Hello, I'm a happy dropbear user for my LG ARM Debian 6 NAS. To allow me to access it from internet, I exposed NAS port 22 on my home router. Yesterday I saw a nice Chinese gentleman trying and trying to login as root on my NAS, so I would like to strengthen the configuration.
First I would like to know if it is possibile to ban an IP after too many failed attempts. Second I would like to allow password login from within the LAN and require certificate login from outside: is this possible? Last thing: I test modifications to my NAS on a ARM QEMU VM with Debian 6 installed; when I try to put latest dropbear there (sudo dpkg -i), it says (I can't cut&paste): Restarting dropbear SSH server: ipv6: Unknown symbol udp_push_pending_frames invoke-rc.d: initscript dropbear (--install): the subprocess for old post-installation script returned error state 1 Errors isntalling dropbear and it is not there. Does anybody know how to fix this? Thank you very much! Dario
