1
vote
0answers
60 views

Change sender-IP for VM in libvirt behind NAT

I have a server with my own public /28 IPv4 Network. On this server I have some vServers, done with KVM/libvirt. These vServers are connected with a virtual network, NATed to the internet. Every ...
0
votes
0answers
82 views

KVM : domain names are resolved, but cannot ping

I've found that in KVM, my networking is acting funny. Oddly (1) I can resolve external internet locations using nslookup or ping , but I cannot actually receive a ping back. (2) I cannot ping ...
2
votes
1answer
908 views

libvirt and network filtering with nat - iptables overrides

At first, I want to say: I know, it was done initially wrong and I want to avoid doing everything again from the scratch because of general downtime. I am running libvirt/KVM on RHEL. I've got VM ...
0
votes
1answer
120 views

NAT one network to another using iptables

Trying to NAT ips in different network using iptables. KVM host with ip 10.10.11.36 on bridge br0. Two vms are running with ip 192.168.11.60 and 192.168.11.57 sharing bridge br0. Want to NAT all ...
1
vote
1answer
276 views

Connect KVM virtual network to internet

I have a CentOS server running KVM and need to connect a virtual network to the internet. The network must be routed or NATted, it must not be bridged (port security). If possible, I would like to ...
0
votes
1answer
3k views

KVM virtual machine unable to access internet

I have KVM set up to run a virtual machine (Windows Home Server 2011 acting as a build agent) on a dedicated server (CentOS 6.3). Recently, I ran updates on the host, and the virtual machine is now ...
4
votes
2answers
3k views

KVM Guest with NAT + Bridged networking

I currently have a few KVM Guests on a dedicated server with bridged networking (this works) and i can successfully ping the outside ips i assign via ifconfig (in the guest). However, due to the ...
1
vote
0answers
1k views

How to make sysctl network bridge settings persist after a reboot?

I am setting up a notebook for software demo purpose. The machine has 8GB RAM, a Core i7 Intel CPU, a 128GB SSD, and runs Ubuntu 12.04 LTS 64bit. The notebook is used as a KVM host and runs a few KVM ...
1
vote
0answers
306 views

Libvirt/KVM in NAT: can't access from host (and can't forward)

I'm trying to set up a port forward to a KVM guest, managed through Libvirt on Debian 6. The VM is running in NAT, through the "default" network. This all runs fine, the VM has full internet ...
5
votes
7answers
18k views

Yum update not working on CentOS 6.2 minimal install

Note: This is my first question on the stack exchange network so please give mercy and provide guidance where needed. I have installed a CentOS 6.2 KVM guest and I am having problem getting yum to ...
2
votes
0answers
291 views

How to configure opennebula for allowing a cluster private network to host images with public IPs

I am installing open nebula 3.4.1 for running virtual machines a (kvm based) cluster made of 5 computers: a front-end machine having 2 network interfaces and 4 slaves machines with a single network ...
1
vote
1answer
504 views

iptables and virtual machines of KVM, no ping, no ssh from VMs

Hi everyone :) I have two virtual machines KVM. I did two alias to eth0 - eth0:0 and eth0:1 and put them on an external IPs (eth0:0 - 89.114.122.3, eth0:1 - 89.114.122.4)​​. Now the problem is: ...
2
votes
1answer
846 views

kvm, can't access guest from outside host

following ubuntu guide on kvm, I've a test server up and running at this ip address 192.168.0.210 (netmask 255.255.255.0). The virtual machine (same as host ubuntu 11 server) use dhcp but has a ...
0
votes
1answer
460 views

RDP to Windows XP guest on kvm constantly reconnecting after logon

ISSUE I have, after some days of "hard" work, managed to correctly configure kvm on a Centos 5.5 host. I have 2 VM running successfully. Since I only have one public IP address (for the kvm host) I ...
10
votes
3answers
14k views

Forwarding ports to guests in libvirt / KVM

How can I forward ports on a server running libvirt/KVM to specified ports on VM's, when using NAT? For example, the host has a public IP of 1.2.3.4. I want to forward port 80 to 10.0.0.1 and port 22 ...