xrdp.ini(5)

NAME
xrdp.ini - Configuration file for xrdp(8)

DESCRIPTION
This is the man page for xrdp.ini, xrdp(8) configuration file. It is composed by a number of sections, each one composed by a section name, enclosed by square brackets, followed by a list of <parameter>=<value> lines.

xrdp.ini supports the following sections:

[Globals] - sets some global configuration settings for xrdp(8).

[Logging] - logging subsystem parameters

[Channels] - channel subsystem parameters

All options and values (except for file names and paths) are case insensitive, and are described in detail below.

GLOBALS
The options to be specified in the [Globals] section are the following:

port=port_specification [ port_specification ... ]
    Specify the port(s) that xrdp should listen on. More instructions and examples can be found within xrdp.ini itself.

vmconnect=[true|false]
    (Hyper-V VMs only). Enables a wider support of security protocols when a virtual machine running xrdp is hosted on Hyper-V, and the user connects to it via the vmms service on TCP port 2179. In this configuration, RDP security is handled by the vmms service, and security features which are not yet added to xrdp itself can be supported.

    This parameter is required in environments which do not support 'classic' RDP encryption.

    The parameter is ignored for connections which are not made to the virtual machine over the vsock transport.

autorun=session_name
    Section name for automatic login. If set and the client supplies valid username and password, the user will be logged in automatically using the connection specified by session_name.

    If session_name is empty, the LOGIN DOMAIN from the client with be used to select the section. If no domain name is supplied, the first suitable section will be used for automatic login.

bitmap_cache=[true|false]
    If set to 1, true or yes this option enables bitmap caching in xrdp(8).

bitmap_compression=[true|false]
    If set to 1, true or yes this option enables bitmap compression in xrdp(8).

bulk_compression=[true|false]
    If set to 1, true or yes this option enables compression of bulk data in xrdp(8).

certificate=/path/to/certificate

key_file=/path/to/private_key
    Set location of TLS certificate and private key. They must be written in PEM format. If not specified, defaults to /etc/xrdp/cert.pem, /etc/xrdp/key.pem.

    This parameter is effective only if security_layer is set to tls or negotiate.

tls_pms_log_file=<path-to-log-file>
    Logs TLS pre-master secrets to the specified file. This allows packet capture tools (e.g. Wireshark) to decrypt captured PDUs.

    The file must be writeable by xrdp and readable by the packet capture tool. A good way to achive this is to create a temporary directory with permissions 2750 owned by the user running xrdp, and in the group used by the packet sniffer.

    SETTING THIS OPTION IS A SECURITY RISK. ONLY SET THIS OPTION FOR DEBUGGING COMMUNICATIONS BETWEEN XRDP AND A CLIENT.

channel_code=[true|false]
    If set to 0, false or no this option disables all channels xrdp(8). See section CHANNELS below for more fine grained options.

crypt_level=[low|medium|high|fips]
    Regulate encryption level of Standard RDP Security. This parameter is effective only if security_layer is set to rdp or negotiate.

    Encryption in Standard RDP Security is controlled by two settings: Encryption Level and Encryption Method. The only supported Encryption Method are 40BIT_ENCRYPTION and 128BIT_ENCRYPTION. 56BIT_ENCRYPTION is not supported. This option controls the Encryption Level:

    low All data sent from the client to the server is protected by encryption based on the maximum key strength supported by the client. This is the only level that the traffic sent by the server to client is not encrypted.

    medium
        All data sent between the client and the server is protected by encryption based on the maximum key strength supported by the client (client compatible).

    high
        All data sent between the client and the server is protected by encryption based on the server's maximum key strength (sever compatible).

    fips
        All data sent between the client and server is protected using Federal Information Processing Standard 140-1 validated encryption methods. This level is required for Windows clients (mstsc.exe) if the client's group policy enforces FIPS-compliance mode.

fork=[true|false]
    If set to 1, true or yes for each incoming connection xrdp(8) forks a sub-process instead of using threads.

hidelogwindow=[true|false]
    If set to 1, true or yes, xrdp will not show a window for log messages. If not specified, defaults to false.

max_bpp=[8|15|16|24|32]
    Limit the color depth by specifying the maximum number of bits per pixel. If not specified or set to 0, unlimited.

pamerrortxt=error_text
    Specify additional text displayed to user if authentication fails. The maximum length is 256.

    The use of 'pam' in the name of this option is historic

port=port
    Specify TCP port and interface to listen on for incoming connections. Specifying only the port means that xrdp will listen on all interfaces. The default port for RDP is 3389. Multiple address:port instances must be separated by spaces or commas. Check the .ini file for examples. Specifying interfaces requires said interfaces to be UP before xrdp starts.

runtime_user=username

runtime_group=groupname
    User name and group to run the xrdp daemon under.

    After xrdp starts, it sets its UID and GID to values derived from these settings, so that it's running without system privilege.

    The runtime_group MUST be set to the same value as SessionSockdirGroup in sesman.ini if you want to run sessions.

    A suitable user and group can be added with a command like this (Linux):-

    useradd xrdp -d / -c 'xrdp daemon' -s /usr/sbin/nologin

    In order to establish secure connections, the xrdp daemon needs permission to access sensitive cryptographic files. After changing either or both of these values, check that xrdp has access to required files by running this script:-

    /usr/share/xrdp/xrdp-chkpriv

enable_token_login=[true|false]
    If set to 1, true or yes, xrdp will scan the user name provided by the client for the ASCII field separator character (0x1F). It will then copy over what is after the separator as the password supplied by the user and treats it as autologon. If not specified, defaults to false.

domain_user_separator=separator
    If specified the domain name supplied by the client is appended to the username separated by separator.

require_credentials=[true|false]
    If set to 1, true or yes, xrdp requires clients to include username and password initial connection phase. In other words, xrdp doesn't allow clients to show login screen if set to true. It follows that an incorrect password will cause the login to immediately fail without displaying the login screen. If not specified, defaults to false.

security_layer=[tls|rdp|negotiate]
    Regulate security methods. If not specified, defaults to negotiate.

    tls Enhanced RDP Security is used. All security operations (encryption, decryption, data integrity verification, and server authentication) are implemented by TLS.

    rdp Standard RDP Security, which is not safe from man-in-the-middle attack, is used. The encryption level of Standard RDP Security is controlled by crypt_level.

    negotiate
        Negotiate these security methods with clients.

ssl_protocols=[SSLv3] [TLSv1] [TLSv1.1] [TLSv1.2] [TLSv1.3]
    Enables the specified SSL/TLS protocols. Each value should be separated by comma. SSLv2 is always disabled. At least one protocol should be given to accept TLS connections. This parameter is effective only if security_layer is set to tls or negotiate.

tcp_keepalive=[true|false]
    Regulate if the listening socket uses socket option SO_KEEPALIVE. If set to 1, true or yes and the network connection disappears without closing messages, the connection will be closed.

tcp_nodelay=[true|false]
    Regulate if the listening socket uses socket option TCP_NODELAY. If set to 1, true or yes, no buffering will be performed in the TCP stack.

tcp_send_buffer_bytes=buffer_size

tcp_recv_buffer_bytes=buffer_size
    Specify send/recv buffer sizes in bytes. The default value depends on the operating system. It is recommended not to set these on systems with dynamic TCP buffer sizing

tls_ciphers=cipher_suite
    Specifies TLS cipher suite. The format of this parameter is equivalent to which openssl(1) ciphers subcommand accepts.

    (ex. $ openssl ciphers 'HIGH:!ADH:!SHA1')

    This parameter is effective only if security_layer is set to tls or negotiate.

use_fastpath=[input|output|both|none]
    If not specified, defaults to none.

black=000000

grey=c0c0c0

dark_grey=808080

blue=0000ff

dark_blue=00007f

white=ffffff

red=ff0000

green=00ff00

background=000000
    These options override the colors used internally by xrdp(8) to draw the login and log windows. Colors are defined using a hexadecimal (hex) notation for the combination of Red, Green, and Blue color values (RGB). The lowest value that can be given to one of the light sources is 0 (hex 00). The highest value is 255 (hex FF).

fv1_select=130:sans-18.fv1,0:sans-10.fv1
    Selects a default fv1 font. This parameter is a comma-separated list of DPI:name pairs. The list is scanned from left-to-right. The font used is the first font whose DPI value is less-than-or-equal to the vertical DPI of the monitor used for the login screen.

default_dpi=96
    Default DPI used for a monitor if the client does not send physical size information.

LOGGING
The following parameters can be used in the [Logging] section:

LogFile=/var/log/xrdp.log
    This options contains the path to logfile. It can be either absolute or relative. If set to <stdout>, log will go to stdout. Use for debugging only

LogLevel=level
    This option can have one of the following values:

    CORE or 0 - Log only core messages. these messages are _always_ logged, regardless the logging level selected.

    ERROR or 1 - Log only error messages

    WARNING, WARN or 2 - Logs warnings and error messages

    INFO or 3 - Logs errors, warnings and informational messages

    DEBUG or 4 - Log everything. If xrdp-sesman is compiled in debug mode, this options will output many more low-level message, useful for developers

EnableSyslog=[true|false]
    If set to 1, true or yes this option enables logging to syslog. Otherwise syslog is disabled.

SyslogLevel=level
    This option sets the logging level for syslog. It can have the same values of LogLevel. If SyslogLevel is greater than LogLevel, its value is lowered to that of LogLevel.

EnableConsole=[true|false]
    If set to 1, true or yes, this option enables logging to the console (ie. stdout).

ConsoleLevel=level
    Logging level for the console. It can have the same values as LogLevel. Defaults to DEBUG.

EnableProcessId=[true|false]
    If set to 1, true or yes, this option enables logging the process id in all log messages. Defaults to false.

CHANNELS
The Remote Desktop Protocol supports several channels, which are used to transfer additional data like sound, clipboard data and others. Channel names not listed here will be blocked by xrdp. Not all channels are supported in all cases, so setting a value to true is a prerequisite, but does not force its use.
Channels can also be enabled or disabled on a per connection basis by prefixing each setting with channel. in the channel section.

rdpdr=[true|false]
    If set to 1, true or yes using the RDP channel for device redirection is allowed.

rdpsnd=[true|false]
    If set to 1, true or yes using the RDP channel for sound is allowed.

drdynvc=[true|false]
    If set to 1, true or yes using the RDP channel to initiate additional dynamic virtual channels is allowed.

cliprdr=[true|false]
    If set to 1, true or yes using the RDP channel for clipboard redirection is allowed.

rail=[true|false]
    If set to 1, true or yes using the RDP channel for remote applications integrated locally (RAIL) is allowed.

xrdpvr=[true|false]
    If set to 1, true or yes using the RDP channel for XRDP Video streaming is allowed.

CONNECTIONS
A connection section is made of a section name, enclosed in square brackets, and the following entries:

name=<session name>
    The name displayed in xrdp(8) login window's combo box.

lib=../vnc/libvnc.so
    Sets the library to be used with this connection.

username=<username>|{base64}<base64-encoded-username>|ask
    Specifies the username used for authenticating in the connection. If set to ask, user name should be provided in the login window.

    If the username includes comment out symbols such as '#', or ';', the username can be provided in base64 form prefixing "{base64}".

password=<password>|{base64}<base64-encoded-password>|ask
    Specifies the password used for authenticating in the connection. If set to ask, password should be provided in the login window.

    This parameter can be provided in base64 form as well as username. See also examples below.

ip=127.0.0.1
    Specifies the ip address of the host to connect to.

port=<number>|-1
    Specifies the port number to connect to. If set to -1, the default port for the specified library is used.

xserverbpp=<number>
    Specifies color depth of the backend X server. The default is the color depth of the client. Only Xvnc uses that setting. Xorg runs at 24 bpp.

disabled_encodings_mask=<number>
    Set this bitmask to a non-zero value to prevent xrdp(8) requesting some features from the Xvnc server. You should only need to set this to a non-zero value to work around bugs in your Xvnc server. The bit values supported for a particular release of xrdp(8) are documented in xrdp.ini.

code=<number>|0
    Specifies the session type. 0 is Xvnc over TCP, 1 is Xvnc over a UNIX domain socket, and 20 is Xorg with xorgxrdp modules. The default is 0 on non-FIPS systems, and 1 on FIPS systems.

chansrvport=DISPLAY(n)|DISPLAY(n,u)||/path/to/domain-socket
    Asks xrdp to connect to a manually started xrdp-chansrv instance. This can be useful if you wish to use to use xrdp to connect to a VNC session which has been started other than by xrdp-sesman, as you can then make use of xrdp-chansrv facilities in the VNC session.

    Either the first or second form of this setting is recommended. Replace n with the X11 display number of the session, and (if applicable) u with the numeric ID of the session. The second form is only required if xrdp is unable to determine the session uid from the other values in the connection block.

h264_frame_interval=<integer>
    [Xorg only] Specify frame capture interval for H.264 captures in milliseconds.

rfx_frame_interval=<integer>
    [Xorg only] Specify frame capture interval for RemoteFX captures in milliseconds.

normal_frame_interval=<integer>
    [Xorg only] Specify frame capture interval for normal captures in milliseconds.

EXAMPLES
This is an example xrdp.ini:

[Globals]
bitmap_cache=true
bitmap_compression=true

[Xorg]
name=Xorg
lib=libxup.so
username=ask
password=ask
ip=127.0.0.1
port=-1
code=20
h264_frame_interval=16
rfx_frame_interval=32
normal_frame_interval=40

[vnc-any]
name=vnc-any
lib=libvnc.so
ip=ask
port=ask5900
username=na
password={base64}cGFzc3dvcmQhCg==

FILES
/etc/xrdp/xrdp.ini

SEE ALSO
xrdp(8), xrdp-chansrv(8), xrdp-sesman(8), xrdp-sesrun(8), sesman.ini(5)

For more info on xrdp see http://www.xrdp.org/