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One of the solutions is using telnet with RFC2217 - Telnet Com Port Control Option. Is solves exactly the problem above. There are a lot of software that supports telnet+RFC2217 serial port forwarding. It allows you to run the server and the client on linux or windows machines (and MACs I suppose. IP-KVM switch redirects local keyboard, mouse and video data to a remote. Connect Ethernet to LAN port and/or modem to DB-9 serial port, depending. Windows XP knows a setting named “improve mouse acceleration”, which. Instead, use some kind of wallpaper. XP, Linux and other UNIX-like Operating Systems.

Name

ser2net - Serial to network proxy

Synopsis

ser2net [-c configfile] [-C configline] [-p controlport] [-n] [-d] [-b] [-v] [-P pidfile]

Description

The ser2net daemon allows telnet and tcp sessions to be established with a unit's serialports.

The program comes up normally as a daemon, opens the TCP ports specified in the configuration file, and waits for connections. Once a connection occurs, theprogram attempts to set up the connection and open the serial port. If another user is already using the connection or serial port, the connection is refusedwith an error message.

Options

-c config-file

Set the configuration file to one other than the default of /etc/ser2net.conf

-C config-line

Handle a single configuration line. This may be specified multiple times for multiple lines. This is just like a line in the config file. This disables thedefault config file, you must specify a -c after the last -C to have it read a config file, too.

-n

Stops the daemon from forking and detaching from the controlling terminal. This is useful for running from init.

-d

Like -n, but also sends the system logs to standard output. This is most useful for debugging purposes.

-P pidfile

If specified, put the process id (pid) of ser2net in the pidfile, replacing whatever was in that file previously. A pidfile is not created by default, youmust specify this to create one. Note also that this filename must be specific with the full path, as ser2net will change directory to '/' when it becomes adaemon. when it

-u

If UUCP locking is enabled, this will disable the use of UUCP locks.

-b

Cisco IOS uses a different mechanism for specifying the baud rates than the mechanism described in RFC2217. This option sets the IOS version of setting thebaud rates. The default is RFC2217's.

-v

Prints the version of the program and exits.

-p controlport

Enables the control port and sets the TCP port to listen to for the control port. A port number may be of the form [host,]port, such as 127.0.0.1,2000 orlocalhost,2000. If this is specified, it will only bind to the IP address specified for the port. Otherwise, it will bind to all the addresses on the machine.

If the port number is zero, that means that standard in/out will be used for the only input/output, and only one port should be specified in the config.This way, it can be used from inetd.

Control Port

The control port provides a simple interface for controlling the ports and viewing theirstatus. To accomplish this, it has the following commands:

<TCP port>:<state>:<timeout>:<device>:<options>

or

TRACEFILE:<tracefile name>:<tracefile>

Fields

TCP port

Name or number of the TCP/IP port to accept connections from for this device. A port number may be of the form [host,]port, such as 127.0.0.1,2000 orlocalhost,2000. If this is specified, it will only bind to the IP address specified for the port. Otherwise, it will bind to all the ports on the machine.

state

Either raw or rawlp or telnet or off.off disables the port from accepting connections. It can be turned on later fromthe control port. raw enables the port and transfers all data as-is between the port and the long. rawlp enables the port and transfers all inputdata to device, device is open without any termios setting. It allow to use /dev/lpX devices and printers connected to them. telnet enables the port andruns the telnet protocol on the port to set up telnet parameters. This is most useful for using telnet.

timeout

The time (in seconds) before the port will be disconnected if there is no activity on it. A zero value disables this funciton.

device

The name of the device to connect to. This must be in the form of /dev/<device>.

device configuration options

Sets operational parameters for the serial port. Values may be separated by spaces or commas. Options 300, 1200, 2400, 4800, 9600, 19200, 38400,57600, 115200 set the various baud rates. EVEN, ODD, NONE set the parity. 1STOPBIT, 2STOPBITS set the number of stop bits. 7DATABITS,8DATABITS set the number of data bits. [-]XONXOFF turns on (- off) XON/XOFF support. [-]RTSCTS turns on (- off) hardware flow control.[-]LOCAL ignores (- checks) the modem control lines (DCD, DTR, etc.) [-]HANGUP_WHEN_DONE lowers (- does not lower) the modem control lines (DCD,DTR, etc.) when the connection closes. NOBREAK Disables automatic clearing of the break setting of the port. remctl allows remote control of theserial port parameters via RFC 2217. See the README for more info. <banner name> displays the given banner when a user connects to the port.

tr=<filename> When the port is opened, open the given tracefile and store all data read from the physical device (and thus written to theuser's TCP port) in the file. The actual filename is specified in the TRACEFILE directive. If the file already exists, it is appended. The file is closed whenthe port is closed.

Equipment used for the hack (Source )La-Cara that could be assembled with $2,000 components is placed on an ATM machine, is emulates the presence of the EMV card inserted into the card slot. How to hack any atm in south africa. It’s really just a card that is capable of impersonating a chip. The data stolen by the shimmer are remotely sent to the La-Cara device which instruct the ATM to withdraw money from the card.“The modifications on the ATM are on the outside,” Tod Beardsley, a security research manager for Rapid7, the BBC.“I don’t have to open it up.

tw=<filename> Like tr, but traces data written to the device.

tb=<filename> trace both read and written data to the same file. Note that this is independent of tr and tw, so you may be tracing read, write,and both to different files.

banner name

A name for the banner; this may be used in the options of a port.

banner text

The text to display as the banner. It takes escape sequences for substituting strings, see 'FILENAME AND BANNER FORMATTING' for details.

tracefile name

A name for the tracefile, this is used in the tw, tr, and tb options of a port.

tracefile

The file to send the trace into. Note that this takes escape sequences for substituting strings, see 'FILENAME AND BANNER FORMATTING' for details. Notethat when using the time escape sequences, the time is read once at port startup, so if you use both tw and tr they will have the same date and time.

Blank lines and lines starting with '#' are ignored.

Filename and Banner Formatting

Filenames and banners may contain normal 'C' escape sequences:

a - bell
b - backspace
f - form feed
n - newline
r - carraige return
t - tab
v - vertical tab
-
? - ?
' - '
' - '
nnn - octal value for nnn
xXX - hex value for XX

They may also contain, d for the device name and p for the TCP port number.

A banner may contain s for the serial port parameters (eg 9600N81) of the given connection.

A filename may also contain the following sequences:

Y -> year
y -> day of the year (days since Jan 1)
M -> month (Jan, Feb, Mar, etc.)
m -> month (as a number)
A -> day of the week (Mon, Tue, etc.)
D -> day of the month
e -> epoc (seconds since Jan 1, 1970)
U -> microseconds in the current second
p -> local port number
d -> local device name
I -> remote IP address (in dot format)
H -> hour (24-hour time)
h -> hour (12-hour time)
i -> minute
s -> second
q -> am/pm
P -> AM/PM

These sequences may be used to make the filename unique per open and identify which port/device the filename was for. Note that in filenames when using d,everything up to and including last / in the device name is removed, because you can't have a / in a filename. So in a filename /dev/ttyS0 would become justttyS0.

Security

ser2net uses the tcp wrappers interface to implement host-based security. Seehosts_access(5) for a description of the file setup. Two daemons are used by ser2net, 'ser2net' is for the data ports and 'ser2net-control' is for thecontrol ports.

Signals

hosts_access(5)

Known Problems

None.

Author

Corey Minyard <minyard@acm.org>