if you want to access transmission from WAN using custom firewall scripts or to mount a network shared drive to router;
- Optware installed on your router. Entware is not yet compatible with Asus RT-AC68U. Link for New Generation Optware method at the end of the article;
- Be sure Optware is installed on a linux partition system (check if your router supports ext4. If not, ext3 or ext2 can be used. The Asus RT-AC68U supports ext4). NTFS and FAT32 are unstable for Optware. I used MiniTool Partition Wizard to format the drive before connecting it to the router.
- Be sure Download Master is uninstalled (it is incompatible with transmission);
- libiconv library (converts between character encodings) installed on Optware;
- nano text editor installed on Optware;
- You need to enable SSH connection to your router;
- PuTTY installed on your computer;
- [optional] Transmission Remote GUI for PC; Torrnado for Android.
- [optional, but recommended] SWAP activated on the router.
To install transmission, you need to login to router with PuTTY terminal. Use the username and password required to login to the router’s web interface and run each of the following lines.
ipkg update ipkg upgrade ipkg install libiconv ipkg install nano ipkg install transmission wget -c -O /opt/etc/init.d/S95transmission http://tinyurl.com/jd4ovhy chmod 777 /opt/etc/init.d/S95transmission /opt/etc/init.d/S95transmission start /opt/etc/init.d/S95transmission stop chmod 777 /opt/etc/transmission-daemon/settings.json rm -r /opt/etc/transmission-daemon/settings.json wget -c -O /opt/etc/transmission-daemon/settings.json http://tinyurl.com/hbce2xl app_set_enabled.sh transmission yes
If you receive a 5xx error on wget, it might be because of high traffic on the Dropbox server which hosts the files and you have to try again later or try using the Google cache. If you received no error, transmission should be available at your router’s LAN IP on port 9091 (usualy 192.168.1.1:9091 or router.asus.com:9091). The default username and password are admin / password.
Now you have to stop the transmission-daemon and edit the settings file to customize it to fit your needs (don’t forget to change the default username and password). If you don’t stop the daemon first, the settings will not be saved.
/opt/etc/init.d/S95transmission stop nano /opt/etc/transmission-daemon/settings.json
For a better understanding of the parameters, check the official transmission documentation (old version of same file here). Now start transmission-daemon again and you can use Transmission Remote GUI / Torrnado to connect to it if you want more features than what the web interface offers. Both apps offer a better way to change the main settings, manage the downloads and they can register to be the default applications for .torrent files and magnet links.
IMPORTANT ISSUE I had with transmission running on Optware
The partition I use to download files to has a label, so instead of using /tmp/mnt/sda1/Torrents I had to use /tmp/mnt/Downloads/Torrents, where “Downloads” is the label of my partition. In my case, if I don’t include the label, Transmission would use /root/tmp as download path which has only a couple of MB free on the disk and transmission-daemon would crash when downloading a torrent.
To check how your drive was mounted and if it has to be used with a label or not, run the following command in PuTTY terminal:
ls -l /tmp/mnt
Download torrents on NAS drives
If you don’t want to download torrents on a disk mounted on the USB port of your router, here are the steps to download on a network shared drive (ex: from a NAS)
#create a directory where you will mount the network shared drive mkdir /mnt/sda1/nasdrive chmod 777 /mnt/sda1/nasdrive #mount drive mount \\\\192.168.10.1\\MyNetworkSharedDrive /mnt/sda1/nasdrive -t cifs -o "username=shareUser,password=sharePassword"
Replace “\\\\192.168.10.1\\MyNetworkSharedDrive” with the path of your network drive you want to mount on the router.
Backslashes should be escaped or else the shell will misinterpret them.
The effect of the mount command is not persisting after a reboot.
To automatically mount the shared drive on your router after reboot, follow these steps:
- Activate jffs on your router. You might have to reboot a couple of times for the jffs to be created and formatted;
- Create/update file “/jffs/scripts/post-mount” with these lines:
#Create/update script nano /jffs/scripts/post-mount
#!/bin/sh mount \\\\192.168.10.1\\MyNetworkSharedDrive /mnt/sda1/nasdrive -t cifs -o "username=shareUser,password=sharePassword"
#Give execute rights to the script chmod a+rx /jffs/scripts/post-mount
WARNING! Anyone with access to post-mount script can see the user name and password of your network shared drive.
Access transmission from WAN
If you want to be able to connect from WAN to transmission, you have to open the port 9091 in you firewall.
If you cannot open it using the router’s web interface you can do it by using a firewall script in jffs. For this you need custom firmware with jffs partition enabled (I recommend asuswrt merlin build). If you don’t have a firewall-start script, run the following commands.
wget -c -O /jffs/scripts/firewall-start http://tinyurl.com/hczpg5g chmod a+rx /jffs/scripts/firewall-start nano /jffs/scripts/firewall-start reboot
If you already have the script, skip line 1 and 2 and just add the following rules to your existing script.
#transmission web interface iptables -I INPUT -p tcp --destination-port 9091 -j ACCEPT #transmission listening port iptables -I INPUT -p tcp --destination-port 51413 -j ACCEPT iptables -I INPUT -p udp --destination-port 51413 -j ACCEPT
Email notifications from transmission
If you are interested in having email notifications, check merlin’s tutorial to email notifications.
ipkg remove transmission
New Generation Optware
If this tutorial doesn’t work for you, you can also try to install Transmission Download Manager through New Generation Optware.
On 8th of January 2017 this tutorial was still working and the files to be downloaded were available. Let me know in the comments if you encounter any issues.