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Adam Williamson (adamw) has done a fine job at determining how to get bridged networking working with NetworkManager: https://www.happyassassin.net/2014/07/23/bridged-networking-for-libvirt-with-networkmanager-2014-fedora-21/ According to Adam, he did the work on Fedora 21 whereas I did it on Fedora 20. the undesirable features (problems) I found may be corrected on F21 but I believe that

I am having trouble with recovery. Today due to electrical work I powered down my networks Router / DHCP server. My Centos 7 host machines lost their DHCP lease (they are actually static leases). Once I power my Router / DHCP server back up none of my virtual machine were accessible. It appears that when the DHCP lease was lost on the virt server the bridge of the KVM guest were all losts. A

Joel Freeman wrote on 10/24/2018 9:06 PM: > On a similar note, Is there any reason to use Firewalld over IPTables? > > I'm incredibly new to Linux administration, and would like to your guys' > opinions on it. > > Many thanks, > Joel. My first impression was that firewalld and NetworkManager had a more desktop oriented/plug-n-play type feel compared to traditional

I've made 3 CentOS 7 installation attempts to configure a simple firewall/router box with 2 nics. I got myself into a circular scenario where NetworkManager and firewalld and /etc/sysconfig/network-scrpts/ifcfg-***** were interfering or overwriting each other. Needed to perform ifdown enp3s7 on the internal LAN nic in order to make the external internet enp2s0 reach websites and ping

Dear Members, Please tell me how can I fix this problem. Against allow imap on firewalld, I cannot access to the server. [root at speedex ~]# telnet 153.153.xxx.xxx 110 Trying 153.153.xxx.xxx... telnet: connect to address 153.153.xxx.xxx: No route to host After stopping forewalld I can access to the server. [root at speedex ~]# telnet 153.153.xxx.xxx 110 Trying 153.153.xxx.xxx... Connected to

On 03/20/2016 08:51 PM, Devin Reade wrote: > In a CentOS 7 test HA cluster I'm building I want both traditional > services running on the cluster and VMs running on both nodes On a purely subjective note: I think that's a bad design. One of the primary benefits of virtualization and other containers is isolating the applications you run from the base OS. Putting services other

Thanks Simon, Of course we are not sure but we have a strong feeling : - We tried the restore in loop (14) and all worked fine when firewall is disabled.- We tried the restore several times but no more 2? succeed restore at a row when firewall is enabled. We also tried : - - iptables avec nftables en backend - - firewalld avec nftables en backend - - nft avec nftables en backend

On Nov 17, 2019, at 11:58 AM, Nicolas Kovacs <info at microlinux.fr> wrote > * chrony: I'm using ntpd and ntpdate You should never be using ntpdate anymore (which is why the ntp project is deprecating it, http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate <http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate> ). I really only ever suggest ntpd unless you?re running an

Greetings, I'm attempting to get several virtual machines setup on a Fedora19 host system, with the traditional bridge network devices (br0, br1, etc). I've done this many times before with older versions of Fedora (16, 14, etc), and it just works. However, for reasons that I cannot figure out, the bridge doesn't seem to be working in Fedora19. While I can successfully connect to

Le 13/02/2020 ? 17:50, Stephen John Smoogen a ?crit?: > In the end, the problem is that NetworkManager, FirewallD, and other > 'automatic' helpers are 'part' of the OS.. and while it was easy to tear > them out in earlier versions.. as time goes on it is not. > > For a car analogy, it was much easier to convert any 1970 car from > automatic back to manual as many

Hi, I just setup a very basic HTTP proxy with Squid on a router running CentOS 7. Up until early 2020 I've been using a bone-headed shell script with iptables to configure my firewall. But I decided to follow advice from a few gurus on this list, and I've since moved my configurations to FirewallD, which works nicely. There's one configuration left to tackle, that's port

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

> -----Original Message----- > From: Gordon Messmer > Sent: Monday, August 31, 2015 12:15 PM > > On 08/31/2015 03:51 AM, Jason Pyeron wrote: > > I feel like this is an issue of libvirt starting before networking, > > but I am a fish out of water with systemd. > > Are you using the "network" or "NetworkManager" service to > configure your

Am 17.11.19 um 23:52 schrieb Nicolas Kovacs: > > Le 17/11/2019 ? 18:56, Jonathan Billings a ?crit?: >> You should never be using ntpdate anymore (which is why the ntp project is deprecating it, http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate <http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate> ). I really only ever suggest ntpd unless you?re running an NTP server

Matthew Miller wrote: >> I'n wondering if it is possible to have Centos-7 automatically change >> firewall zones, depending on the network we conect to. > The way to do this is changing the zone for the network in > NetworkManager. Are there two different ways of setting firewalld zones, in firewalld and in NetworkManager? Which is taken if they differ? > (This works

Hi, I have an fc14 install and would like to install a few kvm guests but am having difficulty with the networking. On the host I have disabled NetworkManager and configured a bridge which has eth0, the only physical interface on the server. I have a dhcp server on the local lan, and if I add a mac address entry to my dhcpd.conf, the guest will find an IP from there. I think somehow the guest

Hello, there is one route missing: 128.0.0.0/1. config client: route-nopull redirect-gateway def1 bypass-dhcp best regards Helmut Viele Gr??e Helmut Drodofsky Internet XS Service GmbH He?br?hlstra?e 15 70565 Stuttgart Gesch?ftsf?hrung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel. 0711 781941 0 Fax: 0711 781941 79 Mail: info at internet-xs.de

Le 17/11/2019 ? 18:56, Jonathan Billings a ?crit?: > You should never be using ntpdate anymore (which is why the ntp project is deprecating it, http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate <http://support.ntp.org/bin/view/Dev/DeprecatingNtpdate> ). I really only ever suggest ntpd unless you?re running an NTP server that provides NTP service to your network, and needs to

On Fri, Mar 25, 2016 at 11:26:17AM +0000, Timothy Murphy wrote: > >> I'n wondering if it is possible to have Centos-7 automatically change > >> firewall zones, depending on the network we conect to. > > The way to do this is changing the zone for the network in > > NetworkManager. > Are there two different ways of setting firewalld zones, > in firewalld and

----- Original Message ----- | Hi, | | I've created a bridge using 2 interfaces and have a lot of messages as | follows: | | nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own | address as source address | nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own | address as source address | | And the operating systems is extremely slow | |