I have a VB.NET application that can connect to the SQL Server through LAN base, but how can I connect to it through internet, the application need to use outside, I know i need to use the public IP instead of using the IP address of the server but my public IP address that I've set in connection string can't connect to the server, Here's my connection string
Dim connstr$ = "Server=xxx.xx.xx.xxx\SQLEXPRESS,xxxx;Initial Catalog=sample_db;Integrated Security=True
Public conn As New SqlConnection(connstr)
I've try also to set the port and change the firewall restriction,enabled the TCP etc. and search a lot here but still doesn't work
Here's our network setup
PC-->router-->internet modem
1433 is the default sql server communication port. Port 1433 should be forwarded to the local IP address where your sql server runs.
1) Make sure that port 1433 is the valid communication port for sql server. You can check it from sql server configuration tools. Use actual port number rather than 1443 if it was changed by someone.
2) Find NAT (Network address translation) menu in your modem or router administration panel.
3) Forward port 1433 to your server's local IP address
4) Restart device
As a note that, your modem does not require a static IP. Your device most probably might have a new IP address after every restart. But it would be valid until you restart it once more. You can use this IP address in order to access your database remotely. It would be better but you don't have to get a static IP address.
UPDATE: You should also be sure that, port is not blocked by a program on the server such as a virus or security program.
Good luck
Google "port forwarding", which is also called Network address translation or "NAT".
The other answers are perfect but searching for the term on google should get you an idea on what it is, and how to go about it. Add your router name to the search for exact steps.
In short forward the port that SQL Server is listening on, from the router to the server machine. You will need to do some configuration on the router for that by opening the admin page. For how and details, Google "port forwarding"
Related
I have a regular MySQL server running with XAMPP at port 3306 and accessible by my internet ip aswell my local ip (127.0.0.1), the ports are forwarded in my router. An account set up to be accessed from any IP, Everything works fine.
I'm trying to make this same server be accessible by AirVPN DNS address. So I've followed AirVPN instructions to remove the forwarded ports in my router and forward a new port at their VPN with a random number (lets go with 1111) with local port as 3306 and DNS named as xxx.airdns.org
So I open MySQL with XAMPP under port 3306, nothing changed in config file. I run the AirVPN port checker over 1111 and it signals as open. I also try at other sites that checks ports and signals open at xxx.airdns.org:1111
Though when I try to make a connection as usual it returns error (10060): Can't connect to MySQL server on 'xxx.airdns.org' (10060)
Resolutions I've tried:
Switch port values in MySQL config files matching with the ports open in AirVPN
bound address to VPN adapter bind-address="10.6.114.48"
repeated the options above in all different kind of port combinations and addresses
Disabled Firewall on Ethernet adapter of VPN as described here
I couldn't achieve success in this task. I'm looking for some enlightment so I can understand the process.
EDIT:
The connection is set only to TCP protocol. A port check done through airVPN and is registered at XAMPP & FIREWALL logs as accepted connections. Though trying to connect from a client I got no log from Xampp or Firewall, it gets timed out.
Sorry for "answer" type not just comment, but i dont have enough reputation here :)
Maybe the protocol ( TCP/UDP ) is your issue.
If you use UDP on your airVPN better check forwarding on your router - most of them
by default sets TCP only. Otherwise maybe change to TCP on your airVPN.
ISP provider often filter this protocol.
Issue: Consider that you can't connect to a service running "behind" some VPN server from a machine that's connected to that very same VPN service.
Solution: Connect from another machine to test your service properly.
I've some mysql host in private network and would like to use a reverse proxy server (i.e. nginx) to connect with mysql-client to mysql host via reverse proxy server.
An example to better understand my answer:
suppose I've:
a mysql server with ip yyy.1
a mysql server with ip yyy.2
both in the network of a proxy server with ip XXX, and I associate to XXX the DNS mysql-server1.com and mysql-server2.com.
My goal is connect to mysql server yyy.1 when I use mysql client to connect to XXX by calling mysql-server1.com on port 3306, and similare when try mysql-server2.com on port 3306.
The problem with nginx is that I can't differenciate TCP request by server name, so in XXX server I should associate one port foreach mysql server, but this implies that every time I should change the port also in mysql client settings, and I don't wanna this!
There's some proxy-server that can accomplish that?
Could I use IP Table to route the request mysql-server1.com:3306 to localhost:[some port], where I could use [some port] in proxy setting to forward the requests to the server yyy.1?
This is impossible.
In the MySQL Client/Server protocol, the client never identifies the hostname to which it is attempting to connect to. Unlike in some other protocols, such as HTTP (with the Host header), the original name the client used to resolve an IP address from DNS is not preserved. TLS SNI is also not available, because TLS negotiation on a MySQL connection does not begin until the client reads the server capability flags to discover whether the server supports TLS, at which point the client asks to switch the connection to TLS... and this, of course, is after the connection is is already established.
In the MySQL Client/Server protocol, the server always talks first.
Your only options are for the proxy machine to listen on multiple IP addresses, with a DNS hostname pointing to each IP, and use the address to which the client connected to determine which server to use.
Or, each proxy instance listens on a separate port.
The protocol design prevents name-based virtual hosting.
I am using a software - (Ingress) by FingerTec which uses mysql database.
Some setups of this system are only using a single installation - consisting of a mysql server and a client locally on the same machine.
I have been having issues since I started to use the software when it is installed on a user's laptop/PC. The problem is that frequently when running the mysql server and client, a window pops up asking for the local IP address and port (127.0.0.1 and 3306 by default). To continue using the software, one needs to run IngressDB installer where you need to 'Update Connection' by giving the root user and pass for mysql and then 'Upgrade Database' to refresh the database for any new settings. After this step the software runs fine.
Yesterday I managed to simulate this issue by changing the static IP on my laptop while connected directly to one of their Access Controllers. I had to re-Run Ingress DBinstaller.
Now my question is this:
When using your machine(laptop/pc) it is normally getting IP add, def GW, Subnet etc from a dhcp server therefore there is no guarantee that you will always get the same IP leased unless there is a reservation to the machine's mac address.
As described earlier - when ever there is a change of IP address leased from DHCP, a window pops up showing the loopback address 127.0.0.1 and the mysql port 3306. So it never shows the local IP address (ex. 192.168.1.100). So I was thinking - why is the loopback IP not enough for mysql client/server as this stays the same forever.
Is is normal that software using mysql database server requires a static local IP on the machine hosting it? I am referring only to instances where both mysql server and client reside on the same machine.
I appreciate your thoughts about this and maybe any other way I can get around this apart from making an IP address reservation in the DHCP server. Setting a static IP address manually on the LAN adapter is no solution for me as this would limit the machine to connect only to a certain network and cannot be used at other places.
If the client is the same local machine as the server, the MYSQL server specifically does not need a static IP because it pretty much already has one: 'localhost' or '127.0.0.1'. If the client is not on the same machine as the server, the server would need a static IP.
If the machine is acting as a server for other content, yes, it would need a static IP. If you're doing this at home, chances are that your access point will let you configure it for a static IP.
I'm trying to host a WAMP server (WAMP version 3.0.6 on windows 10) and http:'//localhost, my internal IP and external IP (I forwarded port 80) are working. I Also registered a free .tk domain that's working on my network. But on other WiFi networks people can't connect to my server using my external IP or my domain.
I tested it on my smartphone (using mobile data to simulate the other WiFi network) and I got the error [My server's IP] took too long to respond.
How can I fix this?
In this case you have to make sure that the router is firstly directing to your server machine(local IPs generally have the form 192.168.x.x) and to the correct port ,so if WAMP's Apache is running on port 80 router must redirect to your machine's 80 port.
I've fixed it.
I double checked my port forwarding settings and changed the external IP from port 80. Then I saw a text: "When the External IP address is 0.0.0.0 you can access this port forwarding on internet, if you set a specific External IP address here the access is limited to only this IP address on internet", so I changed my external IP to 0.0.0.0 and now it's working!
I have apache, php, mysql, etc. setup on my 16.04 linux ubuntu server. I can access the webpage I have createdin /var/www/html/index.php using 10.0.0.8 now I want to use a domain name or even an IP address to access the server off of a local connection and on another internet connection. What do I have to do to do this I have no clue and I have no clue what to google to find out.
You should buy a domain name from a provider such as GoDaddy and assign it to your public IP address. Visit a public "What's my IP?" site to find your public IP address or look in your router settings to see what address was provided by your ISP. You'll probably have to enable port forwarding on your route for port 80 to 10.0.0.8.