How To Kill UDPv4 Connections On Googlephone With Rudimentary Linux Shell?

Hi all,
I am brand new to Linux, playing around a bit with different things to see how I can use it in the future. Here is my problem:

I have written a simple program in Ada that works well on windows. It opens a TCP port (20000) and listens for incoming connections. I tried it on my internal network and it works well. I can connect from other windows machines and even from my Linux machine.

Now I moved the program to Linux and compiled it there. It starts ok and then listens for the connections. I can connect to it from that same Linux machine but not from any other machine on my network.

I checked the firewall status on Linux with ufw status and it is disabled. I also tried to add a rule to the iptables with
iptables -A INPUT -p tcp --dport 20000 -j ACCEPT

but still nothing. I can not connect from another machine on my network. I also tried to open a simple telnet connection from a windows machine and that too is blocked. I thought without the firewall all incoming connections would be allowed but obviously something is not working as I thought.

Any help would be greatly appreciated

There is a home grown application that initiates either a telnet or ssh session based on the number of threads set.

I want to watch the process happen from start to finish, that is from the moment the first thread starts until the last thread finishes.

I was thinking netstat, but it wont show the process in its entirety. As connections are established and terminated the status / output of the command would be different..not to mention Id have to keep hitting the command and the enter key.

As usual, I have cracked my Linux in a nutshell book and will be doing web searches to find a solution.

Hi
I am not brand new to Linux but have been using a very popular Linux distro which has pretty much made everything easy for me in day to day use
I do distro hop quite a bit on my spare laptop and have tried many distros i came across Antix 13.2 which i really love and is a superb distro in terms of speed and increasing my learning curve in linux systems and was easyish to set up via wicd (just involved writing in wlan0) and that was it
One thing i can never get the hang of though and would love a complete idiots guide to is the wifi set up in some distros i have discarded because i just do not understand how to set it up
This evening i tried Sparky Linux on a usb and would love to have tried it but the wifi problem surfaced again
a box comes up re edit connections and from there i have no idea at all what to do what i normally do is disregard that distro and move on! But i would like to be able to input the info to get it working..any ideas please
Many Thanks

The Internet connection icon in the notification area of my desktop panel shows the status of my computer's connection to my LAN and hence to the www – at least, it did from the date of first connection, in late 2013, until about December of 2014. It was infallible. Then, shortly before Christmas last year, router trouble on the LAN meant that no Internet service was available for the best part of a week whilst repairs/replacements were effected. Restoration of the LAN brought all four of my computers back on line (1 Linux Mint and 3 Windows XP) Ostensibly nothing had, nor needed to be, changed, as far as net connection addresses were concerned. The XP computers simply picked up where they had left off some days earlier but the Linux machine returned with a disabled LAN connection icon that has remained in that state ever since. Nothing else is affected, I continue to log on and off as normal and enjoy the same network services as before but nothing will now persuade the connection icon to change its disconnected state. If I right click the icon, and then click 'Connection Information', I get, “No valid active connections found,” which is at complete variance with the facts. I have used the 'Edit Connections' option but can find nothing apparently amiss. Wired Connection 1 appears to have retained its previous settings so the loss of function is a bit of a mystery. Anyone got any ideas?

Hi everyone, I am a new member and also new to linux, I encountered a problem, but last week I tried but did not solve
I downloaded iso file linux 1.1.0 on page potassium https://www.kali.org, I installed on my Dell inspiron n4010, it works very well and does not have any errors, but after I update and upgrade all packages, I rebooted the system switches to the command line, I lost a lot of time to return to the graphics, but when booting up the network manager icon not seen, I have set the package network-manager-gnome_0.9.4.1-0ubuntu2_i386.deb network manager icon show but when click on the network manager icon only contained text "network manager is not running."
I also installed Wicd but could not run "could not connect to wicd's D-Bus interface. Check the wicd log for error messages."
wireless driver apparently was set before
root@kali:~# airmon-ng
PHY Interface Driver Chipset

phy0 wlan0 wl Broadcom Corporation BCM4313 802.11b/g/n (rev 01)

please help me!
please guide installed offline, my kali linux no internet connection. can download package from another machine to install.

Hiya,

I normally read until I find an answer but I am stuck so here goes:

I have unlimited satellite broadband between 00:00 and 06:00am, out of that time I have to be careful so backing up my site needs to happen then - I would like to learn how to do it on the command line.

Here' where I am at:

lftp [my bookmark]

[set local directory]
at:2359
mirror --use-pget-n=5 [remote folder]

I am using a low tech electic timer as a killswitch on my router -
is a command line 'kill switch' possible:

at 0600 kill all ?

Yesterday I though I ended the proces but I had not - must have been a typo - and it carried on and on and on.

I would like to automate it into a script to run periodically eventually - but that is another job.

Thanks

Hello,
I am trying out a GNU-plus-Linux distribution called "Tails" for the first time. Tails is the distro that provides anonymity for the user by forcing all network traffic to go through the Tor network system. I am testing out Tails version 1.4.
Tails is a live DVD disc. It boots in live mode directly from the DVD and optical drive.
However, once I was booted into the desktop for the first time, it seems to not have been able to automatically find and configure my internet connection.
When I hover the pointer over the twin PC's icon in the system tray at the top right hand corner it says "No network connection".
Then, just to make sure, I opened the "Tor browser" and it gave me an error message that says "The proxy server is refusing connections".
Then to make triple sure, I opened the "Unsafe web browser" and it gave me the error message that says "Error No DNS server was obtained through DHCP or manualy configured in Network Manager".
So as a new user of this distro, I'm not sure on where to go and what to do. So any help would be greatly appreciated.
Thank you

Hi, I'm running Linux Mint 17.1 and the Internet connections generally works well but sometime it is slow and pages take many seconds to load or the connection fails.
The driver is the wikidevi suggested for my card and signal is good, do you have any idea about this problem ?

Thanks

hi folks , total linux noob here hopefully somebody can help me with a problem
i wanted to try out linux mint on my apple imac and i seem to have ended up with this ramdisk or memdisk which is some sort of security version of linux

this damn thing has total root access and has setup all sorts of remote server connections and wont let me do a bloody thing , even format a usb stick

its corrupted my apple install and base efi and just got me on total lockdown

anybody know how to get rid of this ? please

I am having a problem when trying to start my Android emulator (versions 2.2 or 2.1 or 4.3).

It says this:
"Starting emulator for AVD 'Android4-3'
ERROR: 32-bit Linux Android emulator binaries are DEPRECATED, to use them
you will have to do at least one of the following:
- Use the '-force-32bit' option when invoking 'emulator'.
- Set ANDROID_EMULATOR_FORCE_32BIT to 'true' in your environment.
Either one will allow you to use the 32-bit binaries, but please be
aware that these will disappear in a future Android SDK release.
Consider moving to a 64-bit Linux system before that happens."

Now, I am launching this Android Virtual Device from a GUI, and I'm actually somewhat confused as to how I'm supposed to find what command to use to to launch the emulator and not the GUI (and more generally, how to find what commands to use in a GUI situation).

Sorry if I missed some important information, I am pretty new to Linux.