[Cerowrt-devel] Router ssh access unavailable on custom build

Dave Taht dave.taht at gmail.com
Sun Jul 6 14:00:24 EDT 2014

I would check for the presence of the dropbear-xinetd package and
/etc/xinetd.conf and xinetd.d/ssh

Openwrt uses dropbear (a lightweight ssh clone) directly. Cero uses xinetd
for extra security.

As for your other issues, a 3.3v serial cable is invaluable in
circumstances like this, I typically use a bus pirate to get onto the 4
header pins in the router.

On Jul 6, 2014 10:33 AM, "Ranga Krishnan" <ranga at eff.org> wrote:
> Dave,
> Appreciate any suggestions debugging the problem below.
> I finally flashed a build I made onto the router and it seems to boot
fine and
> is broadcasting the two SSIDs I programed into it but I cant ssh into the
> neither through wireless nor an ethernet cable.
> ----------------xxxxxxxxx--------------------
> $:OpenWireless ranga$ ssh root at
> ssh: connect to host port 22: Connection refused
> ----------------xxxxxxxxxx-------------------
> All ports except 53 seem to be blocked. Even the webserver
> we have running on 80/443 is not responding.
> -----------------------xxxxxxxxxxxx-----------------------
> $:OpenWireless ranga$ nmap
> Starting Nmap 6.46 ( http://nmap.org ) at 2014-07-06 07:23 PDT
> Nmap scan report for
> Host is up (0.0010s latency).
> Not shown: 999 closed ports
> 53/tcp open  domain
> Nmap done: 1 IP address (1 host up) scanned in 2.59 seconds
> ----------------------xxxxxxxxxxxxx-----------------------
> I started with the etc directory in 3.10.40-6 and removed a few things
> and made some changes in /etc/config. I kept the /etc/config/firewall
> file unchanged. So I am not sure if it is the firewall blocking the ports.
> Here is a link to the /etc I placed in cerowrt/files directory to have it
> compiled into the build.
> https://github.com/TWEFF/OpenWireless/tree/master/etc
> Could it be that when building, the permissions with which
> the files are being created in the firmware image are not what
> they need to be, and this is causing the problems I am seeing ?
> Is there any way to analyze the firmware image without flashing
> it onto a router ?
> Thanks,
> Ranga
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel
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