similar to: Network filters with clean-traffic not working on Debian Stretch

Dear Yalang, that did the trick. If I look in the NAT table of the bridge I can see the generated rules. Probably wouldn't have though about that ever. Thanks a lot! Best Sam On 29.12.18 06:51, Yalan Zhang wrote: > Hi Sam, > > You can find the rules by below command, and it looks as below: > # ebtables -t nat --list > Bridge table: nat > > Bridge chain: PREROUTING,

Hi Sam, You can find the rules by below command, and it looks as below: # ebtables -t nat --list Bridge table: nat Bridge chain: PREROUTING, entries: 2, policy: ACCEPT -j PREROUTING_direct -i vnet0 -j libvirt-I-vnet0 Bridge chain: OUTPUT, entries: 1, policy: ACCEPT -j OUTPUT_direct Bridge chain: POSTROUTING, entries: 2, policy: ACCEPT -j POSTROUTING_direct -o vnet0 -j libvirt-O-vnet0 Bridge

Hi, I'm trying to configure nwfilter for KVM, but so far I haven't managed to figure out a working configuration. Network setup: The dom0 (Debian 7.1, kernel 3.2.46-1, libvirt 0.9.12) is connected via eth0, part of the external subnet 192.168.17.0/24, and has an additional subnet 192.168.128.160/28 routed to its main address 192.168.17.125. The host's subnet is configured as bridge

I just wrote this to assist some Red Hat folks understanding what libvirt does with iptables, and thought it is useful info for the whole libvirt community. When I have time I'll adjust this content so that it can fit into the website in relevant pages/places. Firewall / network filtering in libvirt ======================================= There are three pieces of libvirt

On 05/27/2014 02:46 AM, Brian Rak wrote: > Make sure you have: > > /proc/sys/net/bridge/bridge-nf-call-iptables = 1 That doesn't make sense. bridge-nf-call-iptables controls whether or not traffic going across a Linux host bridge device will be sent through iptables, but the rules created by nwfilter are applied to the "vnetX" tap devices that connect the guest to the

Hi, Can anyone please help with the following: I have a running instance with interface <interface type='bridge'> <mac address='fa:16:3e:ba:a4:67'/> <source bridge='br100/> <target dev='vnet0'/> <model type='virtio'/> <filterref filter='nova-instance-instance-00000001-fa163ebaa467'/>

Hi guys, I saw this sub-element in http://libvirt.org/firewall.html, there is some confusion, what's the meaning of sub-element <ip address='X.X.X.X'> in <interface type='bridge'> of domain xml? The detail <interface> in domain xml as below: <interface type='bridge'> <mac address='52:54:00:56:44:32'/> <source

Hi I am using Libvirt 1.1.2 with Openstack Havana (RC2, nova-network) and openvswitch 1.4.2+git20120612-9.1. Libvirt vif driver ( nova.virt.libvirt.vif.LibvirtGenericVIFDriver) generates config likes this: <interface type='bridge'> <mac address='fa:16:3e:44:30:a4'/> <source bridge='br0'/> <model type='virtio'/>

Hello, I would like to make filter that allows communication only between specified VMs. Those VMs should be specified by their MAC address. The filter should extend clean-traffic but I was not able to get it working with that reference. I have came up with modified clean-traffic which works fine [1]. Is there a way to achieve the same behavior with reference to clean-traffic? Thank you. Best

On Fri, Jun 29, 2018 at 3:40 AM Thiago Oliveira <cpv.thiago@gmail.com> wrote: > Hi Ales, > > I would like to prevent the guests from different subnets start a > communication. In other words I have the subnet 192.168.1.0/24 and > 192.168.2.0/24 and the guests from 192.168.1.0/24 cannot reach/talk with > guests on 192.168.2.0/24 at the same host. Is this possible using a

I'm trying to accomplish what I had hoped would be a fairly simple filtering of traffic to my VMs, but I'm hitting a snag. The VMs are allowing traffic when I wouldn't expect them to. Host and Guest are both running the same platform: Ubuntu 12.04.4 LTS 0.9.8-2ubuntu17.19 I have a basic bridge enabled on the host: brctl addbr brdg brctl addif brdg eth1 ip link set brdg up The host

Hi list, I'm studying nftables. I'm using CentOS 8.1 (Gnome) and I disabled firewalld. I noticed that a default policy is created with tables and chains probably for firewalld. So I created a .nft script where I stored my rules with a flush for previous ruleset, then saved on /etc/sysconfig/nftables.conf and the enabled nftables service. Running the script with nft -f script.nft all

How does the libvirt deal with the vnet mac address? Greetings, if I establish a network for the VM (hypervisor is KVM) using bridge in the virt-manager , a vnet0 device is created . There are some relationships about mac address between the vnet0 device in the hypervisor and the ethX device in the VM, for example : the mac address of vnet0 is FE:54:00:84:E3:62 the mac address of ethX in the VM

I had the same problem. If you are not using virtual machines then # systemctl disable libvirtd works and is easily reversible. Alan On 18/04/2020 23:03, Alessandro Baggi wrote: > Il 17/04/20 11:01, Alessandro Baggi ha scritto: >> Hi list, >> >> I'm studying nftables. I'm using CentOS 8.1 (Gnome) and I disabled >> firewalld. I noticed that a default

Hello, I am experiencing system hangs when running NFSv4 over a tinc VPN. I don't know if the problem is with NFS or tinc and would appreciate any suggestions on how to narrow down the culprit. Unfortunately I cannot simply run NFS directly over TCP -- the participating systems are connected only over an open network. The configuration is as follows: I have a master server

On 04/27/2015 04:59 AM, Daniel P. Berrange wrote: > On Sun, Apr 26, 2015 at 10:51:34AM +0800, wh.h@foxmail.com wrote: >> How does the libvirt deal with the vnet mac address? >> >> Greetings, >> if I establish a network for the VM (hypervisor is KVM) using bridge in >> the virt-manager , a vnet0 device is created . There are some relationships >> about mac

Hi all. What right way to protect ip/mac spoofing for guests withnount dhcp and other 1 ip per guest?

Hello, I have a nwfilter that I'm using to ensure that libvirt domains can't spoof IPv6 traffic. It looks like this: <filter name='no-ipv6-spoofing' chain='ipv6-ip' priority='-710'> <rule action='return' direction='out' priority='500'> <ipv6 srcipaddr='$IPV6' srcipmask='$IPV6MASK'/> </rule>

Hi there. I have configured kvm domain (rhel6.4) with ethernet bridged over macvtap, and found no filtration applied except mac. 'virsh' just silently ignoring attributes 'filterref' and 'ip address' in different formats. No error on validate stage. Config examples: ... <interface type='direct'> <mac address='52:54:00:31:ae:1a'/>

My firewall is using shorewall 3.0.x and CentOS Recently, I found that firewall is attaching from ARP spoofing.. There are a lot of "out of socket memory" in messages log ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and