Questions tagged [virtual-network]

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37 views

Why is my docker registry refusing connections from VMs in my local network but not the host?

For context - I am attempting to deploy OKD in an air-gapped environment, which requires mirroring an image registry. This private, secured registry is then pulled from by other machines in the ...
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1answer
67 views

Error message: No virtual network in this subscription - when Trying to add a peering

For some reason, I am not able to select any virtual network when Adding Peering. E.g., I am trying to add a peering between vnet0 and Vnet 1, but when trying to select virtual network. There is a ...
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20 views

Do I Need 2 NICs to build a gateway Linux server?

I am not creating a production network. Just one for learning concepts of routing, gateways etc. https://www.systutorials.com/setting-up-gateway-using-iptables-and-route-on-linux/ This article uses ...
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40 views

What is impact of Azure Firewall update from default to custom DNS on AKS and VM deployed in other VNets which route to Firewall?

I have 4 Azure Vnets, One Prod(VMs and AKS), 2nd Dev(VMs and AKS), 3rd(Domain Controllers), 4th Azure Firewall and Application gateway. External traffic is only come from 4th Vnet resources. Vnets ...
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52 views

DHCPOFFER not crossing virtual bridge on Linux?

I have a physical host machine running Ubuntu 20.4LTS (fully patched) attached to my network, which retrieves it's IP address via DHCP. This works. I have a VirtualBox VM on that host attached to a ...
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1answer
88 views

Azure: How to give an VM a NAT address and make the VM only accessible from specific IP address?

I am new Azure, and I just finished creating my first VM. Now I want to give the VM a private IP address (10.0.0.200), and make the VM only accessible from specific public IP addresses. I want the ...
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1answer
95 views

Azure Virtual Machine Firewall

I have multiple virtual networks, a VPN VN with site-to-site VPN, an AADDS VN, a production website cluster of virtual machines on a VN and a test website cluster of virtual machines on a VN. I also ...
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1answer
54 views

How to switch Vnet of a Azure VM?

As per our requirement, we have created two Vnets in Azure. The Vnets are connected to each other by virtual network gateway. They can communicate with each other. One Vnet is assigned to a VM. We ...
0
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1answer
34 views

In a Hub-Spoke configuration of VNets in Azure, do I need to create peer connections between spokes?

I'm setting up a simple hub-spoke configuration of VNets in Azure. Hub contains a VPN gateway then creating spokes for storage, compute etc. My main concern is latency so I'd rather not setup custom ...
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130 views

QEMU-KVM VM cannot access Internet through OVH dedicated server

I'm having trouble to connect my VM to the Internet through the host. I have an OVH dedicated server (RISE-1) that I installed Debian 10 on. Inside, I've used qemu-kvm to create a VM with Debian 10 on ...
1
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1answer
160 views

Expose Container in virtual network to public Azure

I have an Azure cosmos DB instance configured to allow access from a private virtual network: icy-horizon. I also have an API deployed using Azure Container Instances with port 80 exposed attached to ...
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2answers
370 views

Azure SQL Server - Firewalls and virtual networks - Azure ignoring my virtual network connection

I'm trying to connect to an Azure SQL server instance via a virtual network. I have it set up and it's connecting fine. Then I added the vnet to the Firewalls and virtual networks. Endpoint status is '...
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0answers
191 views

Difference between VMWare Bridged network and Docker ipvlan/macvlan?

In Virtual Networking, I have seen two techniques to connect the guest machine with the Host machines network. In VMWare/VirtualBox - Bridged Networking is used to connect the guest machine with the ...
1
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1answer
112 views

Does the linux bridge have in-built DHCP and DNS server? [closed]

Does the linux bridge have a dhcp server built in to the bridge software? And does the linux bridge support working as DNS-Server or it can only point towards the DNS server on the host or none. If ...
2
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1answer
259 views

Bridging two (a physical ethernet with a virtual ethernet) different subnets on linux?

I am thinking if it's possible to create a bridge while allowing each bridged network to exist in it's own subnet. Network 1 - Say, I have a physical ethernet based network eth01 - with subnet 192....
1
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1answer
408 views

How to connect 2 Virtual Network with on-premises without another VPN?

I'm totally new to Azure (and new to any public cloud, never did anything there). There is one productive virtual network with VPN connection to on-premises resources. Goal is to create new resource ...
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1answer
127 views

Ubuntu Server - “Virtual” Network Interface with Internet Access

I have an Ubuntu 18.04 server with one public network interface (eth0). I'm trying to create additional "virtual" network interfaces that will also be able to access the internet with NAT rules set up....
1
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1answer
716 views

How to route all VM traffic through specific physical interface over a Linux bridge?

My objective is to have all KVM guest VMs send and receive traffic on em2 with addresses on the 192.168.2.0/24 subnet. I have a host Linux machine (CentOS 7) with several NICs, 2 of which are in use ...
0
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1answer
626 views

Virtual network between Hyper-V host and guest VM is blocked by firewall because marked as unidentified

I have the following setup: Windows machine with Hyper-V activated Hyper-V VM under CentOS 7 using the default virtual switch as an interface between host and guest The virtual switch has 172.24.255....
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0answers
59 views

Unable to access SQL Server on the Host Machine from SQL Server Management Studio in the Guest VM

Using VMware Workstation 15, should I be using host-only for my scenario below? I need to access SQL Server, hosted on a Windows 10 host, from a Windows 10 Guest VM, without giving the Guest VM ...
0
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1answer
248 views

Creating RabbitMQ cluster (by Bitnami) and Kafka cluster (by Bitnami) in Azure and connecting to them from Kubernetes in another v-net

I'm trying to create an architecture with: 1. Kafka cluster (by Bitnami) 2. Rabbitmq cluster (by Bitnami) 3. Kubernetes cluster (AKS) that can use both Kafka and RMQ When I created both clusters (...
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2answers
4k views

Virtual Networking in KVM breaking internet access

I have set up a virtual networking on my CentOS 7 Workstation and the primary physical network interface is bridged as per this RHEL article. libvirtd is running successfully, however after reboot ...
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1answer
99 views

How to reliably keep a list of servers in a company network

We want to set up a connection to several servers at a customer site and are requested to deal with potentially changing IP addresses as they don't want to keep track of the MAC addresses used, with ...
0
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1answer
20 views

Azure Virtual Network Slow downloads from google servers

Whenever i download an image from a google server it is way slower than other images (can take up to 4 seconds) time curl -s https://pay.google.com/about/static/images/social/og_image.jpg -o image....
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0answers
419 views

Unable to resolve DNS over site-2-site VPN between Azure and on-prem

I am running into some issues with setting up a test lab environment between on-prem and Azure. I have got as far as being able to get the site-2-site VPN up and connected and passing traffic (...
0
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1answer
379 views

Implementing Segment Routing Traffic Engineering (SR-TE) in IOS XR 6.3.1

I'm trying to deploy SR-TE on XRv9000 routers IOS XR 6.3.1 version which are deployed in AWS according to the topology below. I have accomplished the configuration of SR on all routers which is ...
1
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1answer
47 views

Should a private virtual LAN be filtered

I'm a dev trying to learn others things and my current objective is to create a "virtual" lan on an ESXi host. I've created a VM which work as the LAN gateway to the WAN and some VM that are ...
2
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1answer
1k views

Restrict traffic between peered VNETs in Azure

I'm working with Azure, and I have 2 VNETs, each in its own resource group Peering + | ...
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0answers
162 views

What factor impact network speed between VM significantly?

There is question about network between different server,but i got a different situation. I have two VM in a server,and I tried to test maximum network speed between two VM. OS : CentOS VSwitch ...
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0answers
123 views

Solaris 10 LDOM Network Change

I have inherited a Solaris 10 host. At one time, it had 18 guests/LDOMs, but we're now down to 1, which is still business-critical. The host server has changed data centers and come up with a new IP ...
0
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1answer
879 views

GCP: No Network Access on additional virtual network interfaces

I have a Windows Server 2016 instance running on Google Cloud Console. I added a few extra virtual NICs to try to improve my network speed. Particularly hoping to use overseas endpoints to wormhole ...
4
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2answers
2k views

VNET peering with on-premise gateway transit not working properly

We have a VNET (let's call it VN_MAIN) that is configured to have a S2S VPN connection to our on-premise network. The VMs deployed within subnets of VN_MAIN are reachable from on-premise. What I'm ...
2
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1answer
3k views

NIC teaming on hyper-v host or within each VM?

I installed Windows Server 2016 Datacenter on a Dell T620, and then I installed the Hyper-V Role. Next, I created a NIC Team comprised of 2 physical 1Gbps network adapters. Team is called LANTeam. ...
0
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1answer
938 views

Firewalld virtual bridge outgoing traffic to vpn tunnel

I finally decided to sit down and do something that has long been on my todo list: to get my virtual networking actually to work. Simply put: I have a pure virtual bridge device (created by ifcfg-...
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774 views

How to access services running in KVM-guest (virtual network) from remote

Background: I am running an Openshift installation inside a KVM-VM and I can access the VM from the KVM-Host. I need to access Openshift from another machine. KVM is setup via virtual network using ...
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2answers
3k views

How to enable reverse DNS for private ips inside an Azure (ARM) virtual network

Let's take a pretty straighforward setup, all in a dedicated resource group: 1 vnet (say 10.0.0.0/16) 1 subnet (say 10.0.0.0/24) 2 Linux virtual machines, machine1 and machine2 (with a public ip) ...
0
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1answer
905 views

Docker: Virtual machine as worker with its host as manager in swarm

I'm having troubles to find which advertise address the manager should use to work with the following setup: The problem is that if I use the default options of docker swarm init on the host, I can't ...
1
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1answer
1k views

How to forward ports for azure virtual network gateway?

I have created Point to site vpn using azure virtual network. Right now I have 2 vms in vnet (with subnet ip's 10.x.x.x) 1 local machine connected to vnet with point to site vpn (ip 172.x.x.x) I can ...
5
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1answer
840 views

Detect if a network card is a virtual network card (docker/veth/etc) in Linux / bsd

I see some good explanation for fetching information about network cards and their statistics in ubuntu on this page. This gave a nice output as mentioned on the page. I tried reading other ...
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0answers
533 views

When multiple VMs share a storage device on the same host, where does the data actually travel?

I am trying to figure out the optimal way to share storage with multiple VMs on the same box. I am aware of a range of options: NFS, iSCSI, fibrechannel, bridged, etc, but I am unclear how they fit ...
4
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2answers
755 views

Use Azure Public IP With On Prem VM

We have an on prem RRAS server that connects to an Azure Virtual Network that allows us to have an On Prem/Azure hybrid. My query is, if i was to provision a public IP address in azure, what would be ...
2
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1answer
547 views

Virtual routers to replace proxy server

Most of the questions related to mine are about virtual routers managing virtual machines. I would like to use a virtual router, either DD-WRT or OPNsense inside VMWare to manage my office's network ...
0
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1answer
3k views

Allow transparent port forwarding in Azure subnet

I have a VM in an Azure VNet that needs to know the original public IP address of incoming connections that are port forwarded by a firewall appliance. So far I can only successfully port forward ...
1
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2answers
888 views

Azure virtual network site-to-site vpn unable to access public ip

I've setup a virtual network in Azure with a site-to-site VPN tunnel. So far so good, but the tunneled devices cannot access my servies via the public IP, they can only access via the local IP. Seems ...
1
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1answer
146 views

How to use virtual DNS to lookup for VMs?

I have multiple qemu VMs dinamically rebooted. Each of them with DHCP in a NAT virtual network and a unique hostname. From any VM I can see that resolv.conf is using 192.168.122.1 as nameserver. I ...
6
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1answer
393 views

How can I increase the throughput/bandwith of my virtual network?

I have some virtual machines servers with some micro-services and do some load tests with JMeter. All the servers including the JMeter machine are sharing the same virtual network. The virtual network ...
1
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1answer
107 views

How to assign an IPv4 address to a second network interface of an LXC container?

I am running an lxc container which I want to connect to two different bridges (br0 and br1). When I configure the container's config file (/var/lib/lxc/testcontainer/config) as shown below, only the ...
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0answers
146 views

How to Setup Azure Site to Site Connection when On Premises VPN needs Specific Address Space?

I've attempted to create an Azure virtual network using the Classic implementation. This is because I needed the virtual network gateway to handle both site to site and point to site connections. A ...
1
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1answer
243 views

libvirt TCP tunneled network only works for 2 VMs

I'm setting up some VMs with libvirt (qemu driver). One VM is meant to be the gateway and is thus configured with two network interfaces. One interface is bridging into my real LAN and the other uses ...
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0answers
399 views

Restricting SQL Server Management Studio using LogMeIn Hamachi

I have a SQL Server 2016 instance on Windows Service 2012 VM running in Azure. Currently the network security group/firewall allows for port 1433/TCP traffic so I can connect from my PC using SQL ...