search for: formatnwfilt

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

To take advantage of the filters, is it as simple as adding these couple of lines in a guest's xml file like the example from https://libvirt.org/formatnwfilter.html#nwfconcepts ? <devices> <interface type='bridge'> <mac address='00:16:3e:5d:c7:9e'/> <filterref filter='clean-traffic'> <parameter name='IP' value='10.0.0.1'/> </filterref> &l...

...s> .... <interface type='bridge'> <mac address='00:16:3e:5d:c7:9e'/> <filterref filter='clean-traffic'/> </interface> .... </devices> ... </domain> There is quite alot more info here: http://libvirt.org/formatnwfilter.html http://libvirt.org/firewall.html Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|

...to hardcode the host IP address in the nwfilter so that I can use that >> > filter for other networks. Is it possible to reference the host's IP >> > address in the filter? > >There is a pre-defined parameter for the VM's own IP address: > > http://libvirt.org/formatnwfilter.html#nwfelemsRulesAdvIPAddrDetection > >but we don't have anything for the host's IP address. We could fairly >easily add it though I reckon - eg provide a HOST_IP parameter. Thanks Daniel. >Regards, >Daniel

...o the get IP addr, if qemu guest agent is installed on the client, $ virsh domifaddr DOMAIN So that you can pass IP to the XML, and somehow you can trigger the update of NWFILTER with some magic, quite a hack. Or, you could just use client's MAC addr to define the filter: https://libvirt.org/formatnwfilter.html#nwfelemsRulesProtoMAC But I don't think there is direct way to specify a client's domain name in the NWFILTER XML definition as of now. P.S. I am new to libvirt, so everything above could be wrong. Dan _______________________________________________ > libvirt-users mailing lis...

On Thu, Mar 30, 2017 at 06:15:28PM +0100, Nux! wrote: > Use libvirt with mac/ip spoofing enabled. > > https://libvirt.org/formatnwfilter.html > > https://libvirt.org/firewall.html > > -- > Sent from the Delta quadrant using Borg technology! > Thanks Nux and Kristian but I don't see if these solutions will be really efective in my environment. Let me to explain. In this host I three physical interfaces: eth...

...; and <interface type='ethernet'> 2) only used by the xen driver, and ignored by all others. I believe it is the IP address that xen will tell the domain to use for its interface. The correct way to specify a guest IP address for a nwfilter is described here: http://libvirt.org/formatnwfilter.html#nwfconceptsvars The page you're citing is something lifted from an email written by Daniel Berrange, and it was likely written during early design of nwfilter and then wasn't updated to reflect what was finally implemented. Stefan - can you confirm or deny my suspicion? Beyond tha...

...;allow-arp'/> >> <filterref filter='allow-dhcp'/> >> <filterref filter='qemu-announce-self'/> >> <filterref filter='no-other-l2-traffic'/> >> </filter> Comparing the examples on this page: http://libvirt.org/formatnwfilter.html to the contents of the no-other-l2-traffic filter, I see that the manually constructed examples of "block all other traffic" on that page include an <all/> element in the filter. Possibly that was accidentally left out of the no-other-l2-traffic filter, so it isn't actua...

Hi all, What options exists under CentOS hosts to work with isolated networks?. For example, on BSD systems it is really trivial. In FreeBSD you can use setfib tools and on OpenBSD it is possible to use rdomain options. In 30 secs it is possible to work with isolated networks and assign process, ip address and routes (hidden from the main route table and ip addresses), etc. But I can't

I have some questions regarding the way that networking is handled via qemu/kvm+libvirt -- my apologies in advance if this is not the proper mailing list for such a question. I am trying to determine how exactly I can manipulate traffic from a _guest's_ NIC using iptables on the _host_. On the host, there is a bridged virtual NIC that corresponds to the guest's NIC. That interface

...9;/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> > </interface> With an empty filter, connectivity is working fine. Now, if I add the example ruleset suggested in the documentation ( http://libvirt.org/formatnwfilter.html#nwfwriteexample ), *incoming* ICMP works (but not outgoing), and inbound SSH traffic is blocked, together with outbound DNS. The linked rules produce the following iptables chains: > Chain INPUT (policy ACCEPT) > target prot opt source destination > libv...

Hi @all, I'm having trouble to realize my use case and hope somebody could help me. # Use case For a home lab I want to deploy several guest domains. These domains must not have a direct or NAT connection to the internet or my LAN. They should only be able to reach my LAN and the internet through a proxy. # What I've done I've created the following virtual switch in isolated

...a > Linux host bridge, then all the traffic to/from the guest will be > processed by iptables and ebtables on the host. libvirt has a > subsystem that can help you create filtering rules that will be > applied to the guest interfaces *on the host*: > > > https://libvirt.org/formatnwfilter.html > >> On the host, there is a bridged virtual NIC that corresponds to the >> guest's NIC. That interface does not have an IP setup on it on the >> host, however within the vm itself the IP is configured and everything >> works as expected. >> >&gt...

Hello All- I've looked in several places and haven't found an answer to this question: is it possible to have libvirt add custom rules to iptables for virtual network interfaces? I took a look at the "Firewall and Network Filtering in Libvirt" page and it seems overly complicated for what I want to do. Given an interface virbr2 and its network 192.168.4.0/24, libvirt installs

...uot; show any entries added by libvirt. Also omitting the "parameter name='IP'" part didn't change anything. There are no error messages in /var/log/syslog nor in /var/log/libvirt/qemu/<VM> My main references were: https://libvirt.org/firewall.html https://libvirt.org/formatnwfilter.html https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-virtual_networking-applying_network_filtering https://www.berrange.com/posts/2011/10/03/guest-mac-spoofing-denial-of-service-and-preventing-it-with-libvirt-an...

...- * route-br0 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable REJECT all -- route-br0 * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable When i try to setup a network-filter for a VM (a modified version of http://libvirt.org/formatnwfilter.html last example): <filter name='server-x' chain='root'> <filterref filter='clean-traffic'/> <rule action='accept' direction='in' priority='500'> <all state='ESTABLISHED'/> </rule> <rule action=...

...on't want > > to hardcode the host IP address in the nwfilter so that I can use that > > filter for other networks. Is it possible to reference the host's IP > > address in the filter? There is a pre-defined parameter for the VM's own IP address: http://libvirt.org/formatnwfilter.html#nwfelemsRulesAdvIPAddrDetection but we don't have anything for the host's IP address. We could fairly easily add it though I reckon - eg provide a HOST_IP parameter. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvir...

...the nwfilter so that I can use that > > > > filter for other networks. Is it possible to reference the host's IP > > > > address in the filter? > > > > There is a pre-defined parameter for the VM's own IP address: > > > > http://libvirt.org/formatnwfilter.html#nwfelemsRulesAdvIPAddrDetection > > > > but we don't have anything for the host's IP address. We could fairly > > easily add it though I reckon - eg provide a HOST_IP parameter. > > Thanks Daniel. BTW, please don't misinterpret this to mean i'm goin...

I want to block my VM with mac addr 52:54:00:a1:05:b6 from using IPs other than 192.168.124.130 is there any libvirt way to do this? -- Regards, Shashwat Shagun

...tly working on opt-out patches to disable that functionality if wished. I also don't use firewalld. It's both paternalizing and annoying and takes away user flexilibity in exchange for nothing. anyways Check the nwfilter page to write own filters for the beginning: https://libvirt.org/formatnwfilter.html#nwfwrite some more info: https://www.redhat.com/archives/libvir-list/2010-June/msg00762.html https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-virtual_networking-applying_network_filtering regards Am...