07-24-2014
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.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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)
Discussion started by: piltrafa
4 Replies
2. Programming
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)
Discussion started by: linuxdba
2 Replies
3. UNIX for Advanced & Expert Users
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)
Discussion started by: pileofrogs
1 Replies
4. Shell Programming and Scripting
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)
Discussion started by: MartyIX
6 Replies
5. Solaris
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)
Discussion started by: praset
2 Replies
6. Linux
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)
Discussion started by: vectrum
0 Replies
7. Shell Programming and Scripting
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)
Discussion started by: ajaypadvi
3 Replies
8. IP Networking
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)
Discussion started by: MrCrumbs
0 Replies
9. Shell Programming and Scripting
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)
Discussion started by: Jotne
1 Replies
10. Emergency UNIX and Linux Support
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 CENTOS
portreserve
PORTRESERVE(1) TCP port reservation utility PORTRESERVE(1)
NAME
portreserve - reserve ports to prevent portmap mapping them
SYNOPSIS
portreserve
DESCRIPTION
The portreserve program aims to help services with well-known ports that lie in the bindresvport range. It prevents portmap (or other
programs using bindresvport) from occupying a real service's port by occupying it itself, until the real service tells it to release the
port (generally in its init script).
It is intended that portreserve runs from an initscript of its own, and services wishing to interact with it should use portrelease.
When the portreserve daemon is started, it examines the /etc/portreserve/ directory. Each file not containing "." or "~" in its name is
considered to be a service configuration file, and must contain a service name (as listed in /etc/services) or a port number. UDP services
may be specified by appending "/udp" to the service name, and TCP services by "/tcp". Several services may be specified, one per line.
For example, /etc/portreserve/cups might contain the string "ipp" or, equivalently, "ipp/tcp" and "ipp/udp" on separate lines.
For each service configuration file, a socket is created and bound to the appropriate port. A service wishing to bind to its port must
first run portrelease, which instructs portreserve to release the port associated with the service.
Once all the reserved ports have been released, the daemon exits.
FILES
/etc/portreserve/*
Service configuration files
/var/run/portreserve/socket
communication socket for portrelease
SEE ALSO
portrelease(1)
AUTHOR
Tim Waugh <twaugh@redhat.com>
Author.
portreserve 1 July 2008 PORTRESERVE(1)