Can’t connect to reverse shell – connection waits forever

I’ve setup a simple Kali Linux machine on AWS and added a security group where all ports are open, then I executed:

nc -vlp 4444 

Now, in my own personal computer I execute a simple Go program:

package main  import (     "fmt"     "net" )  const IP = "MY_PUBLIC_IP:4444"  func main() {     conn, _ := net.Dial("tcp", IP)     fmt.Println(conn) } 

Nothing really happens, the connection waits until it timeouts. Am I missing some configuration?

Thank you.

Cambiar el connection string en tiempo de ejecucion

tengo una cadena una aplicacion hecha en, esta aplicación la corro en dos o tres redes diferentes, existe alguna manera de que se testee la conexion a una base de datos y si no responde utilice otra cadena?? si Conexion1 no anda utilizar Conexion2

utilizo entity Framework para conectarme a las bd.

mi idea es algo asi:


How to Configure Ubuntu to Access Internet only with Wifi Ignoring Wire Connection (Ethernet)


  • the Wifi connection works perfectly with the DHCP of the router. Only with this connection, I can navigate the web.
  • the wire connection is necessary for me to be connected directly with an embedded system. In the middle there is a Switch and the only things I do is to set up the address IP of both (laptop and embedded system). The systems speak perfectly using ssh etc. No problem here.
  • OS Xubuntu 16.04 on my laptop and a Linaro on the embedded.

Problem: When I am connected to the system with the ethernet connection, it is impossible for me to navigate on the web. I guess it is because the laptop try to access using the ethernet connection. Of course, the ethernet connection goes only to the embedded system.

Question: Can I use the ethernet only for the system and the wifi to continue to navigate the web pages? How can I do that?

Wifi connection wont continue without being next to wifi

So I found I have two accounts for asking the Ubuntu community. I sadly can’t remember the passcode for the other one so here we are again. I’ve since gone to Ubuntu 18.04 and thought that getting off of yakkety would correct the problem. However it did not. I’m working with a macbook a1181 ubuntu 18.04 with wifi card AR242x. I’m not sure where to begin and I’m rusty as I was off this computer for a while do to another issue i had experienced that corrected itself. any starting point would help.

The site recommends including code proof of my wifi card and didnt know what line of code to cut from this so using lspci here is what generated

00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 00:07.0 Performance counters: Intel Corporation Device 27a3 (rev 03) 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 02) 00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02) 00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02) 00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [IDE mode] (rev 02) 00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02) 01:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller (rev 22) 02:00.0 Ethernet controller: Qualcomm Atheros AR242x / AR542x Wireless Network Adapter (PCI-Express) (rev 01) 03:03.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev 61) 

Cannot initiate the connection to

this issues had been in my life for 2 weeks and i was unable to figure it out. My domain name was hosted by 1&1 and my website is hosted by my own ubuntu 18.04. I have no issue to ping anywhere and my website has no issue to visit. However I cant update or upgrade my Ubuntu server with the following error message: my nameserver shows this: nameserver options edns0

Thank you in advance for help.

$ sudo -E apt-get update Err:1 bionic InRelease Cannot initiate the connection to (2001:67c:1560:8001::1 1). – connect (101: Network is unreachable) Cannot initiate the connection to ar (2001:67c:1360:8001::21). – connect (101: Network is unreach able) Cannot initiate the connection to (2001:67c:1360:800 1::17). – connect (101: Network is unreachable) Cannot initiate the connection t o (2001:67c:1560:8001::14). – connect (101: Network is unr eachable) Could not connect to (, connection timed out Could not connect to (, connection timed out Could not connect to (, connectio n timed out Could not connect to (, connectio n timed out

wifi connection failed

I have ubuntu and windows in my pc and every thing was working well. But yesterday when I was working in ubuntu wifi become disconnected and it (and any other wifi conection) don’t connect any more. And in windows i can connect to it easily. Now when I run ubuntu, it trys to connect to wifi automaticaly but it can not evry times and say “connection failed” and trys again… Can some one say me what should i do? remember that I can not use internet to inestall any packages.

How to resolve error creating universal data connection file (.udcx)?

Trying to follow along to create a Data Connection Library but run into the following error:

The specified location does not exist or could not be opened. Choose a data connection library on a server running Microsoft SharePoint Server and specify a valid filename.

I was able to create the SharePoint Data Connection Library. Then I move to the To create a new data connection file in InfoPath section. I get to step 7 and encounter the error before I can finish.

I have my dataconnectionlibrary Data Connection that I just created highlighted.

enter image description here

I click Convert to Connection File button. Then as instructed, I put the address of the SharePoint Data Connection Library in followed by a chosen filename then the .udcx extension.

enter image description here

I hit OK, and at first, it looks like it’s going to work, like everything’s normal:

enter image description here.


enter image description here.

This happens no matter which Connection link type I choose (Relative to the site collection OR Centrally managed connection library). This happens no matter where I specify to put the file; I can Browse to my own Documents folder and it still gives me this error.

Looking for any kind of help on this one. Trying to create the Data Connection Library due to 5566 error trying to auto populate user info with GetUserProfileByName using SOAP in InfoPath form. Is there a workaround, a different way to create the .udcx file? This is so frustrating, running into error after error just trying to auto-populate a Person Picker control.

Bluetooth connection – Ubuntu 19.04

Good night !

Today I install Ubuntu 19.04. Until now, I’m liking of the system. I have problems of audition, and I use hearing aids. Recently I buy an appliance called Smart connect. This appliance serves to do connect with cellphone and notebook. He is an intermediary of connection. And I saw that Ubuntu 16.04 and 19.04 don’t do connection with this appliance.

So, as Canonical is always improving the system, I want to report a problem so you can work on improving it. Because, other users can be have some problem like my. The system is easy to use. So, I think it’s something for you to think too.

I don’t have sure if this is the correct place for this question.

My regards !

no connection with Broadcom BCM4311 802.11b/g WLAN wireless card

Since I installed Lubuntu 18.04.3 recently (on a Lenovo 3000 N-100 notebook) I have no wireless connection. I’ve read several previous AskUbuntu questions. Regarding the first answer to the AskUbuntu question at, I believe I followed the section titled Installing The Package (Online). There is still no wireless connection. Here is a current screenshot of the system tool Software and Updates. enter image description here

If you can help with suggestions, please make them clear and complete, step-by-step, without unnecessary assumptions/jargon/etc as I’m relatively new to Linux, and my awareness of system architecture and software is quite limited. Thank you.