this is my config etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
[Code]....
the problem is the client which access through hostapd can connect to internet but the server no (eth0 is the interface connected to internet)
5.10 Breezy configured as machine controller. Works great eth0 is a fixed IP to communicate with controller comms board. Not easy at all to alter - the comms board is hard coded to listen on eth0 for commands.
I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.
Code: echo !HH | nc 192.168.1.6 80
I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?
I have a troubling networking situation that is compounded by the system being remote without any out-of-band mgmt in place nor a serial connection - but am relying on a coworker entering commands into the terminal for me, or doing stuff in the GUI I have an FC12 i386 install running, that was up and stable for 6 days. Primarily this was only being used for a deployment of nTop. Up through Monday evening, I was connecting to the system (in NY) via VNC (here in SF), and was successfully watching nTop do its thing.
Tuesday morning, I go to connect to SSH and I can't get in. The NAT translation is still in place on the firewall, but there is no connection to the NIC/eth0 from the router. This is what I've had my coworker run:
[code]...
I was going to try and have her run the /sbin/mii-tool eth0 tomorrow a.m. just to verify that the interface isn't physically bad? But this is a brand new desktop, and I can't for the life of me understand why this interface went down. I also have the internal IP on a DHCP reservation, which is the same IP listed in IPADDR in the ifcfg-eth0 file - could this be a problem? should I remove the DHCP reservation? I did this so I could SSH to a public IP which I have NAT'd back to the internal 10.0.x.x address I had my coworker take a look at the GUI, and the eth0 properties are "inactive" and the "Activate|Deactivate" buttons are greyed out.I suppose I can have my coworker grab the /var/log/messages and copy to a USB drive, then email me that from another workstation.
I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.
My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...
The G5
eth0 - Public IP - full LAMP services on two or three virtual interfaces
eth1 - Private IP 192.168.0.1
The G4
eth0 - Public IP for ssh
eth1 - Private IP 192.168.0.2
Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...
I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).
I'm running a dual boot Ubuntu 10.04/Backtrack 4 (Ubuntu 8.10) system. I can get internet in the BT4 side but not in the Lucid side. In Lucid I can ping my router, and the network manager says I'm good to go, but I can't get to any web sites. It all started when I tried to put my laptop on another network by mimicking the settings of a computer I had just unplugged from the network. MAC address and all.
ifconfig eth0:
Code:
eth0 Link encap:Ethernet HWaddr 00:1f:16:ba:4c:8c
inet addr:10.136.9.147 Bcast:10.136.9.159 Mask:255.255.255.240
inet6 addr: fe80::21f:16ff:feba:4c8c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
im trying to setup eth0 with subdevice eth0.0 and eth0.99 to come up at boot
eth0 is dhcp clint
eth0:0 is static ip
eth0.99 is 802.1q vlan interface
/etc/network/interfaces
Code:
auto lo
[Code]....
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
View 1 Replies View RelatedI try to generate a server client code. What i try to do is sending video streams from eth0 and eth1 to the other server programs' eth0 and eth1. In order to do that, i decided to use SO_BINDTODEVICE. But the code is not working. Am i misunderstood the usage of SO_BINDTODEVICE.
1-Defining two ports
2-Defining two sockets
3-Assigning host ips on them
[code]....
i have a root-server and a vserver.the vserver should provide services if the root-server is not reachable. i would like to configure heartbeat. its runnung on the root, but on the vserver i get an error: if i set the following in the ha.cf:
Code:
bcast eth0 # Linux
Code:
heartbeat[14629]: 2011/02/25_16:06:10 info: heartbeat: version 2.1.3
heartbeat[14629]: 2011/02/25_16:06:11 info: Heartbeat generation: 1298641135
heartbeat[14629]: 2011/02/25_16:06:11 ERROR: glib: Error setting socket option
[code]...
I'm working in windows, and that's why I have been able to access the network. In F14, I was able to access the router address while the internet access ain't. Tried restarting network, and still the problem persists. Tried [URL] and the only thing that i've infered is that IPv4 Failed: FATAL plus, the routing table showed 0.0.0.0 as one of the entries (Gateway). So, i've deleted the wired network configuration from the Network Configuration and checked whether the os would pick it up automatically. It still didn't work.
View 10 Replies View RelatedI'm trying to write an iptables config file, but got stuck.So I want to define an IP range that allows full access eth0-eth1 forwarding, and another that is allowed to access some special ip-s. The first part works, I could make the range has full access:
iptables -A FORWARD -m iprange --src-range 192.168.80.20-192.168.80.40 -j ACCEPT
iptables -A FORWARD -i eth1 -o eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -o eth1 -i eth0 -j ACCEPT
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward
But cant find out, how tom make the second rule. How could I put speicified target ip-s in this? I've tried to make a new chain:
[Code]...
I have a hardware device with two ethernet ports, eth0 and eth1 running Centos 5. Basically my goal is to forward packets from eth0->eth1 and eth1->eth0 as well as get a copy of these packets for analysis. If I set IP routing to do the forwarding then I won't get a copy of the packets for analysis.
View 3 Replies View RelatedI am using FC 2, and I get 'eth0 failed' during startup.
I am configured for DHCP
device is 'inactive' under network device control after reboot
click 'activate', sometimes I can surf, others not.
When I can't get online, sometimes deactivating and reactivating works.
edited connection to 'activate device when computer starts'
eth0 still fails at start-up, and device is inactive.
I am supposed to use FC2 for my schoolwork
If I uncheck and recheck "Enable Networking" in the Network Manager Applet 0.7.996 I would expect the wired network to disconnect (which it does) and reconnect (which it does NOT). So I tried sudo ifdown eth0 and got
Quote:
Ignoring unknown interface eth0=eth0.
ifconfig tells me
Quote:
eth0 Link encap:Ethernet HWaddr 00:25:64:e8:18:2c
inet addr:192.168.0.112 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::225:64ff:fee8:182c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
so I am at a loss. How do I stop and restart the network interface short of rebooting the machine?
My network name is eth2 it was changed by some reason and now i got these errors... i installed, reinstalled, re re installed, tried to run the asistant but no luck :/
Code:
* Stopping the Firestarter firewall...
eth0: error fetching interface information: Device not found
eth0: error fetching interface information: Device not found
eth0: error fetching interface information: Device not found
[code]....
I got two IP's in my dedicated server. Both are external IP's. I would like to make connections using 2nd IP address under eth0:0 interface. For example: when using "lynx whatismyip.com" should display my 2nd IP. How to do this using iptables ?
View 1 Replies View Relatedi know exactly what i need to do, im just not familiar enough with command line to do it properly.i have 7 computers.the first 4 are connected to a router via wireless at one end of the house. of the last 3 only 1 will be able to access the router via wireless, so it needs to share it's one wireless connection via ethernet. this computer i'm going to call 'server'server will have two IP'swlan0 192.168.1.6 this connects to the router that has internet access.eth0 i intend to have the following settingsip:192.168.0.1sub: 255.255.0eth0 will connect to a second router, where the cat5 cable goes from the server, into the internet port of the router where i will define the router's static IP:IP: 192.168.0.100sub: 255.255.255.0gateway 192.168.0.1i have then set the router IP for LAN handling as 192.168.27.1 and all ethernet connections will have a 192.168.27.x IP.
so i need to know how to, without a gui application, use the terminal to assign server eth0 a proper IP address, and tell the server to take the connection it has and share it through eth0 to supply internet for the last 2 computers via ethernet.i had it set up in this way with a windows machine being the one that had the wifi access, but i'd rather have it setup for the ubuntu server to do this task. security is imperative for these 3 remaining machines, so just getting 2 more wifi adapters for a connection to the initial router isn't an option.the 2 that connect to server do so through SSH and though server IS connected via wireless it only makes outward connections through
On my machine (Desktop PC) I have 2 network card : wireless (rt61 802.11) and a wired card (BCM44). When I install debian 5.
The wired card is detected and logical name eth0 is assigned, while wireless is not assigned I install firmeware* software to configure the card. It is done in some way ( I used mnetwork from mepis, it works fine).
Now the problem: eth0 disapears, and no eth0 inteface found? ifconfig gives just wlan0.
Question: Why there is no eth0, it was before configuration of wlan0 ?
How to active again eth0, or ho to create the logical eth0?
I'm not sure how long ago this happened but eth0 seems to have vanished from my computer. wlan0 works fine and when I plug into the switch there is carrier detect.
Code:
21:35:43 ~:$ ifconfig eth0 up eth0: ERROR while getting interface flags: No such device
21:55:49 ~:$ lspci 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) 07:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300 After that i have no idea where to search for problems next, any ideas would be greatly appriciated (can't spell) ubuntu 10.10
I'm about to add pci ethernet card. Currently the mobo nic is eth0. When I add the new card will it by definition be eth1 (or will it become eth0 and the mobo nic become eth1)? The broader question is: how are the "eth's" numbered at boot time? If I were to add a 2nd pci nic, could I predict which would be eth1 and which would be eth2 (based on pci slot number??)? Is there somewhere to readup on this to get a broader understanding?
View 1 Replies View RelatedI've set up Internet connection sharing, with Internet from wlan0 being shared to eth0 locally. Interface eth0 has the IP 192.168.0.1, since it's the gateway. Problem is, every time eth0 is disconnected, it forgets its IP, and then nothing works until I
Code:
ifconfig eth0 192.168.0.1
again.
Is there a way to permanently set the IP for eth0 to 192.168.0.1 so that it's remembered across disconnects?
I recently installed Lucid 10.04 on a P-IV desktop. The install went extremely smooth and Ubuntu was up and running. Hats off to the Ubuntu folks for the excellent user-friendly experience in the installation process. However , I have run into a networking issue. I connected my PC to the router issued by my ISP. This is a plug-n-play type of connection where the username/password settings are stored in the router and there is no configuration required in Ubuntu for accessing the internet. All I need to do is connect the router and my PC using the LAN cable. I was able to surf the net without any issues.
A few days later , this ISP service was down and hence I switched to another wired ISP. This ISP required me to dial a connection using another supplied router. I setup the connection using pppoeconf where I was asked to enter username/password. Again I was able to surf the internet without any issues. Next , I shutdown the system and before booting it , I switch back to my original ISP connection (the plug-n-play one). But now I am not able to connect to the internet. The router lights show that my PC is connected to it , but when I issue ping 192.168.1.1 to check connectivity with the router configuration, I get
Code:
$ ping 192.168.1.1
connect : Network is unreachable.
Also , issuing ifconfig does not show eth0.
NM-applet also does not appear in my notification panel at the top.
How I can go back to using my original plug-n-play ISP connection? I have read some posts about networking issues , but none quite like this one. Please note that all my Internet connections are Wired connections.
Here is my interfaces file
Code:
$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
provider dsl-provider
auto eth0
iface eth0 inet manual
Since my upgrade to 10.04 I can't use my eth0 wired connection.The wireless works fine.I have tried auto eth0 in network connections set to manual and dhcp. eth0 shows up in ifconfig but no address is assigned.
View 1 Replies View RelatedI have a 10.04 box connected to a router with DHCP and wireless. Lathough it can connect through the wifi, I can't get the connection working with the ethernet cable (which is the one I wanna use by default).
Code:
I may add that it's the default auto connection, but I've also tried to create one manually setting the right ip address, gateway, etc, and attributing the same ip on the router to the MAC address of the card. I've also tried to edit manually the interfaces file, with no effect, or no good one at least. This log comes from a moment when nothing has been changed from the original 10.04 installation.
And I have connected a laptop to this very same cable, and the connection worked straight away...
I am trying to setup linux box as router.
What i am trying to do is:
1. I am trying to setup NIC via network not NetworkManager
2. I have assigned the ip to both NIC with #ifconfig eth0 192.168.1.1
3. #Ifconfig shows my nic and ip
4. restart the service network .
5. #ifconfig shows nothing. NO NIC card
I dont want the network manager coz i dont want to install the gui on router and network manager works only in gui mode. ( i think my this understanding is correct)
I tried to configure the NIC with Network Manager
When ever i restart the network service i have no out put from ifconfig
I tried to configure the NIC with #setup command as well and select the dhcp option
I can not find any ifcfg-eth0 in /etc/sysconfig/networking-scripts/
Current problem: fresh, clean install of Ubuntu 7.10 on known good hardware does not use/produce/get/have an IPv4 associated with eth0, so cannot connect to my home network for Internet access.
Background: Have been wanting to build and maintain a home file server for some time now. Have also been wanting some hands-on practice to help me progress from Noob to Intermediate, eventually advanced Linux Tech. (I have two decades of tech support experience, but only small fraction of that using command lines and almost zero Linux.)
Anyway, every time I download and attempt to burn a recent distro on my Vista Shuttle, I only end up making drink coasters and mini-frisbees. so I thought that I might have better luck if I used a Linux Workstation to download and burn a server distro.
That's where I an now. I took one of my fully functional WinXP systems offline, replaced the WXP HDD with an old 3.2 GB, dug out my 2008 edition Linux Bible, popped in the DVD that came with it, and installed Ubuntu 7.10.
Everything else seems to have progressed smoothly, but I cannot seem to get the onboard Via chipset ethernet controller to talk to the router. When I run "ifconfig" in Terminal, I see IPv6 info, but nothing for IPv4.
When I try to configure eth0, it doesn't matter whether I set it up for DHCP or static... nothing works.
Is there a command line tht I can use in Terminal to manually configure eth0 to use IPv4?
I installed the netbook remix of 9.10 on a Dell mini10. (Dual boot with XP) I knew that I would have to install the broadcom drivers to get the wireless up and running. What I didn't anticipate is that the eth0 interface would not work. ifconfig shows the device and lists the ip as a 192.xxx number. I am wired directly into our network, and expect an IP in the 10.10.etc range. Pings either return a host unreachable message or say network unreachable. This problem persists even if I set the card to a known good IP. ifdown eth0 returns a message that the interface is not configured. ifup returns a message that it is ignoring the interface.After fighting that problem for a while, I re-installed, thinking that perhaps something had gotten fouled up in the installation process. The problem persists. Nothing has changed.
View 9 Replies View Relatedi installed and ran System Profiler & Benchmark ran a test. then i rebooted and turned off ACPI/PowerNow. at this point i realized my network card had gone down so i went back an turned the ACPI on. nothing changed.
View 1 Replies View RelatedI have a similar problem. My eth0 also disappeared after an upgrade to Ubuntu 10.04, and didn't come back after downgrading back to 9.10. The LEDs on my ethernet port are *not* flashing. Does this mean my network card is dead, or is there any hope I can get back online?
View 9 Replies View RelatedI have a wired connection going to my router, which is encrypted with WPA2-PSK. That works fine. I hooked up a WUSB54G v4 (Linksys USB Wireless Adapter), and used ndiswrapper to install the drivers from Vista to make it compatible with WPA2. Also configured the /etc/network/interfaces with the wpasupplicant lingo to make it all work. So if I do that, my eth0 will not work anymore. Also on a side note my network manager stops with displaying in the top panel. Not a problem I can run /etc/init.d/networking (re)start and dhclient eth0 (wlan0) and all the other commands that are necessary to make it work.
Back to the problem, so I hook up wlan0 with the settings and eth0 stops working. I want to use the wlan0 solely for the purpose of my media server. The eth0 is there for my internet and that is it .
How can I keep 'em separated?