Source: man snd_hda
To enable bass/treble controls for pcm0, add the following to /boot/loader.conf:
For me the front headphone jack was plumbed to pcm1. To dump all information about the current configuration, do:
sysctl dev.hdac.0.pindump=1
dmesg
hdaa0: nid 0x as seq device conn jack loc color misc
...
hdaa0: 20 01014410 1 0 Line-out Jack 1/8 Rear Green 4
hdaa0: Caps: IN OUT HP Sense: 0x80000000 (connected)
...
hdaa0: 27 02214c1f 2 0 Headphones Jack 1/8 Front Green 12
hdaa0: Caps: IN OUT HP VREF Sense: 0x00000000 (disconnected)
In my case the rear audio jack has node ID (nid) 20 and is set to association (as) 1 and sequence (seq) 0. As for the front headphone jack nid=27, as=2, and seq=0. Changing it to as=1 will put it in the same group as the rear jack and setting seq=15 will make sure the rear jack gets muted when using the front jack. Add to /boot/loader.conf:
hint.hdac.0.cad0.nid27.config="as=1 seq=15"
Source: http://wiki.debian.org/OpenVPN
Install the openvpn package on both client and server.
Server-side, copy key generating script from openvpn example to /etc/openvpn:
cd /etc/openvpn
cp -a /usr/share/doc/openvpn/examples/easy-rsa/2.0/ easy-rsa
Edit the bottom of /etc/openvpn/easy-rsa/vars according to your organization.
export KEY_COUNTRY="Some country"
export KEY_PROVINCE="Some province/state"
export KEY_CITY="Some City"
export KEY_ORG="Some Organization"
export KEY_EMAIL="some@email.address"
Execute the following commands:
cd easy-rsa/
. ./vars
./clean-all
Generate CERTIFICATE AUTHORITY (CA) CERTIFICATE/KEY.
./build-key-server server
Generate BUILD DIFFIE-HELLMAN PARAMETERS (necessary for the server end of a SSL/TLS connection).
Generate key for each client.
Copy the files ca.crt, clientname.crt, clientname.key from the server to client into the /etc/openvpn/easy-rsa/keys/ directory.
On the server create /etc/openvpn/server.conf as follows. Make sure empty lines are completely empty, i.e. no spaces. The port and keepalive lines are optional if you want to use a non-standard port or customized keepalive behaviour. You probably want to change the server line to the desired values.
port 12345
proto udp
dev tun
topology subnet
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/server.crt
key /etc/openvpn/easy-rsa/keys/server.key
dh /etc/openvpn/easy-rsa/keys/dh1024.pem
server 192.168.100.0 255.255.255.0
ifconfig-pool-persist ipp.txt
keepalive 10 30
comp-lzo
persist-key
persist-tun
status /var/log/openvpn-status.log
verb 3
client-to-client
Server: Restart OpenVPN.
/etc/init.d/openvpn restart
On the client create /etc/openvpn/client.conf as follows. Don’t forget to change the port and remote lines to match the server settings.
client
dev tun
port 12345
proto udp
remote server_hostname_or_ip 12345
nobind
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/clientname.crt
key /etc/openvpn/easy-rsa/keys/clientname.key
comp-lzo
persist-key
persist-tun
status /var/log/openvpn-status.log
verb 3
Client: Restart OpenVPN.
/etc/init.d/openvpn restart
Sources: [1][], [2][], [3][], [4][]
[1]: http://wargle.blogspot.ca/2008/09/get-sip-phone-to-work-with-openwrt-on.html
[2]: https://forum.openwrt.org/viewtopic.php?id=9397
[3]: http://siproxd.sourceforge.net/index.php?op=odoc
[4]: http://wiki.openwrt.org/oldwiki/SIPwithTransparentProxyAndNokiaE61HowTo
Install Siproxd.
Edit /etc/config/siproxd. If you change rtp_port_low and/or rtp_port_high, make sure to change the next step accordingly.
config siproxd general
option if_inbound br-lan
option if_outbound eth1
option rtp_port_low 8000
option rtp_port_high 8050
option registration_file /tmp/siproxd_registrations-general
option rtp_timeout 150
option default_expires 150
Edit /etc/config/firewall to transparently redirect SIP traffic to Siproxd.
config redirect
option src 'lan'
option dest 'wan'
option proto 'udp'
option src_dport '5060-5062'
option dest_ip '192.168.2.1'
option dest_port '5060'
option target 'DNAT'
config rule
option src 'wan'
option proto 'udp'
option dest_port '5060-5062'
option target 'ACCEPT'
config rule
option src 'wan'
option proto 'udp'
option dest_port '8000-8050'
option target 'ACCEPT'
Install Xpra on the server and client:
To easily use Xpra in a LAN/VPN for one command at a time, create the following script. Please note that this script will not work for a remote system behind a NAT without the necessary ports opened. Change HOST and PORT to the desired values.
#!/bin/sh
HOST=remote
PORT=20100
ssh $HOST -- xpra start :100 --start-child="$@" --exit-with-children --bind-tcp=0.0.0.0:$PORT
# Tries to open HOST:PORT up to 10 times
for i in $(seq 0 9); do
if netcat -v -w 2 $HOST -z $PORT; then
break;
fi
sleep 2
done
xpra attach --encoding=x264 tcp:$HOST:$PORT
Then use the script like this, assuming it’s called remote_xpra.sh:
Source: http://ubuntuforums.org/showthread.php?t=363236
Install necessary packages
apt-get install x11vnc xinetd
Edit ~/.x11vncrc (as root)
display :0
quiet
nopw
auth guess
Edit /etc/xinetd.d/x11vnc
service x11vnc
{
port = 5900
type = UNLISTED
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/bin/x11vnc
server_args = -inetd -o /var/log/x11vnc.log -bg
disable = no
only_from = 192.168.100.0
}
Restart xinetd
/etc/init.d/xinetd restart