similar to: Disabling iptables on bridge breaks port forwarding for NAT

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'.

Hi, If I issue the commands # service libvirtd stop # service iptables stop # service iptables start # service libvirtd start the iptables rules that enable NAT on my virtual networks are not created when libvirtd is started, even though the networks are set to autostart and 'virsh net-list' shows them as active. The rules are only created if I run net-destroy and net-start. Is this

Hi, I have a puppet module that I''m using to manage Oracle 11G. I''m using puppet 0.24.8 on 64-bit CentOS 5.4. Everything works properly except the execution of the oracle installer. It fails because it believes that the user it is running as is not a member of the proper groups. However, the user is in the groups, and if I log in as that user and run the same command that puppet

In the Redhat EL6 virtualization guide ( http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/sect-Virtualization-Network_Configuration-Bridged_networking_with_libvirt.html ) I read this: # Configure iptables Configure iptables to allow all traffic to be forwarded across the bridge. # iptables -I FORWARD -m physdev --physdev-is-bridged -j ACCEPT # service iptables

http://bugzilla.netfilter.org/show_bug.cgi?id=751 Summary: IPv6 bridging bug Product: iptables Version: unspecified Platform: x86_64 OS/Version: Gentoo Status: NEW Severity: normal Priority: P3 Component: ip6tables AssignedTo: netfilter-buglog at lists.netfilter.org ReportedBy: david at

Hello all, Basically my problem is how can i access a virtual machine from local network. I am able to do so from the host PC put not from other PC's on the same network. here is my what i did so far (http://wiki.libvirt.org/page/Networking#NAT_forwarding_.28aka_.22virtual_networks.22.29) cat '/etc/libvirt/qemu/networks/default.xml' <network>

I built a CentOS 6 machine to host several CentOS 6 guest servers. As all guests will be Internet facing I set up the host with two bridged NICs and assigned an Internet facing IP address to br0 and a local IP address to br1. Each guest was installed using br0 and br1 with virtio drivers. On each I assigned an Internet facing IP address to eth0 and a local IP address on eth1. So far so good. I

Hello there, I''ve got a problem regarding my XEN network setup. First of all, I''ll just tell you what doesn''t work: the access to a forwarded (natted) port (e.g. port 80 http) of a dom (no matter if dom0 or domU) to the servers external ip address (from "inside") does not work (connection refused). Here''s the layout of my xen virtual network:

Hi! The Netfilter project proudly presents: iptables 1.6.0 This release includes accumulated fixes and enhancements for the following matches: * ah * connlabel * cgroup * devgroup * dst * icmp6 * ipcomp * ipv6header * quota * set * socket * string and targets: * CT * REJECT * SET * SNAT * SNPT,DNPT * SYNPROXY * TEE We also got rid of the very very old MIRROR and SAME targets and the

Hi Everyone, In order to prevent DomU from entering promiscuous mode, is it just a matter of adding these 2 rules when the vif is created? # Accept packets leaving the bridge going to the domU only if # the destination IP for that packet matches an authorized IPv4 # address for that domU. iptables -A FORWARD -m physdev --physdev-out vif1.0 \ --destination 216.146.46.43 -j ACCEPT

The network-bridge script fails when setting a few sysctls which are only available if ebtables is present in the host kernel. Fix by ignoring the return value of the sysctl command. Signed-off-by: Avi Kivity <avi@qumranet.com> Index: xen/tools/examples/network-bridge =================================================================== --- xen/tools/examples/network-bridge (revision 991)

Hi! The Netfilter project proudly presents: iptables 1.8.3 iptables is the userspace command line program used to configure the Linux 2.4.x and later packet filtering ruleset. It is targeted towards system administrators. See ChangeLog that comes attached to this email for more details. You can download it from: http://www.netfilter.org/projects/iptables/downloads.html

I had a major HD failure and need to rebuild my host server and the virtual servers that resided on it. I am moving from CentOS 5.6 to CentOS 6.3. I am using the same configuration, as best as I can tell, that was working only hours ago on 5.6 but does not work on 6.3. My guest server can see network traffic on the bridged network device but I cannot seem to interact with it. Iptables turned

Package: xen-utils-common Version: 3.0.3-0-2 Severity: normal I cannot find a use the network-nat and vif-nat provided in the general case, where I'd like to NAT between vifx.0 and ethx interfaces. I have setup the following in /etc/xen/xend-config.sxp : ## Use the following if network traffic is routed with NAT, as an alternative # to the settings for bridged networking given above.

Torsten, I suffered a similar problem and was wondering if you found a better solution to the problem of dnatting on a transparent bridge. My setup: INTERNET <-> ROUTER <-> (linux)BRIDGE <-> INTERNAL NETWORK Solution: setup a bridge with ip x.x.x.51 and alias another ip to the bridge x.x.x.50 ( using a /16 network at home ) Now get the router to send all incomming traffic

Hello everybody, I''m new to Xen so forgive me if this is already well known issue. I''m using Ubuntu server 7.04 (feisty) with Xen 3.0.3 Everything works perfectly, apart from networking in NAT mode. With bridging it works, with NAT it works, well, quite strange. Namely, pings go through and name resolution works. But when I try to use anything substantial, then

Hello! Recently,I¡¯m doing a security project based upon ipv6.I have built up a bridge to support a transparent firewall.(my system is Fedora Core 2,kernel 2.6.5).In this system ,the version of the iptables is 1.2.7,which does not support ipv6(I have tried it).Thus,I download a new version and test it. The iptables functions in bridge mode,but the ipv6 doesn't work well.In the

Hi all, I order to reach maximum performance on my centos kvm hosts I have use these params: - On /etc/grub.conf: kernel /vmlinuz-2.6.18-164.11.1.el5 ro root=LABEL=/ elevator=deadline quiet - On sysctl.conf # Special network params net.core.rmem_default = 8388608 net.core.wmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216

Hi all, i have a xen 4.3 installation and would like to have a bridge bond szenario: *** eth0 eth1 | | bond0 | br0 | vif = [ ''bridge=br0,mac=xx:xx:xx:xx:xx:xx'' ] *** With the network script in debian wheezy *** /etc/network/interfaces auto bond0 iface bond0 inet manual slaves eth0 eth1

Hi! The Netfilter project presents: arptables 0.0.5 arptables is the userspace command line program used to configure the Linux 2.4.x and later ARP packet filtering ruleset. It is targeted towards system administrators. NOTE: This is a release of legacy software. Patches may still be accepted and pushed out to the git repository, which will remain active and accessible as usual