Ubuntu :: Listen To A Serial Port With The Terminal?
Apr 16, 2011I would like to listen to a virtual serialport (dev/ttyACM0). I heard you can this with the terminal in Linux. But how? Does anyone know some commands?
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CentOS 5 :: Using USB Port For Serial Terminal?
Apr 27, 2009The /dev directory on my system shows the following entries:
/dev/tty
/dev/tty0
/dev/tty1
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Networking :: Setting Up Serial Communication From Desktop Through USB Port In Terminal?
Jan 15, 2010I am new to linux terminal programming and all but i want to set up a simple serial communication from my desktop through USB port. The actual idea to to write some data in the terminal and build a terminal program that sends the data to the usb port with a fixed baud rate. are there ready made terminal programs available for this simple communication?or atleast any Graphical tools which could help me build and design such a terminal in ubuntu 9.04?
View 8 Replies View RelatedUbuntu Networking :: Error - Remote Port Forwarding Failed For Listen Port 5500
Aug 7, 2010When I use the following command:
ssh user@ssh_server -L 5500:localhost:5500 -p 22
everything works fine. I can log in, and local port forwarding is done. Otherwise when I use the command:
ssh user@ssh_server -R 5500:localhost:5500 -p 22
I get an error "remote port forwarding failed for listen port 5500". However when I try remote port forwarding in WinXP by use of putty there is no problem...
General :: Warning: Remote Port Forwarding Failed For Listen Port 7869
Jul 20, 2010I tried to make "ssh tunneling", but failed and got this message.
Quote:
Administrator@windstory-PC /
$ ssh -R 7869:localhost:7869 windowsstudy@192.168.0.4
windowsstudy@192.168.0.4's password:
Warning: remote port forwarding failed for listen port 7869 Last login: Wed Jul 21 01:56:04 2010 from 192.168.0.2 -bash-3.2$
1. system environment
192.168.0.2 - windows 7 + copssh
192.168.0.4 - centos 5.4 x86 + openssh
2. Guide for setting "ssh tunneling"
[URL]
3. Added this to sshd.conf
Quote:
AllowTcpForwarding yes
4. "netstat -na|grep 7869" at 192.168.0.4
Quote:
[root:maestro:~]# netstat -na|grep 7869
tcp 0 0 0.0.0.0:7869 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:7869 127.0.0.1:53539 ESTABLISHED
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5. result of "ssh -vvv -R 7869:localhost:7869 windowsstudy@192.168.0.4"
Quote:
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
[code]....
6. I added 7869 for telnet service as follow;
Quote:
mytelnet 7869/tcp # My Telnet server
Networking :: MULTICAST Address And Port - Socket Listen Only On Port?
Feb 12, 2009I make an application on GNU/Linux which listening on a MULTICAST stream, so I open my unconnected socket, bind it on a MULTICAST address and a port, join the multicast group with the "setsockopt (IP_ADD_MEMBERSHIP)", then I receive datagram on my socket.
Now I've two different instances of the same application that run with their own MULTICAST address and port. And what I found strange is that, after a misconfiguration, I switch the ports, for example:
Emitting on 225.0.0.1/23451 and 225.0.0.2/23452
Receiving on 225.0.0.1/23452 and 225.0.0.2/23451
And my receiving part doesn't care about the MULTICAST address, it looks like the socket is listening on the port number only! I mean that the receiver [225.0.0.1/23452] take its datagrams from emitter [225.0.0.2/23452] and vice-versa!
General :: Windows With Putty Via USB Serial Cable To Serial Port - Output Ok, Input Isn't?
Jan 13, 2010I am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5).I have /sbin/agetty -L 9600 ttyS0
in /etc/inittab. I am using a generic USB to serial adaptor on Windows (Unitek) and a null modem cable. I have putty configured for 9600 baud, 8 bits, no parity, one stop bit, no flow control.I get the login prompt from agetty in the putty window but input does not work; I see weird characters in the putty screen. I can echo output into the device from windows and see it, but
cat < /dev/ttyS0. just prints out weird characters from what I type.
Software :: Connect A Serial Cable To The Serial Port?
Mar 23, 2010We have a new machine with RedHat enterprise 5 on it. I need to connect a serial cable to the serial port and talk to another system (old alpha system) instead of using a VT connected to the alpha.Does RedHat come with anything like Keaterm/hyperterm/etc etc?
View 3 Replies View RelatedOpenSUSE :: Set RxtxSerial - Java App Has Access To A Serial Port (via SiLabs CP210x Driver, Port /dev/ttyUSB0)
May 10, 2010I'm trying to set rxtxSerial to work so a Java app has access to a serial port (via SiLabs CP210x driver, port /dev/ttyUSB0). When I use update-alternatives --config java, there are 3 alternatives which provide `java'. I have tried openJDK and Sun. Both fail but with completely different messages.
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Ubuntu :: Get Proftpd To Listen On A Port Other Than 22?
May 23, 2010I'm running Ubuntu 9.10, and am trying to get proftpd to listen on a port other than 22. I've modified the proftpd.conf file, as well as adding the desired port to my /etc/services file, yet if I try anything other than port 22, the connection is refused.
View 3 Replies View RelatedUbuntu :: X Windows - How To Listen On TCP Port
Feb 6, 2011It appears that X Windows under Ubuntu (or Gnome?) is started to listen to a Unix named socket, instead of a TCP port number, for client connections. That's what SSH is forwarding when it does X forwarding. I need to start X applications on a remote machine, and then close the SSH connection. So I need to make the connections directly. This is within a LAN on private IPs, so security is not an issue. I searched on help.ubuntu, but there appears to be no particular document that covers this. Anyone know where this is configured to enable it to listen on a TCP port like the usual 6000?
View 6 Replies View RelatedSoftware :: What Port Does KVM Listen On
Jan 16, 2011I just installed KVM on a new system and just found out the hard way that virt-manager cannot be installed on the same machine because of a library conflict, so I will have to manage my VMs from another machine. I will use a SSH tunnel to forward the port, but I don't know what it is. Also, how do I start KVM?
View 4 Replies View RelatedUbuntu :: Change VNC Server Listen Port?
Dec 30, 2010I wish to use the VNC server built in to the Ubuntu to easily access it from other computers on my local network. I need to skew the VNC Server port off of the normal 5900 to something else because I am using VNC to access several computers (sometimes simultaneously) so each VNC server needs to be set with a different port #. At this point it is all local subnet connections with no incoming internet access and I am not worried about security.
View 2 Replies View RelatedGeneral :: Why Port 80 Won't Listen On Squid
Aug 20, 2009Can't seem to access my squid server on port 80. I have port 80 allowed in the conf for this IP. apache is listening to port 80 but only on the 2nd IP. iptables is allowing through port 80 incoming nmap shows no ports open on 80 though:
Code:
Starting Nmap 5.00 ( http://nmap.org ) at 2009-08-20 11:19 BST
NSE: Loaded 0 scripts for scanning.
Initiating SYN Stealth Scan at 11:19
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Ubuntu Networking :: Bluetooth - SPP Mode / Listen (and Also Send) To Serial Comm Msgs On Bluetooth?
Jun 25, 2010i have a bluetooth modem (BlueSMiRF) that is connected to Arduino Duemilanove. I am trying to see serial communication messages from the bluetooth modem.
I have Blueman Device Manager that enabled SPP (Serial Port) and it says :
Code:
Serial port connected to /dev/rfcomm0
How do I see the serial communication on this?
I tried on console
Code:
$rfcomm listen 0
but it's stuck at
Code:
Waiting for connection on Channel 1
Is there any other way to listen (and also send) to serial comm msgs on bluetooth?
General :: How To Find What Program Is Listen On Port 80
Apr 14, 2010I've killed apache via /etc/init.d/apache2 stop, but something is still listening on port 80:
Code:
root@www:/etc/apache2/sites-enabled# netstat -an | grep LISTEN | grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8022 0.0.0.0:* LISTEN
unix 2 [ ACC ] STREAM LISTENING 5806 /var/run/mysqld/mysqld.sock
How do I find out that program this is?, or how to I stop it listening?
Networking :: Accomplish Is Have Postfix Listen On Port 587?
Jan 30, 2010I tried searching and tried different things and have failed miserably. What I am trying to accomplish is have postfix listen on port 587. I have read that I should do this using Linux Firewall rules as to not mess with postfix config. Here's what I have in my ip6tables.
Code:
iptables -t nat -A PREROUTING -p tcp --dport 587 -j REDIRECT --to-ports 25 However, when I restart ip6tables I get unknown arg --to-ports
Ubuntu Servers :: Make Server Listen At Different Port For HTTP?
Apr 6, 2010How can I set my server to listen at a different port for http access. I would like to use port 8080 (to circumnavigate isp blocks). Also can I do the same thing for sftp connections?
View 3 Replies View RelatedFedora Networking :: Apache Listen To Assigned Port 80
Aug 29, 2010On Fedora 13 is there anywhere else on the system that I have to change to get Apache to Listen to an assigned port, something other than 80. Suppose for instance I wanted Apache to Listen on port 94. I told by the site that their router is forwarding apache to port 94. That doesn't mean I change the Listen in httpd.conf. correct. Apache is still expecting connection on port 80 but in this case 80 then gets forwarded in the router to 94. This is my understanding.
View 5 Replies View RelatedSoftware :: Identify The Status Of Serial Port ("Port Already Opened") From A C Program?
Feb 5, 2010I am writing some application in C, which will access a serial port device (RS232). My application is working good. But if any other application is already opened the port, I couldn't able to identify that. In windows VB program, while accessing comport through mscomm control, i am receiving an error as "Port Already Opened". But in Linux environment, through C program how can i get that? I am accessing comport 1 as follows
fd = open("/dev/ttyS0", O_RDWR | O_NOCTTY | O_SYNC);
Ubuntu :: Listen To Music Via Virtual Terminal?
May 27, 2010I imagine I'll have to install something, but Google has shed no light for me thus far. And just to clarify, when I say virtual terminal I mean the terminals accessed by CTRL+ALT+(F1-F6). I'm going to be doing a challenge/learning experience where I don't allow myself a graphical interface for a month. way around BASH through adaption. However, if I have to go a month without music I will go insane.
So, even if this is possible can I listen to music from the internet (....., playlist.com, etc.) or just music on my hard drive? And I'm not sure if this thread belongs in Desktop Environments or not, that section seemed to focus on graphical interface.
CentOS 5 Server :: Configure Maia Mail Guard To Listen On Port 443?
Mar 1, 2010I was just wondering what I have to edit in order to get Maia Mailguard to listen on port 443 instead of port 80
right now I am logging on with [URL] but I would like to connect to [URL]
Ubuntu :: Serial Port Access On 10.04?
Apr 27, 2011ive been looking through several online documents and forum posts but i cant get a clearcut answer on how to set up serial port acces in ubuntu 10.04 (server).
View 7 Replies View RelatedUbuntu :: How To Login On Gnome/X Via Serial Port
Jan 16, 2010I'm writing a point-of-sale application in Perl/Tk, to run on Ubuntu. For cashier accounts, I plan to just use normal Linux accounts. Cashier login will be done by scanning a badge with a barcode ID on it. Our barcode scanners are older serial-port types. Thus, I'd like to login to the X (Gnome) desktop, yet read the username (and password) via a serial port such as /dev/ttyS0.
View 3 Replies View RelatedUbuntu :: Unable To Read The Serial Port
May 23, 2010I am using a F232 USB to serial adapter for connecting my wireless modem to my laptop and I wrote a simple C code for reading data received by the modem transmitted by another modem installed on my target device.The problem is my code is simply giving 0.00000 (float data) output .When I use the same code with my desktop its running fine and I am getting relevant data.What may be the problem? I even changed the permission for my /dev/ttyUSB0 I am using Ubuntu 10.04 on both my laptop and desktop
below is my code
Code:
#include <stdlib.h>
#include <math.h>
#include <errno.h> /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */
[code]....
Ubuntu :: Serial Port Emulation In Windows
Apr 5, 2011I am trying to use one serial port simultaniously for two different programs. I have a two programs that use GPS information that I would like to run at the same time. At this time only one program at a time can access a serial port. I have found a way to emulate this in Windows so that I can have both running, now I'm trying to do the same in Ubuntu. Is it possible? If yes, How? The GPS receiver is connected via a USB port.
View 1 Replies View RelatedFedora Servers :: Serial Port On Fed 12
Mar 25, 2010Can anyone one give me some pointers please, for talking to a serial port, if I use cutecom it always returns "could not open /dev /tty0 or 1 or 3 or 4, even tried ttys0 etc
View 7 Replies View RelatedFedora :: How To Connect To Serial Port?
Jan 19, 2011i would like to connect to my cisco via a console port and i dont konw how
View 13 Replies View RelatedGeneral :: How To Know Which /dev/ttyS* Is My Serial Port
Apr 14, 2010I have a laptop which has only one serial port.
I went into:
How do I know which of those "ttyS" refers to my serial port?
Hardware :: Reading Serial Port With C?
Aug 12, 2010I have two usb2serial adapters connected to my PC with a null modem (I am doing some testing to learn serial comm for a particular application). I am writing to /dev/ttyUSB0 a trying to read /dev/ttyUSB1. I have used screen (screen /dev/ttyUSB1 115200) and am able to see the characters being written. I am also able to read and write with Python with the following code
Code: import serial,time,sys
ser1 = serial.Serial('/dev/ttyUSB0',baudrate=115200)
ser2 = serial.Serial('/dev/ttyUSB1',timeout=2,baudrate=115200)
ser1.open()
ser2.open()
[Code]....