Currently I run a number of network tests using netcat that checks for an open port on a remote IP-address, using this syntax:
Code:
netcat -v -w 5 -z 107.249.95.5 4488
For some reason, the netcat command above is hanging (although others work fine), but a telnet is showing a valid connection like below:
Code:
% telnet 107.249.95.5 4488
Trying 107.249.95.5...
Connected to 107.249.95.5.
Escape character is '^]'.
^]
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.
Then why is my telnet connecting (or appearing to)?
Who says I am brute-force-scanning all these ports, I am testing specific IP addresses and ports over a VPN to a real-time application service that I need to ensure 24/5 availability on.
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)
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)
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.
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Hi;
I have a url like
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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)
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)
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)
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)
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
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