+++
date = 2013-03-03T00:00:00+00:00
title = "Synology DS123 Hacking"
+++

Links

  - [SynoCommunity](http://www.synocommunity.com/)
  - [Optware](http://www.nslu2-linux.org/wiki/Optware/HomePage/)

What's running

## The usuals

  - cron
  - inetd
  - syslogd
  - rsyslogd
  - hotplugd

## Services

  - ntpd
  - sshd
  - Apache httpd 2.2.22
  - postgres
  - cupsd
  - Sambda nmbd / smbd
  - snmpd
  - avahi-daemon
  - lighttpd for MediaServer

## Layout

Generally under `/usr/syno` with one directory per package. Some in the
usual UNIX `bin` etc.

## Installing Debian

SynoCommunity provide a chroot package that can be installed from the
DSM. It needs a little bit of work past there. Some incomplete notes:

  - `admin` and `root` have the same password, but only `root` can `su;
    chroot`
  - The chroot ended up in
    `/volume1/@appstore/debian-chroot/var/chroottarget`
  - Create the user and role account through DSM first
  - Copy into the chroot `passwd` and `shadow` - don't overwrite
  - Bind mount `/volume1/homes` (`/var/services/homes`)
  - Bind mount `/dev`, `/dev/pts`, and `/proc` for sshd to work
  - Run `sshd` inside the chroot to get direct, non-root access. Use a
    different port in `/etc/ssh/sshd_config`
  - Change `/etc/apt/sources.list` to testing only. Drop the pinning in
    `/etc/apt/preferences`

A bit of hacking later, it seems that the scripts can do most of this
for you. `/var/packages/debian-chroot/scripts/start-stop-status` will do
the bind mounts (except /home). The Services tab lets you start and
monitor the ssh server from DSM.

Next question is should I run everything inside the chroot or try to use
the built-in basic services? The router will hide the port number
differences.