Bridging is a forwarding technique used in packet-switched computer networks. Unlike routing, bridging makes no assumptions about where in a network a particular address is located.
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0answers
26 views
if there are 2 NIC on the same machine, can a tcp client on one NIC connect to a tcp server on the other NIC?
I use tun/tap to create a tun NIC tun0 with IP 10.10.10.2,
and I have a real NIC eth0 with IP 202.112.34.49
then I run a tcp client which binds its socket to 202.112.34.49 and a tcp server binding ...
0
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0answers
12 views
Virtual Box Router - Windows Host, Linux Guest [migrated]
I currently have Ubuntu Server running as the Guest OS in Virtual Box on a Windows 7 Host.
The Ubuntu Server gets its IP from DHCP and is Bridged to the my Network Adapter.
I've disabled Internet ...
0
votes
1answer
13 views
bridge on openVPN client
I have some problem with setting up what i call a "remote entry point" (i'm sure ther is a real name for this)
First things First : Here is my setup :
...
2
votes
1answer
57 views
Linux: How to simulate several IP- and MAC-Addresses for networktesting in one linux box
I want to test a network with one linux-box which should get 100 different IP-Addresses, each with an own MAC which should be used as source MAC-address when communicating to other devices.
I've ...
0
votes
0answers
35 views
Network bridge on windows server 2008 not working [closed]
I have the following problem:
I want to bridge 2 networks on Windows Server 2008 R2.
I do this by selecting both interfaces and pressing "bridge connections".
But after this I am not able to access ...
2
votes
2answers
30 views
Bridged network connection not working on Ubuntu VM
I am in a corporate environment and there is 802.1x authentication set up which is using my windows credentials + domain to authenticate. Setting up that information for my connection in the VM only ...
1
vote
1answer
28 views
openvpn (tun0 + bridge) : Comunication bridge --> tun0 works but not the opposite direction
My network is composed as follows:
Host A with ip 9.x.x.x and vpn ip 192.15.206.x (openvpn client)
Host B with ip 9.x.x.x and vpn ip 192.15.206.1 (openvpn server)
this host has a bridge br0 with ip ...
0
votes
1answer
43 views
VPN laptop as proxy gateway for Intranet computers truss bridge/bypass
I have a Windows 7 Enterprise VPN laptop to access my client's VPN network. During VPN session the laptop can not accept any request from my Intranet even if I open any door using Windows Firewall ...
1
vote
0answers
14 views
Changing the mac address in a libvirt xml config file breaks network connectivity for the guest
I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
1
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0answers
25 views
Network traffic is not being forwarded from a VM to the network using a bridged interface with Xen + libvirt
I'm having trouble getting network access from a VM that I'm running using Xen and libvirt. I've been trying different things and reading similar posts online for a couple of days but I'm really stuck ...
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votes
2answers
58 views
Linux Bridge allowing TCP but not UDP
I am using a linux bridge for monitoring some traffic on two vlans. I created two bridges br30 et br40 for each. My problem is that the TCP traffic make it through but not the UDP one. I thought of ...
1
vote
2answers
42 views
Disable IP on bridge
OK, I'm running libvirt on my server, I've only one interface, in order to use public IP in my VM I need to setup a bridge, everything OK so far.. But I don't want to setup a IP address at bridge ...
0
votes
0answers
30 views
OpenVPN bridge failed to forward packet
I have a pair of OpenVPN bridge working for my school. The bridge works well, it did bridge ip traffic between the 2 sites.
My problem is, if a user turn on a PC after the bridge has already started. ...
-1
votes
1answer
217 views
OpenVPN server on Windows 7 - How to route specific IP addresses to clients?
Okay, so I do not have a strong background per se in computing, nor networking, and I'm really just starting to learn this stuff now, for a relatively small family business of ours. It is rather ...
-1
votes
1answer
37 views
Debian bridged wifi connection doesn't start with system [closed]
I have t debian pc which is used as router.
I'm using hostapd for creating wireless acess point, and i've bridged ethernet and wifi using brige-utils.
My /etc/network/interfaces
auto lo
iface lo ...
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0answers
63 views
Routed libvirt/KVM network: response packets never reach guest
I'm desperately trying to get a routed networking up and running, but having extreme trouble with the setup.
My Dedicated Server has 2 public IP addresses in the same subnet. I want to use 1 IP for ...
0
votes
0answers
23 views
Route traffic through internal (VDE) bridge
I have two NICs configured, let's say eth0 with IP 10.0.0.1/24 and eth1 with IP 192.168.1.1/24.
IP forwarding is enabled, rp_filter is disabled.
I've created 2 tap interfaces and bridged them with:
...
0
votes
0answers
20 views
lxc bridged interface random connection losses
First, I create the bridge:
brctl addbr mybr
Then configure it:
ifconfig mybr 10.2.0.0 netmask 255.255.0.0 up
Then in lxc.conf, I have:
lxc.network.type = veth
lxc.network.flags = up
...
1
vote
0answers
76 views
debian KVM - network bonding fails with vlan and bridge
i have a Debian 6 system configured with 2 NICs
these NICs are used on a bond (bond0) which is used by bridge that require to use VLAN.
i can get connection between guests running on VLAN10 but it ...
-1
votes
0answers
14 views
Can't stream youtube behind my bridged AP [closed]
I have a local network that looks like this. ISP->Router->Ethernet->LinuxServerAP->Wireless.
The LinuxServer has eth0 that is connect towards the router and Wlan0 that is working as a AccessPoint(AP). ...
-2
votes
1answer
26 views
connect to tap interface [closed]
Im working on proxy
I have this setup
LAN---[eth0 tap0]
LAN = 172.16.0.0/26
eth0 = no ip promisc
tap0 = 192.168.0.1/24
I want to communicate LAN with tap0 ?
0
votes
1answer
55 views
Xen guest - cannot get network connection beyond the host
I've just installed a XenServer 6.1. It came with a standard configuration:
network 0 connected to NIC 0.
I created a VM but I can't reach any network beyond the host.
From the VM (172.18.32.20), I ...
1
vote
2answers
71 views
How do I bridge multiple physical ports in ESXi 5.x?
As the title says, is there a way to bridge multiple physical ports in ESXi 5.x such that they are not load balanced? I essentially want each physical port to be "plugged" into two separate ports on ...
0
votes
1answer
30 views
Creating a bridge for Xen
I am currently stucking at creating a bridge for Xen. My current interface file looks like this:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
...
1
vote
2answers
59 views
Default gateway and bridged interface
I have slackware based server with openvpn bridging, this is my settings of interfaces:
root@senior:/# ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet ...
0
votes
0answers
34 views
how to carp two interfaces on same node?
I have this CentOS machine with 2 interfaces.
eth0--> br0 (.10)
eth1--> br1 (.11)
Although part of the same network, each interface is being fed from a different switch. I use each bridge in ...
0
votes
0answers
23 views
Virtualbox: Port forwarding to an IP other than the hosts fails
I've got an Ubuntu server image running within virtualbox using NAT.
I've started LXC containers within that ubuntu server image and configured bridged networking so they all have an IP on the same ...
0
votes
1answer
86 views
how to connect two different lans [closed]
I have in my office two different LANS with two different ISP. Lan A is faster than Lan B.
We want to share files and printers and everything as if it was only one LAN, the thing is that we don't ...
0
votes
1answer
61 views
Can I bridge between two different networks?
I have a VirtualBox VM which has:
eth0: 10.0.2.15/24
default-gateway: 10.0.2.2/24
Within that VM I have 2 LXC containers (i.e. two other virtual machines)
VM1 - eth0: 10.50.50.50/16 (connects to ...
2
votes
1answer
140 views
VirtualBox bridged adapter can ping but can't curl
There is a delicate server running Ubuntu Server 12.04.2. There are 4 useable IPs for this server: A, B, C, D. The server itself takes A.
The server is now running two VirtualBox guests, both with ...
0
votes
0answers
68 views
OpenVPN: Run 'bridge-start' on boot before starting openvpn service (Ubuntu)
I've got OpenVPN working properly on my server, using bridge-start and bridge-stop scripts to create and remove network bridge, respectively.
How do I set these scripts up to run bridge-start at boot ...
3
votes
2answers
146 views
FreeBSD 9.1; bridge0 and default gateway issue
I've got a FreeBSD 9.1-RELEASE-p1 system with three nics, I'm using: igb0, sfxge1 and sfxge2. igb0 used for internet access and is default gateway. Other two nics, I need to use to create bridge0.
...
1
vote
3answers
268 views
Bridging eth0 to wlan0
I'm trying to create the followig setup:
+----------+
| Wi-Fi |
+----------+
...
2
votes
4answers
100 views
Differences between bridged and NAT networking
I don't fully understand the differences between NAT and a bridged connection over an virtual machine. As far as I've found, machines which are on the same network with our host machine can access our ...
-1
votes
1answer
66 views
Convert wifi to wired using wireless router [closed]
I have a TP-Link WR740N, a Raspberry Pi (With only an ethernet port for Network), and a Wifi connection. Is it possible to use the wireless router to bridge the Pi with the Wifi connection?
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votes
0answers
53 views
Ufw port forwarding on a bridged interface
I use UFW and here is my setup:
eth0 is configured as a bridge interface (br0):
inet adr:10.0.4.10 Bcast:10.0.4.255 Mask:255.255.255.0
eth2 is connected to a private network:
inet ...
0
votes
0answers
18 views
one csf on dom0 for all of domu
I have a server with debian 6 and installed xen with two PV linux on that.
these two PV will running two different website but i want only port 80 be open on them.
so, i want install csf only on dom0 ...
1
vote
0answers
94 views
arp reply is not processed
My eth0 interface does not process a legitimate arp reply.
When I try to ping a host, I see arp request and reply with tcpdump from the host I try to ping from, but ip neigh says that there is a ...
0
votes
1answer
71 views
KVM guest can't find gateway
I try to setup a KVM server with bridged networking. I followed the docs, but still can't get it working. The guest system can ping the host system and the host the guest system, so the connection ...
1
vote
2answers
280 views
Bridge networking static IP's to virtualbox VM's
Ok, so I have a dedicated server with the static primary IP address 89.200.xx.xx, it's running 3 VM's in virtualbox (all Centos 6 as is the server) and I have 3 other IP's that I want to assign to the ...
1
vote
1answer
73 views
Changing Linux Layer2 forwarding decision?
Are there tools to define in Linux something similar to Policy-based Routing, but on Layer2 level? Usual Linux bridge uses destination MAC to decide, which interface to send frame to. Can this ...
0
votes
1answer
178 views
VirtualBox Bridged Network to Debian Fails to connect [closed]
I am running Oracle VM VirtualBox Manager v4.2.0 r80737 on Microsoft Windows 7 and aiming to set up a bridged network to my Debian Linux 6.0 Virtual Machine to be able to connect to it via Local ...
-1
votes
1answer
52 views
Bridge all the network traffic through a computer, but keeping an endpoint [closed]
I have 2 network interfaces, wlan0 and eth0. wlan0 is connected to a router, which provides a DHCP service. What I'd like to do is, have all the traffic from eth0 to go to wlan0, including DHCP ...
1
vote
2answers
122 views
Ubuntu Server 12.10: set up network bridge in the initramfs pre-boot environment
In this scenario, I have a machine that boots its root volume off of iSCSI, and it only has a single network interface. If network configuration is done the normal way, then taking the interface down ...
0
votes
3answers
104 views
Cannot ping from a bridged inteface
I am trying to bridge between eth2 and br0 from ubuntu 11.04 within virtual box. There is network bridging to host physical machine.
From the guest OS after bridging I can ping from br0 but ...
1
vote
3answers
125 views
Bridge to a used eth1 card without losing connection via that card
How can I set bridge between a real eth card on a remote machine without losing my ssh connection to that machine.
I ssh into a machine via its eth1 iinterface. 172.168.40.2 255.255.255.0.
I ...
0
votes
0answers
114 views
Networking an LXC Fedora Container on Ubuntu 12
I've had a look at these but had no luck doing it myself:
LXC container network/routing issues
http://libvirt.org/drvlxc.html
I have an Ubuntu 12.04 dedicated server, with an Ubuntu 12.04 LXC ...
0
votes
1answer
132 views
lxc vm access outside the host
On Debian 64bit, I configured a lxc like this :
host ip : 172.16.0.25
vm guest on this host : 172.16.0.44
I've done the bridge on my host
auto eth0
iface eth0 inet manual
up ...
2
votes
1answer
138 views
eth0 on lxc does not work
I am facing some problems that the eth0 on lxc container does not work. I already tried
Bridging LXC containers to host eth0 so they can have a public IP, but it does not help.
On my host (Ubuntu on ...
1
vote
1answer
155 views
Static route without knowing the nexthop (linux)
I have an eth3 interface in a linux router, with an adsl modem. This adsl modem is in bridged mode, so the public IP is assigned to eth3 (say 11.22.33.44), and the modem is just not seen by my server.
...
