similar to: Accepting RELATED, ESTABLISHED (TCP) connections into VM using Network Filters

Hi, I contact you as i have difficulties to use nwfilter with KVM host. I want to implemente flow filtering between my Linux guests. I created the following filter : cat admin-dmz-internet.xml <filter name='admin-dmz-internet'> <!-- this zone is an SSH ingoing only zone --> <!-- but SSH can go to an other SSH proxy --> <filterref

Hello, I'm having problem setting up filtering traffic for a virtual machine managed by libvirt. Strange thing is, such a setup has been working fine for me on an older version of distro (namely, opensuse 11.3 w/updates, kernel 2.6.34, libvirt 0.8.8) but refused to work on shiny new opensuse 12.4 (kernel 3.7.10, libvirt 1.0.2). The definition of filter in question is pretty simple:

Hi all, I've got a problem with nwfilters/iptables. For one of my guest's interfaces, I have established the following filter: --8<---------------cut here---------------start------------->8--- <filter name='p-mgmt' chain='root'> <uuid>94fdd15b-b380-ba8c-6685-91206829adc7</uuid> <filterref filter='clean-traffic'/> <rule

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

On 02/14/2014 08:40 PM, h0rst wrote: > 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

Hi All, I am new to libvirt and encounter a strange problem to set up network filter in a NAT network. I launched VMs in a single host using NAT, i.e. interface type='network'. Now I want to control the outbound traffic from VM instance - only allow the VM to asses a set of ip addresses. My network filter xml is as follows. The problem is once I change the VM xml, shutdown and start VM,

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

Hi All, I am new to libvirt and encounter a strange problem to set up network filter in a NAT network. I launched VMs in a single host using NAT, i.e. interface type='network'. Now I want to control the outbound traffic from VM instance - only allow the VM to asses a set of ip addresses. My network filter xml is as follows. The problem is once I change the VM xml, shutdown and start VM,

On Fri, Feb 14, 2020 at 8:05 PM Andre Goree <agoree@staff.atlantic.net> wrote: > I wanted to know if it's possible to use OVN networking and virtio > simultaneously in the same VM? Or am I wasting my time trying to get it to > work? > > In oVirt 4.x I was able to do it and also to intermix normal vnic and OVN based vnic. I needed to reproduced a problem I had in a

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

Il giorno lun, 02/09/2019 alle 08.26 +0100, Rowland penny via samba ha scritto: > > set 01 22:36:56 s-addc.studiomosca.net named[639]: samba_dlz: > > cancelling transaction on zone studiomosca.net > > That is showing that a client isn't being allowed to update a record. Is it possible to cure it in some way? > > [2] ----[smb.conf] > > > Please do not post

Hi, I am trying to prevent my qemu guest machines from sending IPv6 router advertisements over their network device. To that end, I have written this filter definition: <filter name='no-ipv6-router-advertisement' chain='root' priority='-690'> <rule action='drop' direction='out' priority='600'> <icmpv6 type='134'/>

On Wed, 24 Apr 2019 at 06:01, likun <kun.li at ucarinc.com> wrote: > Hi?guys. > > There is a wierd problem with iptables recently, hopes somebody can help > me. > > I have installed Centos 7.2.1511 on a bare metal Dell server these days, > disabled firewalld and enabled iptables.services, and setup a group of very > simple rules, as the following: > > I believe

Hi?guys. There is a wierd problem with iptables recently, hopes somebody can help me. I have installed Centos 7.2.1511 on a bare metal Dell server these days, disabled firewalld and enabled iptables.services, and setup a group of very simple rules, as the following: # iptables-save # Generated by iptables-save v1.4.21 on Tue Apr 23 09:15:14 2019 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT

Hello, Stephen, thank you for input. Yes, these servers have the same firewall rules, and both of them have the same problem from time to time, most of time they are good. Actually, these servers are newly installed to be used as the Glusterfs storage server, so not much data flowing at this time. >From the sysctl output, I suppose it can't be a conntrack table overflow :

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

Rowland, Did some editing in smb.conf that I had to reverse. Now I'm back to being able to connect with the firewall disabled. When I enable the firewall I get as far as windows network -> workgroup but no connection. I have only the rules you recommended in your last email. Louis, The information you requested is below: martin at radio:~$ dpkg -l|egrep "iptables|ufw" ii 

https://bugzilla.netfilter.org/show_bug.cgi?id=1423 Bug ID: 1423 Summary: iptables-translate silently discards --ctstate DNAT Product: nftables Version: unspecified Hardware: x86_64 OS: Debian GNU/Linux Status: NEW Severity: normal Priority: P5 Component: iptables over nftable

Rowland, OK. Should I delete these lines? diff yours mine 63d62 yours# -A ufw-after-logging-output -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] " 85,87d83 yours# -A ufw-before-logging-forward -m conntrack --ctstate NEW -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW AUDIT] " yours# -A ufw-before-logging-input -m conntrack

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'/>