Fedora Networking :: Cannot Forward Internet Over Bridge?
Feb 27, 2010
What I am trying to do: bridge 2 NICs in my linux box eth0 connects to linsys router (which in turn connects to internet) eth1 connects to Xbox 360
What I did:
Code:
ifconfig eth0 0.0.0.0
ifconfig eth1 0.0.0.0
brctl addbr br0
brctl addif eth0
brctl addif eth1
[Code]...
I'm sure this is a bridging issue and there is just some option I'm not setting correctly. Also, the reason I'm connecting the Xbox 360 directly to the linux box and not to the router is for traffic monitoring purposes. Note that all connections and functionality work perfectly when the Xbox IS connected through the router.
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Jul 3, 2009
I want to connect my dataone broadband connection in bridge mode in fedora 7. As i am currently using a bridge connection through this modem (smartAX MT882) in win XP, i want a bridge connection in fedora 7 too to access the internet from linux. I have gone through some forums discussing this issue. somewhere i have found the option "adsl - setup" and tried it in my fedora 7. But it is showing the message "adsl- command not found" on this issue. I need a detail step by step procedure for brigde connection using datone in fedora 7.
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Nov 24, 2010
My Laptop can Connect to my wireless modem device, but I don't know How can I connect to internet (ADSL) by My laptop (Bridge)?
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Jun 18, 2009
having trouble connecting to many websites due to recent actions of the Iranian government on banning a lot of websites.That's why, I decided to make my computer act like a bridge for their computers, so that they can surf the web using my Internet connection in US. I have Arch linux running on my desktop. I tried to install OpenVPN based on the instructions at ArchWiki page, but I had no success. I guess OpenVPN is too much for what I want to achieve and ArchLinux repositories don't have all the necessary packages to configure it based on some posts I read.
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Nov 13, 2010
I setup a network bridge on pc A, with windows 7 installed on it, using windows default bridging tool. I connected computer B to computer A and Im trying to connect to the internet through the network bridge on computer A. Computer B (client) has two OS's installed, win XP and linux(tried with different distributions, didnt work). On windows XP everything is working, when i try to ping the router (after computer A) it also responds. On linux system nothing is working, and im not quite sure why.
I set up linux to receive IP adress from DHCP, which is router in this case (behind computer A), same way windows XP was configured. I decided to ask here, because I couldn't find anything on the net. My guess is windows-made bridge supports only windows-OS's but that would be kind of strange (its just a software bridge).
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May 6, 2011
I just upgraded my fedora 13 to fedora 14. I changed the cpu and the motherboard so i had to install from scratch...but I saved my iptables.
The problem is that
I do all the suff
service iptables save
And apparently it works...
But everytime I reboot I have to re run the script to forward Internet...Everything else works just fine...I mean I can ssh, vnc, etc but wont forward intel :S dont know why?
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Dec 8, 2008
I want to set up a bridge using bridge-utils within /etc/network/interfaces like is shown here in this guide: [URL] The problem is that, at the same time, I want eth0 to have a specific static IP address. Right now I have a configuration for eth0. This guide tells me that I should not configure eth0 outside of the br0 configuration.
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Aug 9, 2009
I have 2 NIC's in a box. One of them is external and doesn't matter for this question I don't think.
The other NIC is 192.168.100.3. It hosts an iSCSI Target and SMB Share on my LAN. It's works great.
I have another PC that has NIC at 192.168.100.101 and it hosts my DHCP (Scope: 192.168.100.5-25) server for my LAN.
I have a hardware firewall at 192.168.100.1 and it serves inet to the LAN on a different external connection.
So...
I currently have a WAP (cheap p.o.s. netgear router in WAP mode that keeps overheating). I want to eliminate the WAP device and add a WiFi NIC to the Top PC above.
So, on the first system I would have:
NIC 1: External IP and External Gateway
NIC 2: Static IP 192.168.100.3
Proposed WiFi NIC 3: Static 192.168.100.4
Question:
If I bridge NIC 2 and NIC 3 like this:
# brctl addbr br0
# brctl addif br0 eth0
# brctl addif br0 eth1
Then I simply put the WiFi in Ad Hoc, will another WiFi in Ad Hoc (for example my laptop) be able to "see" 192.168.100.101 (DHCP) & 192.168.100.1 (Gateway) (via WiFI 192.168.100.4 through the bridge to 192.168.100.3 and on to the LAN)?
Also, can the two NIC's be bridge together even though they are the SAME subnet?
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Oct 4, 2009
I tried google but without success. I have a small home network and one computer has to work as a bridge (comp1), it connects to the internet through wlan and is connected with cable to other computer (comp2), I would like to to make that second computer member of a local network with internet access.I was trying this:
Code:
ifconfig wlan0 0.0.0.0
ifconfig eth0 0.0.0.0
brctl addbr br0
brctl addif br0 wlan0
brctl addif br0 eth0
[Code]...
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Aug 3, 2009
I'm trying to set up a Linux box with three ethernet interfaces as a bridge where I can do some packet filtering. I don't want this box to have any IP stack, packets that are allowed through the filter should be forwarded without changes just the way a switch would do it. I have build a kernel with ethernet support but no IP stack. It detects my interfaces, and I can bring them up with the ifconfig or ip commands. But when I try to start a bridge with brctl I get this error message:
can't setup bridge control: Address family not supported by protocol
A google search for that error message gave me no results at all. The command I used was "brctl addbr br", which does work on a full installation. Does brctl require IP support in the kernel? That would be a bit odd I think, since brctl doesn't do anything IP related, everything it does is at lower layers?
Does anybody know what the above message means, and what I might have been doing wrong?
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Apr 21, 2011
I'd like to pass all traffic between bridge ports via the FORWARDING chain, so I changed following sysctl parameters:
Code:
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
[code]...
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May 29, 2009
My current network setup at home is all wired, and that's worked for me so far. Now I want to set up a wireless connection on my Linux box that I can connect to with both my laptop and my Nintendo DS. I'd like to be able to host a wireless network from the Linux box, connect to it with some other wireless device, and have the wireless device communicate with the router, the internet, and other computers on the wired network. I have the wired network set up (statically configured) as eth0. Other network adapters present on the system are eth1 (not in use) and wlan0, wlan1, and wlan2 (identical cards, remnants from the last time I experimented with wireless).
So I guess my question comes in two parts:
1) How do I set up wlan0 such that it can host? Is Ad-hoc mode okay for this, or do I need to set it up in Master mode?
2) How do I forward connections between the wireless net and the router?
Note that I will be using WEP, as it is all that the NDS supports. I'd like to set up MAC filtering as well, but not until after I get something that works.
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Oct 2, 2009
"I am new to Linux. Could you please guide me how to make ADSL bridge connection. I have tried to make connection using Network manager. But, it some times works and some times doesn't works."
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Nov 5, 2009
How do I configure a network bridge to start on boot?
I have two network interfaces eth0 and eth1.
Here is my current network script configuration:
Code:
#/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
HWADDR=00:10:18:4e:5e:a7
[Code]....
The bridge will come up if I restart the network service after boot....but it won't automatically come up when the computer starts.
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Nov 18, 2009
I am trying to set up bridge, and everything seems to be ok, except 1 thing, it disappears after reboot. So, what I am doing:
Code:
brctl addbr br0
brctl addif br0 eth0
and adding /etc/sysconfig/network-scripts/ifcfg-br0, here it is:
Code:
GATEWAY=192.168.1.1
DEVICE=br0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
and my ifcfg-eth0 is:
Code:
GATEWAY=192.168.1.1
DEVICE=eth0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
How to make it working after reboot?
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Feb 3, 2011
what i want to do is
client <--> wlan0 <--> computer <--> eth0 <--> internet
i have 2 network connections eth0 wired connected to internet wlan0 wireless (work fine) i have installed hostapd with madwifi and so on oki when i run hostapd the clients see the hot spot oki clients connect with wpa oki network manager run at demand not automatic (keep it for internet help) now i'm a bit lost what do i need is wlan0 give the client an ip (dhcp demand) create a bridge between wlan0 and eth0 steps to create a permanent bridge between wlan0 and eth0
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Feb 22, 2011
I have setup hostapd and a bridged setup with br0 bridging eth0 and wlan0. The setup works but unfortunately not on bootup. The reason is that the bridge can't add iface wlan0 because it is down for some reason at this time. When hostapd is running (after the network script) the interface is up and can be added to bridge via
[Code]....
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May 7, 2009
I need to forward a port to use dtella. I'm using Fedora 10, using iptables for my firewall.
I'm currently trying to forward it from terminal with this command:
Code:
sudo iptables -t nat -A PREROUTING -p udp -i eth0 -d [ip address] --dport 11823 -j DNAT --to 192.168.0.2:80
this is what I get from iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
[Code].....
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Feb 26, 2011
I am new to fedora and I've installed fedora 14, I want to know what are the steps to make my machine act as a transparent (IP-less) bridge? Second, after setting the bridge, I want to make all the packets that passes through the bridge execute a servlet filter (to make some tests and add cookies) is it possible? Is there a simpler way to do those tests on the packets and add cookies?
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May 20, 2009
I'm using Fedora Core5.0 I have using Iptables for forward port 80 to port 3128(Squid) in the same of server.I need to forward using Iptables to use the other proxy server because this server i am use for vpn and mail tranfer.What a Commnand for i use?ase 1. Server 1 >Ip 192.168.0.4 SQUID WITH PORT(3128)2. Server 2 IP 192.168.0.254 PF SENSE (3128) I will use server 2 for using internet connect only.
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Mar 12, 2011
I have installed opensuse 11.4 xen on a HP ML115 G5 AMD Opteron server, which previously hosted a fully working opensuse 11.3 xen. The problem seems to be that br0 is not showing as a bridge device in network settings. When I first installed opensuse 11.4 networking was available via dhcp, I then installed the xen tools and answered the prompt to create a bridge, it was only when I re-booted the system that I lost my network connection.
Going back into network settings I compared the settings to an existing working opensuse 11.3 xen install that I have and noticed that br0 is not showing as a bridge device in network settings so cannot be selected, in fact no bridged devices are shown.
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Jan 27, 2011
I'm interested in installing Privoxy on CentOS. I have two nics and would like to setup this on my network. One nic will be inside and all computers will use the inside address to get to the proxy. The other nic will connect to my FW and forward traffic to the internet.
I understand I need to change config file for the listening ip "inside ip:8118", but how do I forward out the the outiside interface to get to the internet? Does Privoxy just pass the DNS request like web traffic?
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Jul 9, 2010
I want to connect my modem straight to my fedora 13 box, using it as a firewall, and I want to use my wireless card to set up an ad-hoc to give internet to the windows computers in my house. My router has been messing up and I am trying to create a quick fix until I can solve the problem.
My eth0 has internet connectivity but when I use the brctl command to try to create a bridge it doesn't let me add my wireless card, wlan0, and also I lose internet while my eth0 is in a bridge. I am fairly new to Linux.
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May 16, 2010
While I have Transmission running, whether it be up/downloading or just open with one thing unpaused and no activity, all other computer functions that need internet access are unusable. Transmission says my port is closed in its preferences.
1. How do I find and open port?
2. Will finding an open port solve the problem of all things internet not working while Transmission is?
3. Do I need to create a static ip in order to forward a port through my router?
4. Will creating a static ip and forwarding that port solve my problem of only being able to use the internet while Transmission is on?
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Jan 3, 2011
I have a computer who has a wireless card I use for my local network and Internet. I have a second network card on this computer (onboard lan card), that I would like to use to forward an Internet connection to a older-generation laptop computer.
Main Computer Connection to Internet:
Internet > Wireless Router > Computer A
Laptop Computer:
Computer A > Laptop (via cat5 cable connecting my main computer to the laptop)
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Sep 1, 2011
I am making a content filter for a school. I have a computer with Ubuntu Server and the SOCKS proxy, a DD-WRT router, and a switch. how I could forward all requests through the SOCKS proxy before sending it to the Internet.
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Jun 19, 2011
I have an adsl modem acting as a bridge to my router my setup was working well for more than year now , but then the internet went slow . I set the modem back to PPPoE the problem was with the DNS server of the ISP so using ifup i set the dns t 8.8.8.8 (google) the connection is back , but when i set the modem back as a bridge slow internet does the router know that my dns is 8.8.8.8 or i should set the dns on the router ? I can't see an option to set the dns on the router ( i just enter my username and password from the isp to use PPPoE mode ) by the way i called the isp support they kept telling me to restart , i told them i did but i never restarted my pc . I'm sure if i tell them i'm running linux they will blame the os !
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Feb 25, 2011
I'm on opensuse 11.4 (11.3 won't work with my monitor).
My computer gets internet through wireless and I want to share that internet through its ethernet port. So far I've tried using Knetworkmanager to create a network bridge between my wireless and wired connections. I created a new wired connection and shared it using the ip address settings. I was able to get both connections active, but the device hooked up via ethernet had no internet connectivity.
I also tried this command:
echo 1 > /proc/sys/net/ipv4/ip_forward
but another test resulted in the same fashion (no internet on wired). I believe anything I add to /proc should have an immediate effect, correct?
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Mar 30, 2011
i have two ISP, and i want to bridge each IP. Here my example;
ISP one : 10.10.10.1/29
ISP two : 172.16.100.1/28
can we setup for two ISP with different gateway ??
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Jul 19, 2010
I have a Gateway laptop running ubuntu 10.04, and just now have a compaq desktop running windows 7, my laptop has wireless internet connection, it's the only way that i can get it in my room. my desktop has only ethernet plugin. My question is, If i plug my laptop up to my desktop using an ethernet cable, can i bridge that connection to get internet from my laptop(using the wireless) to my desktop(using the cable)
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