Networking :: How To Bring Up Two LAN Cards On Net Config

Jun 11, 2011

I installed slackware 13 successfully. The problem I found is: I have 2 lancard, one is built in, other is external. When I net config it brings up 1 lan card not other. When I again netconfig it brings other lancard and now not the 1st one this time. thats means it bringing up any of the 1 lancard at a time. how both lancard can be bring up.

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Ubuntu Networking :: Bring Up An AD Login Screen On Startup?

Apr 12, 2010

I'm connected to a domain, but I want ubuntu to bring up an AD login screen on startup. How can I do this?

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Fedora Networking :: F11 - Service Network Restart Does Not Bring Up All Interfaces

Jun 23, 2009

If I restart the network service, not all interfaces come back up. Is this expected behaviour or does something need a kick?

Code:
[root@@aspire3500 ~]$ service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface wlan0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
[root@@aspire3500 ~]$

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Fedora Networking :: Using NMCLI To Bring Up Mobile Internet Connection

Sep 19, 2010

I can use nmcli to bring down and back up again my wireless connections but it doesn't seem to work with my "Mobile Broadband" connections. It works to bring down my mobile internet with :

Code:
nmcli con down id OptusInet
But when I try to bring it up again with :
Code:
nmcli con down id OptusInet
It says :

Code:
Error: No suitable device found: no device found for connection 'OptusInet'.
Even when I add the device with :

Code:
nmcli con up id "OptusInet" iface ttyUSB0
It says :

Code:
Error: No suitable device found: device 'ttyUSB0' not compatible with connection 'OptusInet'.
Am I doing something wrong?? Any ideas anyone??

Device info for my mobile device :
Code:
[my_prompt]$ nmcli -p dev list .....

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Ubuntu Networking :: Change Network Card And Bring Eth0 Up

Mar 14, 2010

I run an Ubuntu Server in a Virtualbox environment. Setup works fine. In virtualbox, I accidentally hit a button that generates and assigns a new mac address for the network adapter. Since then the machine does not bring eth0 up. I tried the following ifconfig eth0 down; ifconfig eth0 hw ether macaddress; ifconfig eth0 up. Then restarted networking.

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Ubuntu Servers :: Dns Server Started With 2 NIC Cards - Bios Sees Both Cards But - Both Dont Show In Ifconfig

Dec 1, 2010

I have a dns server started with 2 NIC Cards in it. The bios sees both cards but they both dont show in ifconfig. is there a way to activate the second card?

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Fedora Networking :: Bring The External Device (192.168.1.9) To The Set Of LAN Devices That Receive LAN Broadcasts?

Aug 18, 2009

i have an isolated LAN (no connection to outside) with 3 fedora boxes. Suppose one of the boxes has an IP device connected to the serial port. We use SLIP and slattach to configure it and we can ping the device from every fedora boxes. Is it possible to bring the external device (192.168.1.9) to the set of LAN devices that receive LAN broadcasts?

box 1: 192.168.1.1
box 2: 192.168.1.2
box 3: 192.168.1.3.

It runs slattach and uses 192.168.1.9 to address serial connected ip device. I set up this scenario and the external device is ping(ed) with success but if I build a socket udp program that sends a broadcast to the LAN all the fedora boxes receive it except the external serial device. Why.

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Ubuntu Networking :: Ad-hoc Network Doesn't Survive A Reboot / Avoid Having To Bring Down And Up Interface?

Mar 1, 2011

I'm configuring an HP Mini 110 (wireless BCM4313) to use it as a small Access Point (ad-hoc mode).

I want to make my configuration reboot friendly. With what I have right now, as soon as I reboot the laptop, the wireless interface configuration isn't correctly setup. I have to do "ifdown eth1; ifup eth1" manually.

Here is what I have in /etc/network/interfaces for the wireless interface code...

So the question is how can I avoid having to bring down and up the interface?

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Ubuntu Networking :: Using 4 NIC Cards?

Jul 13, 2011

I am setting up a class using a vmWare ESX server. Because of security proceedures, the students are not allowed to connect directly to the internet. Because of file space, the are severated on 3 servers. I am trying to set up a server that connects to the internet and all 3 subnets that the students are on.

I have configure 4 virtual NICs 1 with DHCP connected to the internet. The other 3 goes to each student network. I can get 2 working at a time. 1 using the DHCP and 1 of the other networks. It seems to be order dependent. On the main server I can ping the local address. When I ping the students systems, I can reach 1 but not the other 2. I get a host unreachable message.

Is there a limitation to 2 NICS. If not, is there any magic incantation to run the 4 nics?

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Networking :: IP Keeps Changing Between Network Cards?

Jul 8, 2010

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]....

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Networking :: Won't Find Ethernet Cards

Sep 15, 2010

I am writing a new lightweight Linux distibution mainly for educational purposes. I have a problem; it won't find any ethernet cards. I have tried enabling several things in the kernel config. What I would really like to know is how to enable some generic ethernet drivers and therefore networking. I would like to avoid having to use modules. I'm using kernel version 2.6.35.1.

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Networking :: 2 Isp On 3 Lan Cards / Cannot Get Internet Packets From The Second Isp?

Jun 7, 2011

we are using Red hat enterprise 5.4 for our internet connection with following ip's

eth0: 192.168.1.2 (local lan)
eth1: 114.143.28.240 (static ip address for 1st isp)
eth2: 192.168.100.149 (2nd isp modem connected with lan cable)

first isp i.e tata internet connected to the internet and working very well

now i want 2nd isp to work when the first isp goes down, i had configured all dns in the resolve.conf and squid.conf, when i switch off the 1st isp for checking that failover is working or not i cannot get internet packets from the second isp.

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Networking :: Dhcp Wants To Provide Two Different NIC Cards

Apr 2, 2009

I want to provide dhcp in different NIC which are eth3 and eth2. eth2 has the IP address of 192.168.3.1 and eth3 has the IP address of 192.168.4.1. I want to provide dhcp to 192.168.3.0network and also for 192.168.4.0 network.All these are done in ubuntu server.

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Networking :: Bound Two NIC Cards Which In Different Networks?

Jul 12, 2010

I have two NIC card that connect to different networks. code...

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Fedora Networking :: Bring Up Wi-fi PCI Card (ifup Wlan0 Or Ifconfig Wlan0 Up) Whole PC Just Hangs Until Power It Off

May 20, 2009

When I try to bring up my wi-fi PCI card (ifup wlan0 or ifconfig wlan0 up) my whole PC just hangs until I power it off.

I believe I have the right drivers, but cannot see what I am doing wrong.

I'd really prefer not to go down the ndiswrapper route.

Firstly, I can see the PCI card and the driver it is using :

Code:
[J@gx260-f10 ~]$ lspci -k
...
...
01:08.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller (rev 20)

[Code]....

the PC just hangs for ever. No mouse movement, ctrl-alt-del, nothing.

I have downloaded a Linux driver from Realtek but it will not compile. I have the latest kernel-devel, headers, and gcc. I can post compiler errors if anybody would like. They're all apparently to do with missing parameters.

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Ubuntu Networking :: Modify Network Cards MTU?

Apr 12, 2010

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?

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Ubuntu Networking :: Two Nic Cards But No Port Forwarding?

Jul 6, 2010

I have two nic cards installed in a Lucid LTS server.

eth0 is static using
address 192.168.0.235
gateway 192.168.0.1
netmask 255.255.255.0

[Code]...

I have my Qwest DSL modem port forwarding port 80 to 192.168.3.235 however this doesn't seem to work if I have both cards running. If I remove the second card (eth1) and reconfigure eth0 to use 192.168.3.235 I can port forward into my webserver.

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Ubuntu Networking :: Wireless Cards Just Work (perhaps Usb)?

Aug 11, 2010

I'm running 10.04 64 bit, and the Intel PRO/Wireless 5100 AGN does not work with n routers. I'd like to either upgrade the card, or buy a usb adapter, but I can't figure out which cards will work. I've searched[URL].. which lists supported wifi cards, but most of the info on that page is not relevant to lucid, and hasn't been updated at all this year. I saw elsewhere that any card with the atheros chipset will work, but what cards have this? Will all of them with this chipset work?

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Ubuntu Networking :: Setting Up A NIC Bond With 4 Cards?

Jan 29, 2011

Got 4 onbards nics and would like to bond them into a single 4GB pipe. It is running a number of VM's. I can set up a link in my switch but I am stumped on ubuntu side. I think I have to make a file with entries but not sure where or how.

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Ubuntu Networking :: PCI WiFi Cards Work With 11.04?

Jun 9, 2011

I'm looking for a cheap and stable wifi card that will work with Ubuntu 11.04. My Linksys WMP300N is creating a conflict with the native Broadcom driver (causing the system to freeze after light network traffic) and ndiswrappper isn't working for 64 bit Ubuntu.

Does anyone own a relatively cheap (less than $40USD) PCI card that works flawlessly, or close to flawlessly with 64bit Ubuntu 11.04? I need to get off of this 35ft ethernet cord. Cat5 + crossing top of stairs = problem in the future.

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Networking :: Detects GSM/GPRS/UMTS Cards?

May 22, 2009

I'm developing an application to monitorize the network interfaces plugged in my PC. I know that wireless interfaces are listed in /proc/net/dev, but I don't know how to identify a cellular NIC.Is there any virtual file in /proc that shows the cellular NICs in the system? Could I identify different cellular NICs looking at /dev/tty?

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Networking :: Set 2 Network Cards In Bridge Mode?

Apr 7, 2010

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.

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Networking :: Slackware Can't Recognize Network Cards

Mar 29, 2011

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.

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Fedora Networking :: Both Cards Are Enabled And Set To Connect Automatically?

Nov 15, 2010

I just installed Fedora 13 on my desktop computer and ran into the same problems I did when I tried to install which was i could connect to a network but couldn't access the internet. I decided to install Fedora 14 since I already installed it on my laptop. I'm still running into the same issue, I can connect to my network but cannot connect to the internet using my PCI NIC or onboard NIC. Networking is enabled and I'm getting a IP address from my router. I ran "lspci" and it shows me both network cards which, please correct me if I'm wrong, makes me think that the drivers are installed.

I'm also curious if the VNC client/server could be used through a WAN. I would like to remote into my computer at home when I'm not there and see the gui. I had SSH installed at one point but it was just text. If there is better program please let me know. why I would have Services on my laptop but not on my desktop? Both computers are running the same version. Both cards are enabled and set to connect automatically. I can get a IP with both NICs. I only have one plugged in at a time.

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Ubuntu Networking :: Chipset In HQRP 11N PCI Mini Cards?

Feb 8, 2010

Does anyone know what chipset is used in the HQRP 802.11n PCI mini cards (not express)?

[URL]

I'm looking for a 2 antenna card that does 11N for an older Dell laptop that use mini pci. This is the only one I found, but the chipset is a mystery, and I need to know it before buying it.

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Ubuntu Networking :: Any Newer Supported USB Wireless Cards?

May 2, 2010

Had a hard drive fail this week, and I am going to order a new one. I am using $150 dollars in Best Buy gift certificates. Well seeing as how I have some left over I would like to get a usb wireless adapter that would work out of the box (preferably usb although I could always get an internal). All Best Buy has are wireless N cards and I was wondering if anyone knows if any Wireless N USB cards work out of the box without downloading firmware or NDISwrapper.

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Ubuntu Networking :: Warning Re Realtek Wireless Cards & WEP

Jun 13, 2010

I recently purchased two MSI Windtop AE2220's. One for my home which uses a router with WPA2 protection and one for my office where I use WEP encryption.

The Realtek internal wireless card will not connect to a WEP router if you are running Ubuntu Lucid Lynx 10.04. I have exhausted all suggestions on this site and all drivers found at Realtek's site.

I have been using Ubuntu since Hardy Heron, but sadly, painfully, I have had to install Windows 7 on my office machine until I find a wireless card compatible with the MSI Windtop AE2220, Lucid and WEP.

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Ubuntu Networking :: What's Relationship Between Ethx And Physical Net Cards

Apr 8, 2011

Do you know what's relationship between ethx and physical net cards? such as i have three net cards in the PC, named A, B, C. In which config file i could know that eth0 -> A, eth1 -> B, and eth2 -> C. Would the mapping relationship change after reboot? Is there any method i could change the mapping?

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Ubuntu Networking :: Increase Tx Power Of My Wireless Cards?

Jul 29, 2011

I have a wlan0 which is Atheros AR928X and wlan1 which is Alfa AWUS036H

I thought I could set iwconfig wlan0 txpower [higher than 20] but any value more than 20 results in:

Error for wireless request "Set Tx Power" (8B26) :
SET failed on device wlan0 ; Invalid argument.

I get the same error for wlan1 when trying a value higher than 27.

Is there a way of increasing the TX power and if not then why not?

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Networking :: Adding Two Interface Cards To Bridge - No Connectivity

Mar 1, 2011

I 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.

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