turnserver.conf

/usr/local/etc/turnserver.conf

This is the TurnServer configuration file.
Here are the configuration options supported.

The file contains the following definitions:

listen_address = { IPv4 address, ... }

The public IPv4 address of any relayed address (if not set, no relay for IPv4). You can set more than one address, example: listen_address = { "172.16.2.1", "173.17.2.1" }

The main advantage to have multiple public IPv4 addresses is to do load sharing.

listen_addressv6 = { IPv6 address, ...}

The public IPv6 address of any relayed address (if not set, no relay for IPv6). You can set more than one address, example: listen_addressv6 = { "2001:db8:1::1", "2001:db8:2::1" }

The main advantage to have multiple public IPv6 addresses is to do load sharing.

udp_port = number

The UDP port of the server to listen for incoming connections.

tcp_port = number

The TCP port of the server to listen for incoming connections.

tls_port = number

The TLS port of the server to listen for incoming connections.

tls = boolean

Enable or not TLS over TCP connections.

dtls = boolean

Enable or not TLS over UDP connections. It is an experimental feature of TurnServer and it is not defined by TURN standard.

max_port = number

Maximum allocation port number.

min_port = number

Minimum allocation port number.

turn_tcp = boolean

Enable or not TURN-TCP extension. This extension is documented in RFC6062.

tcp_buffer_userspace = boolean

Enable or not userspace buffering for TURN-TCP extension. If false server will use OS buffering.

tcp_buffer_size = number

TURN-TCP internal buffer size. It is used to bufferize data coming from TCP peer when client does not have sent ConnectionBind.

daemon = boolean

Run the program as daemon.

unpriv_user = string

If the program is run as root or setuid root, the program will drop its privileges to the unpriv_user privileges.

To use this feature, create a special user with the adduser command: adduser --system --group turnserver

realm = string

Realm value (i.e. domain.org).

nonce_key = string

Key used to hash nonce.

max_relay_per_username = number

Maximum number of allocation per username.

allocation_lifetime = number

Lifetime of an allocation in second.

bandwidth_per_allocation = number

Bandwidth limit for an allocation in KBytes/s. 0 value means disable bandwidth quota.

restricted_bandwidth = number

Bandwidth limit for restricted userse in KBytes/s. 0 value means disable bandwidth limitation.

denied_address {

 address = IPv4 | IPv6 address
 mask = bitmask number
 port = number (1 - 65535)
}

Defines an entry for the denied access list. This can appear multiple time. Format is defined as follow:
address is a string representing an IPv4 or IPv6 address.
mask is a number representing the bitmask (i.e. 24 is similar as 255.255.255.0, ...).
port is a number representing the network port. The 0 value means all ports.

It is strongly recommended to restrict addresses 127.0.0.1 and ::1 if there are private services running on the TURN server.

ca_file = string

The pathname of the Certification Authority certificate (required when tls=true).

cert_file = string

The pathname of the server certificate (required when tls=true).

private_key_file = string

The pathname of the server private key (required when tls=true).

account_method = [file | db | ldap ...]

The method to retrieve account data. Note that only the "file" method is implemented.

account_file = string

The pathname of the account file (required when account_method=file).

mod_tmpuser = boolean

Enable or not mod_tmpuser which consist of a socket that listen on localhost and external program can create or delete temporary user.

listen_address = { "172.16.0.1" }

listen_addressv6 = { "2001:db8::1" }

udp_port = 3478

tcp_port = 3478

tls_port = 5349

tls = true

dtls = false

max_port = 65535

min_port = 49152

turn_tcp = false

tcp_buffer_userspace = true

tcp_buffer_size = 32768

daemon = false

unpriv_user = turnserver

realm = "domain.org"

nonce_key = "hieKedq"

max_relay_per_username = 10

allocation_lifetime = 1800

bandwidth_per_allocation = 150

restricted_bandwidth = 10

denied_address {
address = "172.1.0.3"
mask = 24
port = 0

}

denied_address {
address = "127.0.0.1"
mask = 8
port = 0

}

denied_address {
address = "::1"
mask = 128
port = 0

}

ca_file = "/etc/ca.crt"

cert_file = "/etc/server.crt"

private_key_file = "/etc/server.key"

account_method = "file"

account_file = "/etc/turnusers.txt

Sebastien Vincent <sebastien.vincent@turnserver.org>

turnserver(1)