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Closed 9 years ago.
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How do VoIP services, such as Skype and Yahoo, connect to landlines?
We have a server connected to a landline using asterisk, so I'm thinking this server will bridge our VoIP conversation and connect it to a landline.
But if this is the case, wouldn't Skype need a lot of servers placed around the whole world just to connect to landlines?
Yep. That's how telephony works. It's unlikely that Skype runs a bunch of servers themselves - they probably license the right to use a commercial telephony service, probably through the backbone carriers (just speculating).
Yes, to call somebody using landlines with VoIP, you need a server somewhere that is connected to the landlines.
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Closed 1 year ago.
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I am trying to develop a server using nodejs that can be accessed through the internet without a public IP address. can somebody help me, please?
the things were simple. we just have to initiate a socket connection between local and remote servers. the local server should ask for a connection to the remote and the remote should keep the identifier of this local server. after keeping it, the two could now communicate easily through event.
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Closed 3 years ago.
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My client has an MS Access split database and will lose access to their in-house servers for 2 weeks to a month.
I'm thinking about building an Azure windows server and putting the back-end there, then having clients (about 12 of them) use RDP to sessions on that server (making sure that they each have the latest copy of the front-end in their own sessions).
I realize this is an "opinion" question - perhaps someone can point me to an appropriate forum - if not here.
You can do that. Any (virtual) machine running an Access database and allowing RDP access can be reached via Remote Desktop.
You may need a Terminal Server license for multiple simultaneous users.
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Closed 4 years ago.
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I would like to set up a VPN server, however it means ipv4 forwarding. Is it possible to set up a VPN without shutting down web services or should i use 2 separate servers ?
Thanks for reading ;)
Setting up a VPN server should not affect your web services. The only limitation is that you cannot use an HTTP(S) port (80 or 443), which I personally find practical (I have already seen Wi-Fi hotspots blocking all the ports except 80 and 443). However, if you get along with another port, you will do fine.
There is a good article about setting up an OpenVPN server on Debian Wiki (here). I have managed to set up the server using only this article.
Wishing you good luck.
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Closed 5 years ago.
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Is there any Linux command/Bash script for wireless clients to know the number of clients connected to each WiFi SSID ? How can I do this in bash ?
I am not sure what you want to achieve, so I will give you several answers to point in different directions.
To get all SSIDs (including all public information) you can use the following ...
$ su
# iwlist scan
I hope this is what you looking for.
If not, then you maybe want to know how many active connections one service is carring. This is by far more complicated. To check for active connections you will need a port sniffler like tcpdump and huge knowlegde.
A more common way would be to access the log files or the protocol of the server, but I think you had not asked if you have the rights to do so.
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Closed 6 years ago.
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I was looking at how windows provides tools like this called Remote Desktop Connection. Then I wondered, how would of this been accomplished. First most likely a socket connection is made between the two computers, but then how is a usable session opened. How could I do this in Java or Python?
My goal is to make one of these for connections over the internet protocol.
Research the protocol RDP which underpins the remote desktop connection support. Libraries exist to assist in using RDP in many different programming languages when you get to that point.