Displaying 20 results from an estimated 5000 matches similar to: "So Close - Port forwarding in user mode."
2018 Aug 30
1
Re: Setting up port forwarding to guests on nat network
Thanks for the reply!
output:
net.ipv4.ip_forward = 1
What do you mean "The out:any and"
Anywhere else I can look as to why the connection isn't going?
Do I need some kind of listener at that port on the host? I'm not even
seeing the packet count on the prerouting chain increase when the
connection attempts are made.
On Thu, Aug 30, 2018 at 8:58 AM Martin Kletzander
2018 Aug 30
0
Re: Setting up port forwarding to guests on nat network
On Wed, Aug 29, 2018 at 06:31:41PM -0400, Rhys Ferris wrote:
>Hello all,
>
>I’m currently trying to figure out how to forward ports to guests that are on a NAT Network. I have followed the directions on https://wiki.libvirt.org/page/Networking under the “Forwarding Incoming Connections” Section and get connection refused when attempting to connect.
>
>System: Ubuntu Server 18.04.1
2018 Aug 29
2
Setting up port forwarding to guests on nat network
Hello all,
I’m currently trying to figure out how to forward ports to guests that are on a NAT Network. I have followed the directions on https://wiki.libvirt.org/page/Networking under the “Forwarding Incoming Connections” Section and get connection refused when attempting to connect.
System: Ubuntu Server 18.04.1
Virsh / LibVirtd Version: 4.0.0
Here’s the contents of /etc/libvirt/hooks/qemu
2016 Mar 21
3
hosted VMs, VLANs, and firewalld
I'm looking for some information regarding the interaction of KVM,
VLANs, firewalld, and the kernel's forwarding configuration. I would
appreciate input especially from anyone already running a similar
configuration in production. In short, I'm trying to figure out if
a current configuration is inadvertently opening up traffic across
network segments.
On earlier versions of CentOS
2016 Jan 23
5
RX dropped packets on guests subnets
Hello,
I have first a question (and then may be a problem), that I have difficulties to understand and eventually to investigate.
On each of my guests VM, I see constantly a RX dropped number increasing , Even if the VM does nothing !
ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.15 netmask 255.255.255.0 broadcast 192.168.100.255
2012 Sep 26
1
Inconsistent iptables forwarding rules for virtual networks?
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
2016 Sep 28
4
Virtualization Networking
Hello,
I'm a little confused on which networking option I need to choose when
setting up a VM.
I set up two VMs this past weekend both with NAT. Both able to were
access the internet.
The first one, I created in my / file system but didn't really have the
space so I deleted it.
The second one, I created in /home/kvm, but deleted it as well when I
couldn't access it FROM the
2012 Sep 13
1
How to disable dnsmasq from starting automatically with libvirtd
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
2017 Jun 20
0
Re: guest A from virbr0 can talk to guest B in virbr1 but not vice versa
On 06/20/2017 05:27 AM, Martin Kletzander wrote:
> 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
2012 Mar 22
0
[libvirt] Problem with Open vSwitch and dnsmasq
(Cc'ing to libvirt-users at redhat.com)
On 03/22/2012 02:43 PM, Ansis Atteka wrote:
>
>
> On Thu, Mar 22, 2012 at 11:11 AM, Daniele Milani <dano1988 at hotmail.it
> <mailto:dano1988 at hotmail.it>> wrote:
>
> I think I could try the first solution. Can you explain me how do
> I create the port used by dnsmasq?
>
> For example, is it correct
2012 Mar 23
1
[libvirt] Problem with Open vSwitch and dnsmasq
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.
2020 Apr 01
0
CentOS 7 host with guests as bridge cannot access host
Thanks for the info.
brctl show virbr0
bridge name bridge id STP enabled interfaces
virbr0 8000.525400fc34af yes virbr0-nic
brctl show virbr1
bridge name bridge id STP enabled interfaces
virbr1 8000.5254009c3902 yes virbr1-nic
ip a s virbr0
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu
2020 Apr 01
1
CentOS 7 host with guests as bridge cannot access host
Am 01.04.2020 um 21:56 schrieb Jerry Geis:
> Thanks for the info.
>
> brctl show virbr0
> bridge name bridge id STP enabled interfaces
> virbr0 8000.525400fc34af yes virbr0-nic
>
> brctl show virbr1
> bridge name bridge id STP enabled interfaces
> virbr1 8000.5254009c3902 yes
2020 Apr 01
0
CentOS 7 host with guests as bridge cannot access host
OK I rebooted.
I changed the NIC from Bridge to Passthrough, hit apply, then changed it to
bridge and hit apply, then booted the VM.
My firewall looks better but still not working.
iptables -L FORWARD -v -n | egrep '(policy|virbr1)'
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
0 0 ACCEPT all -- eth0 virbr1 0.0.0.0/0
192.168.100.0/24 ctstate RELATED,ESTABLISHED
2017 Jun 20
0
Re: guest A from virbr0 can talk to guest B in virbr1 but not vice versa
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 how two or more virtual
>networks in default NAT configuration are even allowed to
2010 Aug 20
0
Libvirt and iptables rule order
Hi,
On RHEL 5.5, I set up iptables rules for forwarding ports to some of my
virtual machines. For example.
iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 3380 -j DNAT
--to-destination 192.168.123.2:3389
iptables -I FORWARD -d 192.168.123.2 -i eth0 -p tcp -m tcp --dport 3389
-m state --state NEW -j ACCEPT
These worked fine, and I saved them with 'service iptables save'.
2012 Mar 23
0
[libvirt] Problem with Open vSwitch and dnsmasq
> Date: Thu, 22 Mar 2012 15:11:44 -0400
> From: laine at laine.org
> To: libvir-list at redhat.com
> Subject: Re: [libvirt] Problem with Open vSwitch and dnsmasq
>
> On 03/22/2012 09:10 AM, Daniele Milani wrote:
> > Dear all,
> > I have the following situation:
> > -I replaced the standard bridge driver with the Open VSwitch one;
>
> I'm curious what
2016 Jul 01
0
problem with dnsmasq and dhclient
Hello,
I have a problem which is that some of my VMs are loosing there IP addresses from time to time. What I saw in the log is when this VM loose its IP address there are DHCPREQUEST send from the VM by dhclient and the server responded only 50 minutes later !
Any help, advise on how to debug would be welcome.
Thanks in advance
Patrick
Here after is an extract from the log
July 1st 2016,
2016 Jul 01
0
problem with dnsmasq and dhclient
Hello,
I have a problem which is that some of my VMs are loosing there IP addresses from time to time. What I saw in the log is when this VM loose its IP address there are DHCPREQUEST send from the VM by dhclient and the server responded only 50 minutes later !
Any help, advise on how to debug would be welcome.
Thanks in advance
Patrick
Here after is an extract from the log
July 1st 2016,
2016 Jul 01
0
problem with dnsmasq and dhclient
Hello,
I have a problem which is that some of my VMs are loosing there IP addresses from time to time. What I saw in the log is when this VM loose its IP address there are DHCPREQUEST send from the VM by dhclient and the server responded only 50 minutes later !
Any help, advise on how to debug would be welcome.
Thanks in advance
Patrick
Here after is an extract from the log
July 1st 2016,