The general purpose communication interface and related protocols. Specifically, a serial interface transfers one bit at a time ("in serial"), and complies with the RS-232 standard.

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screenlog in multiple files [migrated]

i want to log multiple output of serial lines with screen. I use the following: screen -L /dev/ttyUSB0 115200 screen -L /dev/ttyUSB0 115200 Screen logs the output in ONE single file screenlog.0 ...
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1answer
25 views

expect script running screen stops working when run by cron

I hope this question is OK for this forum. I have a device, a modem. I talk to this modem with the linux program "screen" as a terminal program. I invoke it like this "/usr/bin/screen /dev/tty6". I ...
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25 views

Sun Fire v215 ALOM keyboard input from PuTTY

I'm trying to log in to ALOM on a Sun Fire v215 via PuTTY. I'm using a RJ45->DB9->USB setup plugged into the "SER MGT" port on the back. I'm also using the settings recommended in the installation ...
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22 views

How to get the serial console logs via ethernet port? [closed]

I have a board running Busybox linux and for my debugging activities I always have to connect physically to the serial port to get the serial console prints and logs.I believe using netcat tool we ...
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1answer
23 views

Palo Alto PA-4020 cannot connect to terminal through Serial to USB

I have a PA-4020 that I messed up the configuration on, and I am trying to do a factory reset. I went ahead and ordered a few different serial to USB cables, and cannot connect through a Mac App ...
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1answer
47 views

Tcp connection breaking, too fast for serial?

I've been having real difficulties getting a tcp connection to work with my web server. I think the issue might have something to do with the speed or ordering of the packets as the connection seems ...
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18 views

How do I get Putty or some other remote program to send Control + Keys to a serial port?

I am currently using Putty to access a serial port on an old hardware. According to documentation I got, you need to press ctrl+A in a serial terminal to access the login. However, when using a local ...
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59 views

Serial connection to Cisco C40 not taking input (Putty/Hyperterminal)

I have a cisco c40 video codec that is not accepting the admin credentials that I established for it over SSH/HTTPS. I suspect that the config file is corrupt as there are other erroneous behaviors in ...
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9 views

Raritan serial consoles (DSX) totally unreliable

We have some serial consoles by manufacturer Raritan. More specifically, 8-port and 16-port DSX-8 and DSX-16s. Currently, I seriously doubt their stability. What happens most of the time: Usually, ...
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2answers
112 views

How to replace a hardware modem by virtual modem

I have an embedded device that is connected by an old dial-up modem to the Internet. I cannot change the embedded device but would like to connect the embedded device to a Linux machine that has an ...
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1answer
167 views

hdparm serial number is garbage

I'm trying to read the model and serial number from a drive using "hdparm -I /dev/sda" and I find on some systems (eg: VMware virtual machines) the serial number and model often return garbage (see ...
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1answer
43 views

Telnet, Startech, and a Transmitter

I'm at a bit of a loss and will also preface by saying that I have very little experience working with Telnet. I have Startech Serial over IP 'webserver' setup, everything seems fine on this end. Next ...
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2answers
214 views

how to disable serial console after successful boot (systemd/grub2)

I enable the serial console during the boot process on centos7 which uses grub2 and systemd (instead of inittab) I would like to undo that serial input/output at the very end of the boot, after a ...
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71 views

Grub CLI Arrow Keys Don't Work With IPMI SOL

When I am using the Grub CLI via IPMI sol I am unable to use the arrow keys, as well as some keys such as delete. What happens when I press the Left key I get random 'D' characters appearing, even ...
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3answers
573 views

Is disk serial readable from supermicro chassis?

We are working with a hosting company for managing our dedicated servers. We asked for a replacement disk on one of the servers by providing the serial number. They took out 2 other disks instead and ...
2
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1answer
253 views

udev rule running setserial low_latency don't work

My server runs Ubuntu 14.04.1. I created udev rules in /etc/udev/rules.d/09-pps.rules to get GPS with PPS support work. KERNEL=="ttyS0", SYMLINK+="gps0", MODE="0666" KERNEL=="ttyS0", ...
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68 views

How to enable console support OpenBSD, *BSD for GNS3?

Maybe someone know how to enable console support to activate a serial console access to VM. I can't find solution. Maybe someone know what I need to do step by step. All generic solutions do not work. ...
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1answer
222 views

Two port PCI serial card. One port can only set baud rate once

I have a new PCI serial card, being used on a Ubuntu 14.04 box. It's serial ports show up as /dev/ttyS4 and /dev/ttyS5. $ dmesg | grep ttyS [ 0.732690] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, ...
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1answer
510 views

Using pppd with a serial port?

I just need to send/receive a messages through a unix-socket with PPP. But at first I want to launch the pppd with an usual serial port to make sure I know how it works. As I see, if I bind a pppd to ...
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1answer
371 views

Text on Cisco ASA console is garbled/missing letters

I've actually looked up a number of solutions for this problem and none of them work. There's this Cisco ASA 5505 that I'd like to use, that outputs mildly garbled text with missing characters. I did ...
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1answer
48 views

User privileges enumerating serial device

I'm trying to use the Java Simple Serial Connector on Arch Linux. I have a simple program listed below: import jssc._ object Main { def main(args:Array[String]):Unit = { println("Started") ...
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20 views

Debian as TCP-Server for Serial Port redirecting [duplicate]

I want to start a tcp listener on debian. One client should be able to connect and should get inputs of serial port in the tcp connection. And when the client sends data through the tcp socket the ...
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1answer
51 views

Special Administration Console (SAC) in linux

Windows have Special Administration Console (SAC), same feature is available to linux? Refer http://technet.microsoft.com/en-us/library/cc785873(v=ws.10).aspx
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1answer
129 views

Connecting two routers via serial

I'm new to Cisco and I wanted to connect two routers with serial connection. This is how my network looks now: Maybe I connected them wrong because when I try to ping from PC0 to either PC2 or PC3 ...
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141 views

How to redirect screen display to rs232 in Linux?

I need to redirect all Linux output to rs232 port in order to connect to it via console cable or via ssh or telnet. How to do that? Is it possible to do that wihtout recompiling the kernel?
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80 views

Is there a device with multi auxiliary (AUX) ports to configure multiple devices

Level: Beginner Sorry for the confusing title. I shall try to explain my best to explain my question. Question: Is there a networking device named X that has multiple AUX ports so that I can connect ...
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2answers
2k views

Serial Over LAN on FreeBSD 10.0 with SuperMicro X9-SCM-F

How can I setup Serial-Over-Lan (SOL) on FreeBSD 10.0 with a SuperMicro X9-SCM-F motherboard? There are a few resources out there but they contradict each other, are unclear, and don’t actually allow ...
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1answer
30 views

Serial port - changing settings during usage

I am using one of Gumstix Overo boards, it has OMAP3 CPU, which includes some UARTs. Now, I am wondering what will happen if I will be sending some data on some serial port (for example /dev/ttyO0), ...
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1answer
380 views

How to use a serial bar-code scanner as a keyboard

I have a bar-code scanner connected through serial. I can get the readings (or data) through Putty. I am looking to use the scanner as a keyboard, so that the scanner readings go directly to the text ...
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2answers
889 views

XenServer Guest PV - Serial Port RS232

Is there any way how to forward (passthrough) physical serial port to XenGuest PV system? I need to be able configure serial device with virtual server on XenServer 6.2. I’m looking for some like ...
3
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1answer
265 views

Redirect tty out to serial?

Im trying to debug an issue we are having with netbooting a RedHat box. The anaconda installer scribbles useful log data to the second virtual terminal (Ctrl-Alt-F2) but I would like to be able to see ...
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2answers
100 views

UltraSPARC Serial Port and Required Cable

I have two large SPARC machines and no monitor cable that plugs into them. So I'm trying to get a serial connection to them through null modem cables. However, there doesn't appear to be such ports on ...
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1answer
2k views

Windows serial console

How do I enable a serial console on Windows (2008 and/or 2012) such that I can log into it like the Good Old Days of Real Servers and issue provisioning commands, ideally via PowerShell? $ cu -l ...
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1answer
353 views

pretty-printing IP packets [closed]

I'm receiving IP packets using the SLIP protocol, and I'd like to pretty-print them similarly to how tcpdump does it. My program is able to decode the SLIP protocol and create a single string ...
3
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1answer
684 views

persisting esxi /bootbank/boot.cfg across reboots

i have a serial console connected to my esxi 5.5 server. and the configs work fine for the pxe install. however, upon reboot my console no longer works: i believe i need to change the file ...
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0answers
96 views

Create a symlink to a serial port

I have a software that outputs some info to a text file. Now I want to redirect that output to a serial port. The file name is hard coded in the software. So I decided to create a symlink to the ...
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3answers
2k views

Serial Over Lan doesn't redirect OS terminal

I'm trying to create a monitoring system for a remote machine using an IPMI Serial Over Lan (SOL) console. The remote OS is RHEL 6, the mobo manufacturer is Supermicro. I've successfully enabled SOL ...
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1answer
536 views

Solaris10 Hard Disk Information

I am trying to inventory hard disk information remotely (serial number, disk size, manufacturer...) but am having trouble. I know the drive(s) are configured under a raid controller, but can I view ...
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3answers
5k views

How to diagnose RDP with commandline?

I have a server with 1and1 and they have given up trying to restore RDP access (not trying at all) and told me to re-image the server. As this is a production machine, I'd like to avoid this since it ...
6
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3answers
195 views

Protocol choice for Machine-to-Machine communication - level:n00b

I am building a monitoring system for an irrigation pump and the connected pipeline. So far I have completed the sensor network. Everything connects to a micro-controller board (actually 4 Teensy 3.0 ...
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2answers
7k views

Using Serial to RJ45 cable to connect to a 3Com switch

I have always use a serial to serial port or serial to usb to connect to switches. Normaly they came with RJ45 to usb cable in cases when I had a RJ45 cable to serial. But now I have 3Com switch ...
0
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1answer
158 views

Switch console output to RS232

How can I switch temporally Linux ASCII console to RS232 port build-in computer. I mean about Linux system working as server, without running any graphical tools on it (X11, bootsplash etc). But I ...
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1answer
208 views

FreeBSD Disable Serial Console from Bootloader?

I have a FreeBSD appliance (meaning I can't open the case or I will void the warranty) that was working well until I accidentally clicked 'Enable Serial Console' and rebooted... I went to plug in my ...
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1answer
190 views

Agetty terminating during login on serial connection

I'm trying to login to a server through the serial port using agetty. When I start agetty and open the serial connection, I see the login prompt but as soon as I enter the username (in my case root), ...
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1answer
56 views

minicom cmd not showing

I am using minicom in centos to try to connect to a cisco router. I did the configuration with minicom -s changed the serial port to the appropriate one /dev/ttyS1. Saved as dfl. and Exit. When ...
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0answers
657 views

Serial-Over-Lan with Dell R410. Invalid data field in request

It's a R410 with the latest BMC firmware. I can connect it from a MacBook. $ ipmitool -v -I lanplus -H 192.168.1.23 -U root user list Password: ID Name Callin Link Auth IPMI Msg ...
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1answer
96 views

DB25 printers to pc [closed]

If computer has a single parallel port then how can I connect three paralel printers on this pc ? Print Server seems a solution but seems expensive.However these printers might be far away.Is there ...
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2answers
512 views

How to connect a Mac laptop to a server via the serial port?

I'm a applications guy trying to set up a Dell c6100 server that doesn't boot. We'll have physical access tomorrow. The box has a serial connector for console access. We'll have a MAC laptop. Are ...
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1answer
295 views

Getting VM on ESXi to use COM ports on local (thin?) client

Setup: WinXP VM on ESXi v4.1 infrastructure system, accessible via vSphere thick client and RDP WinXP client (i.e. my laptop) with a device connected to the serial port How do I get the VM to talk ...
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2answers
7k views

Need help setting up an HP Procurve 2650 switch via serial using Linux.

I recently bought an HP Procurve 2650 (J4899A) off ebay and it came out without a serial cable. So I also purchased a null modem serial cable (rs232) to connect to it (Assuming this is the right one). ...