I have a remote server to which I need to connect to. Let's say the hostname is Remote01. From my local, I am connecting to it via a VPN (Juniper). I have another remote server in my intranet which is an RHEL server. I loginto this RHEL server (let's call it Remote02) and in the command line I type:
ping Remote01
This returns
ping unknown host Remote01
Do I need a VPN installed in Remote02 as well?
You would need to install the VPN client on Remote02 as well in order to reach Remote01.
Or, if you're comfortable changing the routing table and firewall of your own server/machine, you can changing the routing table on Remote02. For the network of Remote01, instead of going to the default gateway, point it to your local machine. On your local machine, modify the firewall to accept incoming packets from Remote02 to forward to to Remote01 via the existing VPN connection.
I would say the first solution is much simpler. But if for some reason, the VPN client is not available on Linux then you can try the second solution.
Related
I have an application that connects to a domain using port 3306 (MySQL) and port 21 (FTP).
I've had to move the MySQL hosting to another server (AWS) and need to keep the FTP server as is.
Now the problem I have is that the application doesn't allow you to specify a different server name for each service so it's trying to connect via FTP to the MySQL server in AWS.
Is there any way to setup Windows to redirect certain ports only to a different IP?
Is there a way to set up the new server to bounce FTP requests back to the older server?
Alternatively is there a way to setup the domain DNS to point MySQL port requests to the MySQL server?
One of the ways to fix this is, install a TCP proxy server (Eg. nginx, haproxy) on the new server and pass the request to the old server based on the request type.
I have the following topology.
One Ubuntu 16.04. Instance on the Amazon AWS where my global MySQL Server is running. I want to use this Server as a Slave (Multi-Source Replication) for many local Master (Windows Machines MySQL Server).
For Testing Reasons I`ve Managed to make this running on one local Machine (with three different MySQL Server Running).
But now I want to make this Replication work on the mentioned global Server with the local ones. But it fails on the attempt to connect from the EC2 ubuntu Instance to the local Windows MySQL Server.
When I try to connect from my EC2 Instance to the local Computer with MySQL running on Port 3307 it keep saying:
ERROR 2003 (HY000): Can't connect to MySQL server on (113)
The strange Part is, that I can PING the Local Computer but not telnet it.
Telnet just says:
telnet: Unable to connect to remote host: No route to host
I can access the Global (EC2 / Ubuntu MySQL Server) from the local Machine but not the other way around.
I`ve already made a new Rule for this Port on the Windows Firewall Settings.
But the Port 3307 on the IPv4 Address seems to be still Closed.
I have no clue what I am missing to get a Connection from the EC2 Instance to my local Computer via TCP.
Do I have to open the Port Specific on the Router?
I hope for your help.
Best Regards.
It seems like your local computer is not visible, as your incoming ports to your local pc are closed. It may be a problem with your router, or your internet service provider, which is not allowing you to open ports(the most common one).
The possible solutions are:
1.) If your ports are not open due to the router
Try forwarding required ports to your pc.
Try Switching off your NAT firewall that may be blocking ports.
Try switching off your windows or antivirus firewall if any.
2.) If your ports are blocked by your Internet service provider.
Try getting help from ISP
Switch to a static IP connection if on dynamic.
Use a VPN service that provides an unblocked port service to all IPs.(This one solved my problem when I was struck in this situation.)
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.
Is it possible to do the following?:
I have a local Mac running OS X Lion with a MySQL Server installed which runs different processes regularly and stores data into a local DB.
On the other hand I have an Amazon EC2 instance.
What I would like to do is to use the Amazon instance to perform certain cronjobs (using its own resources) but connecting to the data that is on my localhost (my computer) and performing basic SQL actions like updating the data, inserting, etc.
I don't know if this helps, but I have a static IP. Is there any way I can "open" my IP so the Amazon instance can recognize my home computer as a valid MySQL server?
Thanks for your help, any tip in the right direction will be much appreciated.
If your EC2 instance is connecting to your local db you'll need a static IP locally. Well not need... but if you don't have it anytime you reset your router or loose power etc your ip will change. You can look into Dynamic DNS as well for your local instance.
Your ISP will not block your port on your local instance. This would be a firewall inside your network that is preventing you from connecting to mysql or a configuration with mysql itself. Users can only connect to mysql from certain IP addresses.
You would have to open up the mysql port on your firewall if you are using one, have the mysql client installed on your EC2 instance, and make sure that the user that had proper grantable permissions.
That said why not run cron locally on the mac?
If you can login to your server via SSH then there's no need to open any other port and no static IP is required. You can use SSH port forwarding instead. From your local machine run:
ssh -C -R 5555:127.0.0.1:3306 <your-server-host>
Now you should be able to connect to your Mac's database running on localhost:3306 from the remote server at localhost:5555.
Hi I am completely new to phpMyAdmin and mySQL
Is there any way to configure remote management/access of my MySQL database by pointing requests or a browser to an IP? I have my server set up behind a router and have setup port forwarding for ports 8080 (tomcat) and 3306(should be default mySQL). Everything works locally on the machine, however I cannot access the dbs or phpmyadmin by pointing a browser from a computer on the local network to http://IP/phpmyadmin or from externally by pointing the browser to the IP given to me by my ISP. Any thoughts? Is there a specific way to edit the config files in order to allow the use of IP addresses?
Exposing your db and appserver on the internet is not a good idea. If these need to be accessed remotely, use a VPN or authenticated SSL. In the case of phpmyadmin - if this is running on a webserver on your network then you'll need to forward port 80 too - although I'd recommend using HTTPS/SSL (port 443)