http://wiki.openwrt.org/inbox/replacingdropbearbyopensshserver
Replacing Dropbear by openssh-server
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Change the Dropbear port to an unused/free one on your box and restart Dropbear
uci set dropbear.@dropbear[0].Port=2222 uci commit dropbear /etc/init.d/dropbear restart
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Make sure you have set a root password before rebooting
passwd
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Reconnect to your router via SSH on the configured port above
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Install the openssh-server
opkg update opkg install openssh-server
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Enable and start OpenSSH server. OpenSSH will listen now on port 22
/etc/init.d/sshd enable /etc/init.d/sshd start
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Reconnect to your router via SSH on port 22
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Now you can disable Dropbear
/etc/init.d/dropbear disable /etc/init.d/dropbear stop
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Install the
openssh-sftp-serverpackage to install support for the SFTP protocol which SSHFS usesopkg update opkg install openssh-sftp-server
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Don't forget to configure the openssh server in /etc/ssh/sshd_config