I Have Virtual server That My App is connected this and webService is on there
app can connect and get data and i can connect to that by vnc-Viewer or ...
but
server can not connect to internet or any website
please help me
There are two option for VM.
1. linux
2. window.
Linux :- check and find the ip has connected to ethernet port and also entry to /etc/resolv.conf.
nameserver 8.8.8.8
nameserver 8.8.4.4
then start the network service using command service network restart(centos-6) and also start sshd service for outside ping.
Window:- in window case you have to check that remote setting has enabled.
window property - > remote setting.
then ping the ip outside the network, it may be work
Related
I've installed a Windows 2012 R2 VM (free tier) and enabled all ports for external communication (including port 80).
I logged in to my VM and installed nginx webserver (I've also tried to python development server).
I can access the website internally on the VM (using 127.0.0.1 or the internal address of the server 10.1....) but when trying to access it from outside, using the external IP address (which is also the IP address I used in order to login to my server using RDP) I get no response.
Can you please help me understand what I'm doing wrong?
Thanks!
As #evilSnobu points out from his comments, the short answer is to allow the TCP port 80 in the windows firewall on windows VM itself.
Usually, we could login to that Windows VM and run the CMD command netsh advfirewall set allprofiles state off to disable the windows firewall temporarily. Then we can use telnet tool to check if TCP 80 port can be connected.
When we face the same issue no response outside of Azure VM. we can try one or more of the followings:
There is an NSG at the subnet level or NIC level as well which is not allowing data through.
There is a firewall on the VM itself (windows firewall etc.)
There is nothing listening on that port. It should be listening on 0.0.0.0 instead of 127.0.0.1 when you use netstat -ano in the windows CMD.
The service is not staring when you verify the port listening.
Outbound traffic with a specific port is denied from your local machines.
Hope this helps.
I've setup an Ubuntu Server on Azure. On this server, an application is running on port 3000. I want to access this application external. Azure tells me my server has public ip 40.68.XXX.XXX.
When I ping this IP, there is no response, despite ssh works when connecting to this IP-address.
I want to access 40.68.XXX.XXX:3000 external, does somebody know how to get this work?
Yes, you need to open up a port on the Network Security Group (NSG) and open up the port on your firewall (on the VM itself).
Easiest way to open the port is using the portal:
https://learn.microsoft.com/en-us/azure/virtual-machines/virtual-machines-windows-nsg-quickstart-portal
i was accessing a vm from a server ip . today i changed that vm ip to a different ip.but while restarting network it showed
Shutting down interface eth0: Write failed: Broken pipe
after that i am not able to access the old ip as well as the new ip i assigned.i think it shutted down the eth0 interface . so i am not able to access.so how to reset that vm network configuration now from server ip??? i am not able to ssh now to that vm from server as well .
note: i ahve a server ip.i am doing ssh to that ip first.then i was doing ssh to a vm ip. i was not able to access directly the vm from outside. so i was configuring that vm to a new ip for outbound access.
I am running a webserver (eg: tomcat7) in vmplayer guest, with NAT and I am able to view the webserver from guest using it's hostname:port but host browser is unable to connect to this webserver. Any idea? Is there any specific network configuration that needs to be done for host to connect to guest?
Note: I used ifconfig and got ip address from eth8, but ping request times out all the time.
VMWARE player network settings screenshot
Update
I also had to add entries in both machines hosts file for DNS
Change the network settings to use Bridged. That will connect to your router and get an IP off DHCP which your Host will be able to see. NAT is using your host address.
I am using Azure Virtual Machine (Windows Server 2008 R2 image) provided from the gallery and created Public port and private port using the portal. I did remote log in to VM and I run a TCP server application inside VM (TCP server binds to the private port of the VM). Problem I face is that I can not connect it through the public IP and port (from external machine). I have created a inbound rule in VM's Firewall, where I enable connection to the Private port of VM. I tried recreating the VM, also the new ports. Still problem persists. One more thing I observed is that my TCP Client is able to connect to RemoteDesktop port of the VM also the PowerShell port. But does not connect to the port that I created through the portal. Pls suggest what can be wrong?
Note: I also observed some weird behavior. I enabled all ports for my TCP Server app in Inbound rule of firewall and found that some unknown IP (was similar to azure internal IP) is connecting to my server. Why it is happening?
I would like to understand as to how you are trying to connect with the Virtual Machine, using RDP or trying to test the connectivity, for example, using Port Ping.
Endpoints for RDP and Powershell are configured by default. So if you are trying to connect using Remote Desktop, you can directly connect to the VM using MSTSC from Run and provide the IP of the VM followed by the Port Number using the below format
xx.xx.xx.xx:3389
However if you would like to test the connectivity to the VM, I suggest you to use Port Ping instead of ICMP ping since ICMP traffic is blocked by the Azure load balancer and the ping requests timeout. While Ping.exe uses ICMP, other tools such as PsPing, Nmap, or Telnet allow you to test connectivity to a specific TCP port.
On the other hand, after creating the VM, you can add endpoints additionally as needed. You can also manage incoming traffic to the public port by configuring rules for the Network Access Control List (ACL) of the endpoint.
The private port is used internally by the virtual machine to listen for traffic on that endpoint.
The public port is used by the Azure load balancer to communicate with the virtual machine from
external resources. After you create an endpoint, you can use the network access control list
(ACL) to define rules that help isolate and control the incoming traffic on the public port. For
more information, see About Network Access Control Lists.