CentOS 5 Networking :: No Internet Connection In Text-based Environment

Jul 5, 2011

I installed CentOS 5.6 (kernel: 2.6.18-238.12.1.el5) with X Window on my HP Compaq 6710b. I also downloaded the firmware iwl3945 for my Intel Pro Wireless 3945 and manually installed it, reloaded the iwl3945 module and enabled NetworkManager. I could then get the wireless network connection worked on my graphical environment. I installed additional software manually by using the terminal window (Applications --> Accessories --> Terminal) and everything worked perfectly.

However, when I switched to text-based environment by issuing the commend "sudo init 3" (changing the user level) and logging in as root, I could not get any internet connection. I tried to use lynx and I got the error message: "Unable to connect to remote host". I am a complete newbie in Linux and I tried to google and search for solution within centos.org but I could not find.

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CentOS 5 Networking :: Create PPPOE Connection On Text Based CentOS?

Jan 1, 2010

How can i add a PPPOE connection witch connect automatically on system start up in text mode in centos 5.4

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Aug 11, 2011

I have a question regarding to the Graphical Splash Screen. Is their a way to show the text based startup on booting your OS? So. I don't the OpenSuse Background with the loading line. But i want the half transparent black background if possible or just the black background with all the loading texts. The black and white screen.

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Nov 12, 2010

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Jan 22, 2011

I have installed Centos 5 on my laptop.And I have installed Oracle databases and also VMWARE server 2 software on it.But I see no page opens in firefox browser on this laptop.I can't understand why.The laptop doesn't have internet connection. But the VMWare web access page where we can login to console and create virtual machines doesn't require internet access.I am a newbie to linux and also network issues.How to figure out what is the problem? Are there any step by step guide to investigate this issue?All the pages I open get stuck with "waiting for abc.com" etc.It never opens.Javascript is enabled for this browser.

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CentOS 5 Networking :: Network Configured But No Internet Connection

Apr 8, 2011

I have installed centos 5.5 / 64. Configured network but - no internet. On my router I see my pc and IP. On centos, Firewall and selinux are disabled. I try to disable network and activate network manager and reverse but no luck internet is not working. Try to ping my router 192.168.5.1

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Jun 9, 2011

I am fairly new on CentOS and am in the process of setting up a small home office network that shares Internet access through the Linux (CentOS) box.I have two network interface cards The Linux box is also the DHCP server. My challenge is to get the client machines to access the Internet! I have a PPP connection to the ISP. Essentially I followed these Instructions CENTOS REDHAT Internet Connection Sharing. Pretty straight forward but I am still not able to get clients to access the Internet. I defined the DNS server through DHCP (196.44.x.y). I assumed it has to do with default gateway and it is set as follows: on the Linx box the gateway is my ppp0 link. DHCP uses eth1 (LAN card) fixed IP as the gateway. All clients are reflecting this information. The firewall (iptables) is reflecting the FORWARDING and POSTROUTING rules as advised.

Is there a step I mioght have missed to get this working? I tried to Google but its not getting me far.

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CentOS 5 Networking :: Internet Connection Sharing Domain Name Resolution Not Working

Jan 4, 2011

I am setting up a Beowulf Cluster using CentOS 5.5. I have the head node with two NIC devices eth0 and eth1. eth0 is the one that is connected to the WAN while eth1 provides the internal LAN connection. I am trying to configure internet connection sharing with the slave nodes on the network so that I can update/install software as needed via ssh sessions using yum. I have set up the master node with the requisite changes to iptables to enable IPv4 forwarding. From my slave nodes I can ping ip address from the terminal, but my domain name resolution is not working. i.e. if I ping [URL] it can not resolve, but if I ping 74.125.224.50 (one of google's IP's) I can communicate with the machine without a problem. I also ran the configuration tool provided in the README section of the forum on the slave node and the master node. The links are:

[URL]

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Jan 28, 2010

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Networking :: Text-based SIP Sniffer?

Jan 28, 2010

I'd like to learn more about the VoIP protocol SIP. I read that Wireshark can be configured to filter stuff so that only SIP packets are shown, but the SIP server runs on a server with no GUI. Does someone know of a text-based packet sniffer that supports SIP?

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Jan 9, 2011

I am running Ubuntu 10.10, and I would like to use my computer to share the internet connection from an ethernet port. For example, I would like to set up my computer as a wireless access point so I can create a network that other computers can connect to for internet.

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Jul 11, 2011

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Networking :: Shaping Traffic Based On Connection?

Sep 24, 2010

I want to explicitly commit bandwidth to only 3 VOIP connections, where a connection is defined as a source IP address, destination IP address, and a traffic class. I would like the traffic controller to put the first 3 VOIP connections into 3 different queues that would have equal priorities that are higher than Best Effort. If a 4th VOIP connection were to start, its packets would be put into the Best Effort queue. When one of the VOIP connections ends, I would like the incoming packets of a VOIP connection that is in the Best Effort queue (assuming there is one) to now start going into the free VOIP queue. Is it possible to do this? Can traffic control keep track of connections being created and deleted like that? If so, how is it done? I would like to avoid having to be constantly updating my filters whenever a connection starts/ends. In actuality, I would want to do this for several different classes.

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Jul 20, 2011

I am unable to make my VPN connection to my university work correctly. Before, it would work some of the time without changing any settings. Now it never works. Unfortunately my institution does not provide support to linux users (outrageous!) so I'm on my own. Here is a link to the configuration instructions for windows and mac users, I've tried to configure mine based on this information but I have not been able to do it.

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Apr 20, 2010

Is there any way to setup the Centos Directory Server without an internet connection?? i tried using the command: yum install centos-ds

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Jan 24, 2010

Its a case of ".... wireless network connection active but still not internet connection .."I am using WEP - 128 key ... Works when I connect directly using ethernet cable ... but not wireless (pci and wireless router)

ubuadmin@ubucomputer:~$ ifconfig

wlan0 Link encap:Ethernet HWaddr 00:06:25:12:83:3b
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::206:25ff:fe12:833b/64 Scope:Link[code].....

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Jun 21, 2009

I have installed Fedora 11 recently. I want to share my Internet connection.

I have e LAN connection eth0 which is connected to internet.

I have a Wireless connection wlan0.

I want to share my internet connection with wireless connection.

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Feb 4, 2010

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Jan 30, 2010

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Oct 21, 2010

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Jan 22, 2010

I have 2 text files : file1.txt and file2.txt

cat file1.txt

15 this is a sentence containing various words and spaces
34 this is a another sentence containing various words and spaces

cat file2.txt

2 this is sentence1file2
6 this is sentence2file2
54 this is sentence3file2

I would like to join these 2 files. The result should look as follows :

cat joinedfile.txt

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6 this is sentence2file2
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34 this is a another sentence containing various words and spaces
54 this is sentence3file2

==> so the joined file must be sorted on the first number. Any ideas how this can be achieved ?

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CentOS 5 :: Cannot Get Connection To The Internet (wifi)

Nov 27, 2009

I just have moved from winXP to CentOS and i have found one problem. i can not get connection to the Internet

KDE "System -> Network Device Control" select "wlan0" push "Activate" and receive
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Invalid argument.
Error for wireless request "Set Encode" (8B2A) :

[Code]....

also i did #service NetworkManager start

it is runing but i can not get connection

the network card is Intel PRO/Wireless 3945ABG Network Connection

In addition, how can i see a list of available wireless networks

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Sep 22, 2011

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Jun 6, 2010

I have installed Centos 5.5 on my PC and now since I am new to Linux environment I do not know how to set up Internet connection for it. I have laptop which runs on Windows and I access internet by typing in username and password for Wireless Internet (LAN cable from laptop to adapter and from adapter another cable to antenna which is outside.

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Jul 26, 2009

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Jul 26, 2011

Can I install webmin 1.550 on centos 5.6 without internet connection? should I install perl ssh net first?

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Jan 28, 2009

I have a text file called file1.txt containing many lines eg.

line1
line2
line3
line4
line5
line6

Then i have another text file called file2.txt contains

3
5
6

Is there a command to remove the lines in file1.txt based on the keywords in file2.txt? note: It should remove line3,line5,line6 based on 3,5,6

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Mar 19, 2011

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[Code]...

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CentOS 5 Networking :: TIme Based Ethernet Interface Disable And Enable?

Mar 14, 2011

Im new to this Cent OS as well as Unix based Operating Systems. Please help me with the below requirement.My Company is a Serach based data collector from different websites like Google, Yahoo & many more..Collecting the data from the search engines is a issue for right now.. As many search engines are blocking us to search and retrive the date after some time.. Taking Google as example : Google Blocks my IP after every 30 mins of retriving.. Application is a Windows based & using Windows 2003 as the Server.. Would like to give a Dynamic IP to the Windows Server via 1st Ethernet Card & enable the 2nd Ethernet for the Internet..Eg : eth 0 = 192.168.1.1eth 1 = x.x.x.x (Public IP)I have check with few of my friends who told me to get Linux or Cent OS installed to do a interface disable after given time & enable a secondary device or virtual interface the next couple of seconds... Like eg : eth 1 = x.x.x.1 eth 2 = x.x.x.2 eth 3 = x.x.x.3 so on.. Would like the eth 1 to be down after 60 mins & eth 2 o be up & again after 60 mins of up time eth 2 down & eth 3 up.

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