Hi all, Have configured XEN(handled by pacemaker) to host a windows7 guest, for networking I've configured bridge - auto lo iface lo inet loopback #For pacemaker and DRBD auto eth6 iface eth6 inet manual auto xenbr0 iface xenbr0 inet static bridge_ports eth6 address 10.0.0.2 broadcast 10.0.0.255 netmask 255.0.0.0 #For XEN guest auto eth4 iface eth4 inet manual auto xenbr1 iface xenbr1 inet static bridge_ports eth4 address 192.168.0.93 broadcast 192.168.0.255 netmask 255.255.255.0 gateway 192.168.0.1 dns-nameservers 8.8.8.8 bridge_maxwait 0 bridge_fd 0 the guest launches and works fine, but some applications require to connect to some ports and is not able to. I followed the steps mentioned in the link - http://wiki.xen.org/wiki/Network_Configuration_Examples_%28Xen_4.1%2B%29 Like - adding the following to /etc/sysctl.conf net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 then ran "sysctl -p /etc/sysctl.conf" as root and executed - iptables -I FORWARD -m physdev --physdev-is-bridged -j ACCEPT Still the application is not able to communicate with external applications like Matrikon for data reading Let know if there's any way to make the changes permanently and has full control to HVM guest over the network ports -- Regards, Kamal Kishore B V _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users