similar to: KVM networking issue

Hi Mike, Thanks for the info. I'd rather run monitoring such as tcpdump from the VM if possible and not the host as a simulation of a network appliance and with the intent eventually of giving others access to the VM and not the host. Here is the xml file for the private network: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to

Thanks, Mike. When running tcpdump on the VM I'm not seeing traffic unless it's explicitly intended for that particular VM, so no traffic between the other VMs is getting forwarded from the virtual interface to the "network appliance" VM. There is connectivity between the VMs on the private network and the "network appliance" VM which is acting as a gateway.

On Mon, Mar 21, 2016 at 1:33 PM, Kevin Ross <sedecim at gmail.com> wrote: > Hi folks, > > I posted this question to the KVM list, but I thought I'd try here > too--sorry if this is the wrong place to post this, can you please > direct me to the correct forum or list if so, thanks! > > I'm working on a network security project, using KVM installed on > CentOS

On Tue, Mar 22, 2016 at 1:57 PM, Kevin Ross <sedecim at gmail.com> wrote: > Hi Mike, > > Thanks for the info. I'd rather run monitoring such as tcpdump from > the VM if possible and not the host as a simulation of a network > Then run tcpdump on the VM. Same command or commands you'd have ran on the host node. > appliance and with the intent eventually of giving

On Wed, Feb 18, 2015 at 3:10 AM, C. L. Martinez <carlopmart at gmail.com> wrote: > On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske <s.kieske at mittwald.de> wrote: > > > > > > On 17/02/15 09:18, C. L. Martinez wrote: > >> Hi all, > >> > >> How can I stop/disable a nic in a virtual guest using a virsh > >> command?? I am searching

On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske <s.kieske at mittwald.de> wrote: > > > On 17/02/15 09:18, C. L. Martinez wrote: >> Hi all, >> >> How can I stop/disable a nic in a virtual guest using a virsh >> command?? I am searching the same effect like if I unplug network >> cable ... Is it possible?? I have tried with "detach-interface"

Hello! Since i could not find any information on the internet about this subject, i'm going to try my luck on this list. I'm trying to setup network-filter on a routed setup. I have a root-server at Hetzner, a german hosting provider. Along with my server i ordered a (/28) subnet to be able to setup dedicated IPs for my virtual machines (KVM). My Server is running Ubuntu 12.04 with

Currently, I have two networks configured via xml: virsh # net-dumpxml TestNetwork1 <network connections='2'> <name>TestNetwork1</name> <uuid>a76f665a-0196-4edb-81b4-340944a6869c</uuid> <forward dev='p1p1' mode='nat'> <nat> <port start='1024' end='65535'/> </nat> <interface

I have CentOS 7 host. Two guests on bridge network setup by GUI and virt-manager. 1 CentOS 8 guest 1 Win 10 guest Both cannot access the host. They can other machines on the network. Guests can access the internet just not the host. I used virt-manager GUi to set up everything. Selected the eth0:macvtap and Bridge. I "desire" bridge network. If I select something else I get access to

Hi. I have a machine with a local DHCP server and a couple of virtual networks and I've configured the server for each virtual interface, so that I would be able to install VMs on the corresponding subnets using PXE. The problem is that the two DHCP servers (my local server and dnsmasq) are conflicting with each other causing the boot process to either fails or takes ages untill a VM can

On Tue, Jun 20, 2017 at 10:05:19AM +0200, Martin Kletzander wrote: >On Tue, Jun 20, 2017 at 02:26:59AM -0400, Travis S. Johnson wrote: >>Hello, >> >>I came across an interesting problem in my home lab a few weeks ago as I'm >>prepping for my RHCE exam using Michael Jang study guide. I've been at this >>for days now, and I still can't wrap my head around

Hi all, I have 3 guests (2-RHEL4 and 1 RHEL6) and have some issues regarding networking between them. The 2 RHEL4 system's use default bridge virbr0 and get ip's of range 192.168.122.0/24 (192.168.122.207, 192.168.122.167) I created another bridge (virbr1) with NAT forwarding (no dhcp). The network i choose was 192.168.100.0/24. And the third system (RHEL6) was assigned static ip-addres

Hi everyone. Those are the iptables forwarding rules associated with the two virtual networks on my machine: ----------------------------------------------------------------------------------------- -A FORWARD -d 192.168.100.0/24 -o virbr1 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.100.0/24 -i virbr1 -j ACCEPT -A FORWARD -i virbr1 -o virbr1 -j ACCEPT -A FORWARD -o

Hello, I came across an interesting problem in my home lab a few weeks ago as I'm prepping for my RHCE exam using Michael Jang study guide. I've been at this for days now, and I still can't wrap my head around how two or more virtual networks in default NAT configuration are even allowed to communicate with each other despite what the libvirt documentation said. Here's the

Hi Folks, I have a snv_105 sxce host that I just can''t get to work as expected with crossbow + zones. My test host persephone, is a virtual machine running under VMware ESXi 3.5, with 2 virtual network cards (e1000), all on the same flat network/subnet. It started life just 2 days ago with a clean install of snv_95, and I LUed to 105 yesterday. To rule out any sharing issue, the first

Date: Thu, 22 Mar 2012 11:43:03 -0700 Subject: Re: [libvirt] Problem with Open vSwitch and dnsmasq From: aatteka at nicira.com To: dano1988 at hotmail.it CC: libvir-list at redhat.com; roberto.sassu at polito.it; paolo.smiraglia at polito.it; dev at openvswitch.org On Thu, Mar 22, 2012 at 11:11 AM, Daniele Milani <dano1988 at hotmail.it> wrote: I think I could try the first solution.

>Sorry, have to correct myself. Had to much to do today on OpenShift. >There is no Docker involved in what we discuss. The firewall rules for >the host bridge devices get created by libvirtd. Thanks I was using iptables and not converted to firewalld. I am doing so now. Will I need to delete the VM and re-add it ? I am rebooting first. Jerry

Hi! I'm aware that (host side) vnetX are created when VM boots. But I'm trying to figure out a way ti create a persistence in vnetX names. What I mean is, say, I want to associate VMs vm0 to vnet0, vm1 to vnet1, vm2 to vnet2 and so forth, no matter which order the VMs are booted. I looked around network XML format, but did't find something... Since I'm using Open vSwitch as

Hello I have a virtual server with 3 existing VMs running on it without issue. The host has 4 NICs installed; em1 for the host, em2 and em3 already in use by other VMs. I would like to dedicate em4 to my new VM however when I create the bridge like I did for the others I do not get a vnet3 device show up in the list as shown below. I tried using the GUI and virsh to create the bridge. I ended

Hi all, When I defined a network use the host bridge "virbr1" an error occurred : "libvir: error : Unable to create bridge virbr1: File exists" But how can I define this network use the host bridge "virbr1" ? <network> <name>def1</name> <bridge name='virbr1'/> <forward mode='nat'> <interface dev='eth0'/>