Currently I run a number of network tests using netcat that checks for an open port on a remote IP-address, using this syntax:
For some reason, the netcat command above is hanging (although others work fine), but a telnet is showing a valid connection like below:
Normally with my other netcat tests, I see an immediate result like this:
aaaa.XXX.com [102.19.5.62] 22 (ssh) open
aaaa.XXX.com [102.19.5.62] 23 (telnet): Connection timed out
The only thing different/interesting about the 107.249.95.5 address is that it is over a VPN to an MQ server.
Any idea why this network test is failing, even though its obviously connectable over telnet. If it matters, I am running this on a Solaris 10 box.
Hi there, I've an stupid question. If I make a telnet to a server from my computer and then execute a command that starts an application (on the server), when I disconnect, the application stops running, which is pretty obvious. Is it possible to add a flag at the end of the command so when I cut... (4 Replies)
Hi Folks
I am not a c programmer .But i need help in writing a program which can do this any ideas on how to go about it .
i start a server on the target server where files need to be copied
start-server -port 5006 & ---start the server and listen it on a partcular port
on the source... (2 Replies)
I'd like to do a data transfer without encryption but with a guarantee that my data comes from a legit source. I'm thinking something that uses a public key scheme to sign the data.
Does anyone know of something like that?
Thanks!
-Pileofrogs (1 Reply)
Is there a way how to react on the message a client sent to the server?
I would like as the client sent message to server: "get information such and such" and server would answer.
Thank you for reply! (6 Replies)
hello guys, i want to install netcat on my solaris. after i tar and gunzip netcat i'm confuse what do i must to do ? please help me to install netcat on my solaris. I'm beginner :( (2 Replies)
Hello,
Thank you very much for the line nc -lp <port> . I tried to run simple chat session with nc as it's shown in catonmatDOTorg but failed miserably with that syntax inspite of opening port 7777 by iptables . But your command example is working nicely.
So a bagful of thanks :))
Only one... (0 Replies)
Hi;
I have a url like
http://localhost:8080/examples/jsp/dates/nextPageToPost.jsp?name=ajay&password=pas&sex=Male&check=on&nationality=USA&description=aa&submit=submit
in which i want to use nc for http post for parameters like "name","password"....etc
can neone please help me how to do that... (3 Replies)
Hi all,
I know my question is regarding Windows and not Linux, but I simply need people who know Netcat pretty well and I'm guessing here is a good place for that. So on with my question.
I'm doing some research, and I was playing around with netcat on a WinXP VM but I can't seem to get... (0 Replies)
Hi
Need help to connect from Ubuntu to Windows using NetCat nc
I can not get my script to send new-line
Her is what I have tried(sleep 2 ; echo user ; sleep 1; echo pass; sleep 2; echo netstat) | nc -t 10.10.10.34 23
gives this outputÿý%ÿûÿûÿý'ÿýÿýÿûWelcome to Microsoft Telnet Service
... (1 Reply)
Dear Linux guru's
I am trying to create a webserver using nc (netcat only) on RHEL 7.2 running on bash shell.
now the easy thing is to get nc listing to a port and respond back
$ while true; do { echo -e 'HTTP/1.0 200 OK\r\n'; set; } | nc -l 7877; done
This when called from a... (3 Replies)
Discussion started by: chakrapani
3 Replies
LEARN ABOUT PLAN9
ppp
PPP(1) General Commands Manual PPP(1)NAME
pppclient, pppserver - point to point protocol
SYNOPSIS
pppclient [ -d ][ -b baudrate ][ -i myipaddr ][ -p peeripaddr ][ dialdevice ]
pppserver [ -d ] ndev myipaddr firstipaddr firstdev [ baud0 baud1 ... ]
DESCRIPTION
The Point to Point Protocol is used to encapsulate Internet Protocol packets for transfer over serial lines or other protocol connections.
Pppclient makes a connection to a PPP server and passes IP packets over the connection. If dialdevice is omitted, standard input and out-
put are used as the connection. If dialdevice begins with a slash, pppclient assumes it is a file name, open(2)'s it, and uses the result
as the connection. Otherwise, dialdevice is passed as the destination address to dial(2) to set up the connection.
If the connection is successful, pppclient creates a pipe, pushes the IP line discipline onto it, and sets the local and remote addresses
of the IP interface to myipaddr and peeripaddr. It then loops transferring packets between the pipe and the connection. If either myi-
paddr or peeripaddr is omitted, pppclient requests them from the server.
The options are
d print debugging information.
b baud rate of the serial line.
p peer ip address (in case the peer asks for its ip address over IPCP).
i the local ip address to be established for this connection.
Pppserver treats serial lines as PPP connections, switching packets between them and the local machine. It creates a pipe for a local IP
interface (address myipaddr), opens a set of serial lines, and switches packets between the local interface and the serial lines. Ndev
specifies the number of serial devices to serve. The devices are named /dev/eia{firstdev} through /dev/eia{firstdev+ndev-1}. Their remote
IP addresses are firstipaddr through firstipaddr+ndev-1. The default baud rate is 9600. If any arguments follow firstdev (baud0, baud1,
...), they are used as baud rates for the serial lines. The only option, -d, turns on debugging output.
Both pppclient and pppserver accept all options defined in RFCs 1331 and 1332.
EXAMPLES
Start up a server for serial lines /dev/eia[2-6] with remote IP addresses 131.107.1.100 through 131.107.1.103 and baud rates of 19200,
2400, 9600, 9600. The local IP address is 131.107.1.1.
pppserver 4 131.107.1.1 131.107.1.100 2 19200 2400
SOURCE
/sys/src/cmd/ppp
PPP(1)