I have installed CentOs 5.4 for Snort sensor , on the location where i intend to place the Snort sensor to listen for internal firewall leg (LAN) the switch doesn't support port mirror so i would like to create with 2 nic's bridge and pass trough the firewall internal leg my question how do i set such configuration.
View 2 RepliesI have a network config as follows:
X.8 <---> X.41 X.40 <--->X.16
where X.8 and X.16 are 2 separate workstations and X.40/X.41 are two interface cards in the same machine. Now I apply brctl bridging in the X.40/X.41 machine by adding both the interfaces to the bridge and thereby connecting X.8 and X.16. This part is working perfect. But there is no connectivity between X.8 and X.41 and when I try to ping at X.8 to X.41 it gives Destination Host Unreachable. Is there a way to achieve this since I require some message to be sent from X.8 to the X.40/X.41 bridge machine.
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.
View 3 Replies View RelatedI've successfully install kvm with private network (nat) up running. I want to switch the kvm network using bridge mode (or host-interface), but do not success. env: nic iwl4965/ kernel 2.6.27.8/ debian etch upgrade to lenny/ kvm 0.9.1/ hardware hp 6910p The doc I follow up is at [URL] The way how i set it up is to modify /etc/network/interfaces by adding following section to enable br0
Code:
allow-hotplug br0
iface br0 inet dhcp
bridge_ports wlan0
bridge_fd 9
[code]....
However, the problem is the guest os, which starts with -hda k1.img, can not access to the internet. Is there any step I miss? or it is because wireless does not support bridge (I've heard doc says that wireless does not support wireless bridge)?
I have OpenVPN running on my Ubuntu Server just fine. I can connect over the Internet and access all my resources on the LAN via bridged mode perfectly. My server only has one LAN card and sits behind my router, which means it has a private IP address of 10.1.1.2....Which brings me to my question. I want to open up access to my friends via OpenVPN, but I don't want them to be able to access other machines on my LAN (e.g. 10.1.1.20). However, I do want them to be able to talk to each other and pass broadcasts (old LAN games), as well as my laptop (let's say 10.1.1.7).I've tried using iptables to block traffic to the LAN (such as .20), to no avail. I've been reading up and it seems as though iptables won't even filter the traffic, as it's passed at a lower layer. Is this true? If so, what do you recommend I do in order to prevent my buddies from accessing the rest of my LAN while siumultaneously allowing broadcasts pass for some very old Windows LAN games (we're talking Windows 9.
View 2 Replies View Related setup linux in bridg mode for my windows server ?
my both linux and windows has 2 network cards each.
basicaly it is vLan cards, each server has 2 network cards. one to main switch and one to local IP.
data will be going like below:
internet ----------------> eth0 --> linux --> eth1 ----------------> Windows.
i have vLans on both servers. And i need cross connection setup. And use linux in bridg mode / cross connection .
actualy i want to use Iptable rules to filter bad packets and forward good packets to windows. i have scripts how to forward packets to windows. but the problem is i dont know how to setup both servers in this topology. and how to make linux as bridge.
All it should be in transparent mode. Not in NAT mode.
I have 2 wlan cards. wlan0 and wlan1. wlan0 is in AP mode(Master mode) using hostap. wlan1 is connected to another wireless network and is in Managed mode. Now I want to make a bridge between wlan0 and wlan1. I do it like that:
ifconfig wlan0 0.0.0.0
ifconfig wlan1 0.0.0.0
brctl addbr mybridge
brctl addif mybridge wlan1
can't add wlan1 to bridge mybridge: Operation not supported
It doesnt work, because wlan1 is in managed mode. But Windows 7 can bridge 2 Wlan cards when one is AP and another one is STA. How to do it in Linux?
How would I configure my box to connect to a modem in bridge mode?
I have a server at home that im migrating over to be the default-gateway/router. I have everything else setup (dns,dhcp etc) now just need the ppoe part, or so i beleive?
I have two interfaces. eth0 (lan) and eth1 ready to connect to the modem.
The modem is in bridge mode ready to go.
What is my next step? Are there any good guides, I didn't find any.
I've currently got a Xen box with 3 Virtual machines on it, in a routed setup. I'd like to put them all on a private internal network as well, which I'm assuming I'd do with a dummy network card and a xen bridge, but I can't find any information about setting up the xen Bridging setup on top of the existing network-route instlal.
View 1 Replies View RelatedHow do I setup a network bridge in Linux (Ubuntu)? I want to use my computer as a "router" for my Xbox 360.
View 2 Replies View RelatedI am running ubuntu 9.10 on a dell xps m1530 laptop dual booting with windows 7. I am trying to achieve the following setup.
Wireless router <=========> Laptop <-----> Switch <-----> PS3
---- wired
==== wireless
Both laptop and ps3 have static ip addresses
The reason for this is I can connect to the internet on my ps3 through my laptop, and I can stream from my laptop to ps3 through wired connection. This works fine in windows 7 all I had to do was right click bridge connections. As I dual boot I don't want to have to make any changes to the settings on the ps3.
My interfaces are:
eth0 - wired
wlan0 - wireless
I installed bridge-utils and created a bridge and added both eth0 and wlan0 to it. However I could not get it to work. I have also tried internet sharing through network manager and firestarter.
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).
I am trying to set up a network like this:
Internet <---> Router <---> Debian server <---> Windows PC
I want the server and PC to both have internet access, and I want to be able to forward ports from the router to the server. I know how to configure the server to give the PC internet access, but how would I assign an IP address to the server and give it internet access? I have used a very similar setup a few years ago, but I can't remember how to do this.
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.
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?
I have a small pc running fedora 8 with iptables and 2 network cards for routing/firewall and secondary DNS.For some time I've been alerted by the network guys that this machine was generating some alerts. The real network IP address keeps being assigned to the other interface, intended for LAN only (10.0.0.1/24).I've already changed the PC, installed a more recent operating system, replaced the 2 network cards and the problem persists. I have another pc running the same services (except DNS) in a very simillar way and no alert logs from that one.onder if it is some configuration issue on my startup firewall script.I've also installed arpwatch and I could confirm this IP and physical address issue:
Arpwatch output:
hostname: my.host.name
ip address: my.ip.address
[code]....
First of all, this tutorial will use NDISWRAPPER, not b43, not wl (Broadcom STA). So, hooray for new method (actually, the only method ). Now, I don't want anyone to get scared because of bad experiences with Ndiswrapper or whatever, it's actually quite easy. I did not come up with any of this info. I'm just putting this guide together from Kacper Szczesniak's info (who came up with this method), WifiDocsDriverbcm43xxFeisty_No-Fluff from the Ubuntu Wiki, and my experience. The Broadcom STA (wl) driver has references to monitor mode in it's code, but does not have that functionality in reality. The Broadcom Windows driver on the other hand does have this capability. So, for monitor mode to work, you will need a patched version of ndiswrapper.
1) Install the Linux kernel headers:
Code:
sudo apt-get install linux-headers-$(uname -r)
2) Install the tools required to compile Ndiswrapper:
Code:
sudo apt-get install checkinstall dh-make fakeroot gcc build-essential
3) Unload current Ndiswrapper module, if running:
Code:
sudo rmmod ndiswrapper
[code]....
I followed this tutorial => https://help.ubuntu.com/community/OpenVPN
I'm working on ubuntu 10.10 OS
So everything is ok when i start the tutorial with my interface on code...
The only way I can make it work again is by setting the interfaces back to
auto lo
iface lo inet loopback
>> then reboot
and after that put back the br0 settings in the interfaces en restart the network.
So I am looking to modify my network cards MTU (for some testing purposes), and I only know how to do it it Windows (via command prompt ping command with special flags) and not in Ubuntu.
Any easy way to figure out proper MTU numbers in Ubuntu?
I have installed slackware 13.1 64-bit version and can not recognize network cards.I'm with laptop acer aspire 7540g.Wireless card is atheros ar5b93.Ethernet card is Broadcom NetLink � Gigabit Ethernet.
View 16 Replies View RelatedOk, so I've gotten tired of my router, and I've decided to make my own using IPFire as the OS. Right now I'm looking for ethernet cards that I can use for the green network, but I don't know if I can use 2 for the same network. I'm trying to get 4 ports at 1000 Mbs, and the only thing I've been able to find so far that's within my price range is a card from startech that has 2 ports, but would I be able to use 2 for the green network?
View 3 Replies View RelatedI set up a bridge device but I can not figure out how to pass parameters into the ifcfg-vmbr0 in particular I need to pass:
maxage
ageing
fd and stp seems to be passed by DELAY=0 and STP=on the others? I have not found anything in the post, tips, docs how could I do?
I've got two NICs connected to two different routers, and on different subnets of course. Each is set for static IP. But somehow I must have mixed up the connections at some point, so the NICs don't always have the IP addresses I expect. I think there may also be a mixup with different ways of setting the network addresses. When I click the Network Icon on the Desktop, I see that each NIC has both addresses as options. The /etc/network/interfaces file has some information about eth0, but all commented out, so there must be another place the addresses get set. And I just discovered that eth0 and eth1 aren't physical but virtual. I guess eth0 is the first one that is set.
View 2 Replies View RelatedI'm new to Ubuntu - I've decided to give Ubuntu Studio a go as an alternative to Windows. However, after installing it, neither of my network cards work. I have a Intel Pro Wireless 3945ABG wireless card, and a Broadcom Netlink Gigabit Wired card. Neither work, And I'm not sure how to. I've tried searching, and have come up with the .tgz file here, but I have no idea what to do with it I'm concentrating on the wireless card for the moment, seeing as that will be the main one I use.
View 4 Replies View RelatedI'm running xubuntu 10.04 LTS (upgraded from 8.04 LTS) on an old low power sempron machine as an always on 'internet machine' i.e. it does all my downloading email etc. and up until yesterday it has always performed flawlessly. Yesterday wasn't its fault, it was a BTI network problem that took out my internet service but while talking to tech support I realized that this machine has lost all ways to control the network cards. Network-manager and network-manager-gnome are installed according to synaptic but they have no menu or notification appearance. I've tried reinstalling them to no avail.
View 8 Replies View RelatedI wonder what is your opinion about the best method for using an ADSL modem. Router or bridge? I did read some articles that say "that the bridge mode gives you more stability and has higher speed". Is that true?
Furthermore, you suggest any alternative to "pppoeconf"? I've been getting this errors ( in the plog), related to "PAD packet loss" and also errors in "PPPOE Discovery", even when I am connected. When this things starts to show up on the log, my connection "pauses" for some seconds. I do not feel very safe with this program.
I have a fedora 10 box with two network card on eth0 I have a pppoe connection to the internet, on second card eth1 I share my internet connection end I set up a samba server but I don't know if the settings are good. How to do this settings right to work fine, the ip are assigned by dhcp I don't use any static ip .When I try to browse the internet from the other computers some site's like {.com ; .org ; .info} are block, other site from {.ro} are working. Someone tell me something about turn off all my filters, but I don't know where to find this filter to turn it off. And when I use samba I can't have and internet access or vice versa. My network look like that:
Code:
eth0
|<--pppoe connection
|
MyComputer
(fedora 10)
|
eth1
|
switch
|
comp.1 comp.2
Win OS MacOS
I've got two network card interfaces on my computer, one wireless and one wired. The wireless card is connected to the Internet and the wired is connected to the LAN. When only the wireless card is active, Internet works. As soon as i enable the second wired card, Internet stops working. And it seems like Ubuntu chooses the wired card for Internet as soon as it's enabled.
Are there any ways to solve this? So my Ubuntu box always chooses the wireless card for Internet traffic and let me use the wired device for LAN only?
I'm trying to setup openVPN on debian, well this worked. But every client will get the same ip (172.17.0.6 - local it is). how to set my server in bridge mode. I've read about: server-bridge LOCALIP 255.255.0.0 172.17.1.20 172.17.1.100
BUT, my server has no ipv4 address, but only ipv6: 2001:41d0:2:b2d6::542a:74a so I am not sure how I can do this.
I configured squid in transperant proxy and it's working fine.Now i tried it in bridge mode for that i did setup for bridge mode and it's working fine.But i can not get any http request in squid access log.i can see traffic from my bridge. tcpdump -i br0
configure bridge:
ifconfig eth0 0.0.0.0
ifconfig eth1 0.0.0.0
brctl addbr br0
brctl addif br0 eth0
brctl addif br0 eth1
[Code]...