Networking :: CentOS 5.5 - No Access To Internet

Oct 17, 2010

I have CentOS5.5, it has full access to internet until I did something to it I couldn't figure out. This is not a cable issue since I could ping and ssh to other machines within my lan. Apache is also running fine, which is probably irrelevant. When I type traceroute cnn, it simply hangs, later saying [URL]:
Temporary failure in name resolution
Cannot handle "host" cmdline arg '[URL]' on position 1 (argc 1)
This is a desktop version of CentOS5.5, when i do Administration - Network, it says eth0 is active and Primary and Secondary DNS are set correctly to my comcast DNS server at 68.94.15x.1

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CentOS 5 Networking :: Internet Access Slow In CentOS 5.3?

Sep 9, 2009

I have an MSI K9A2 Platinum mobo, which has a 10/100/1000 Fast Ethernet Realtek 8111B built-in, a D-Link DIR-655 Router and a DSL modem. Compared to Windows Visya and other Linux distros ( Fedora 11, Suse 11.1, Mandriva 2009.1 ) access to the internet is much slower. It seems there is a noticeable delay when running CentOS 5.3. before internet access kicks in each time I am surfing the web or updating my system.

Is there any way I can speed things up, or determine why CentOS 5.3 seems much slower ?

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CentOS 5 Networking :: Can't Ping Or Otherwise Access Internet

Mar 14, 2009

I just downloaded and installed the latest Cent OS 5. I disabled SE linux, turned off the firewall, and selected the Server package options when installing. I plan on using this as a router/firewall between my internal network and the internet, as well as web server, etc. The first thing I did was to configure the two NICs, internal one with 192.168.7.1 address and the other with an address from my ISP (I have a static address, but I also tried to let the DSL router assign an address via DHCP). Everything looked fine, I checked /etc/resolv.conf and my routes. I was able to ping the DSL router from the server, but I was not able to do a ping or lookup on anything outside my network. I tried host, dig, nslookup, etc, no luck. Obviously then, I was not able to browse the net with firefox.

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CentOS 5 Networking :: Unable To Access Internet?

Jul 4, 2010

On my Centos 5 box my internet won't work. I am unable to get update and I can't download any native programs. But I have Samba running and I am able to access all my files for my other computers.

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CentOS 5 Networking :: Can't Access Any Port From The Internet

Nov 28, 2010

1. I've just installed Centos 5.5 on a dell machine with 2 network interfaces, and have disabled SELinux.

The output for the command sestatus is: SELinux status: disabled

2. Am I right to think that iptables is not a concern since SELinux is disabled? In any case, the output for the command "iptables -L" is:

Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:domain

[Code]....

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CentOS 5 Networking :: Unable To Get Internet Access To 5 Server

Jan 17, 2009

I've installed centos 5 on an old computer with success and it works great.I can access the web server hosted on the centos server from any computer on the wireless and wired local network. I can also use ssh (putty) and nx client from any computer on the local network (wired and wireless) to access the centos server.On the wireless router I've configured a port forwarding to the wireless network interface on the centos server. I can access the centos server from the outside (internet) through this port forwarding both through http and ssh or nx client.MY problem is that I can't access the centos server from the internet through the wired network interface. Any attempt to view a web page or login with ssh or the nx client will timeout.

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CentOS 5 Networking :: DomU Virbr0 Can't Access Internet?

Feb 1, 2009

I'm running a CentOS 5.2 on dom0 and two CentOS 5.2 on domU.The domU use virbr0.I install domU via GUI interface and did not change anything ... the domUcan ping and connect to dom0 but can't access to Internet !!I search google and find someone mentioned that I need to enable IP forwardin dom0 ... I did but my domU still can't access to Internet.What else I need to do ?The routing table of dom0 is:

# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

[code]....

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CentOS 5 Networking :: Wifi Client To Access Internet Via Laptop?

Jul 27, 2010

I have a Centos5.4 64bit laptop, having an eth0 and a wlan0. I connect this wired eth0 to a wall socket to access Internet via DHCP (eg the assigned address is like 192.168.192.xx). I do not have access to the ADSL router. How can I turn this laptop into a Wifi access point to allow, say my Ipad or any wireless-only client, to access the Internet thru this laptop ?

That is, communication between iPad to laptop is wifi(ad-hoc connection ??), laptop to the ADSL router is wired LAN. The laptop need to have some bridging build in ? If you can refer me some concepts, then I can follow up from there.

Or better yet, has anybody does this before ?

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CentOS 5 :: Installing CentOS-DS - Cannot Get To The Extras Repo Due To Lack Of Wired Sans Internet Access

Dec 9, 2009

I am trying to install CentOS-DS on version 5.4 x86_64. I cannot get to the Extras repo due to lack of wired Internet access. I have wireless (except to server) and I have big UFD drives.

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Ubuntu Networking :: The Phone Can Access The Internet Through The Computer Unable To Get Access To Https Sites, Like Webmails

Dec 31, 2010

I managed to configure my W890i phone to get access to internet through an ubuntu-based computer. It's very easy to use the phone to give internet access to the computer, but the opposite is quite more tricky. For that I've done the following

----On the phone---

-Set the USB network option to "through computer", so that the phone uses the computer's internet connection and not the opposite.

-Decide and set "Shared Network" parameters: user, pasword and workgroup.

-In "conectivity-> internet connection" set "allow local network" to "yes"

----On Ubuntu 10.04---

-Install samba, samba-client, smbfs, smbclient, firestarter and dhcp3-server

-Configure Samba (System-> Administration-> Shared folders): same workgroup as in the phone, add new user (the phone), passwd this new user. In my case the user was called "w890i" and the password given was the same.

-Once the phone is connected to the computer through USB (then select "phone mode"), a new connection appears in NetworkManager: usb0.The aim is to create a shared network that gives internet access to this device. Edit the IPv4 parameters of this new connection, set them to Manual and give an IP adress (192.168.0.1) and a subnet mask (255.255.255.0); the rest of the fields are left empty.Connect this network.

-Set firestarter to use dhcp3: sudo ln -sf /etc/init.d/dhcp3-server /etc/init.d/dhcpd

-Launch firestarter and follow the wizard. Set "allow internet shared connection", choose the device for the primary internet access, and then the device for the shared network (usb0). Then change the settings for firestarter: activate DHCP for local network, set IP to the one we gave before (192.168.0.1).

-Open dhcp3-server config file sudo gedit /etc/default/dhcp3-server And set INTERFACES="usb0"

-Set the policies of firestarter: in incoming connections, allow connections from the IP adress given to the phone (192.168.0.1). Then add rules for the ports that need to be open for this connection. I opened HTTP, HTTPS, SMB, SMTP, POP3, IMAP, IMAPS, DHCP for all the connections in the local network.

-Apply policies and start the firewall.

------------

After all this, the phone can access the internet through the computer. Two problems appeared:

1. I couldn't get access to https sites, like webmails. The phone gave a "communication error". But then I tried with Opera instead of the browser built in the phone's firmware, and I could finally get to https sites.

2. I couldn't retrieve mail, neither POP nor IMAP nor IMAPS. I thought it was a firmware problem again, and I tried out several mobile phone email clients written in java, but none of them worked.

So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection

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Ubuntu Networking :: Couldn't Access Internet Via LAN With Could Access With Windows 7?

Jul 6, 2011

I connected my laptop running with Ubuntu 11 in the LAN but I couldn't access internet.But I could ping to the other computers connected in the LAN. I tried the same thing with windows 7 in the same laptop and I could access internet.

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CentOS 5 :: Yum With Host Without Internet Access?

Oct 15, 2009

is it possible to use yum in any way when a computer is not connected to the internet(but when full install media is available; for example the dvd)? Or should I resolve all dependencies manually using rpm?

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May 20, 2011

I am using a CentOS 5.4 server for Snort (it's actually using the easyIDS config). I'm trying to modify some things, and I've noticed that I can't seem to download any files. WGET, FTP, etc... all just time out. It's not a network firewall issue, as I've been monitoring the logs and see no blocked traffic, and other machines on the subnet can get outside with no problems. I checked the Cent firewall using the setup command, and it says it is disabled as well. I'm very new to linux, so I'm wondering how I can troubleshoot this? The wget and ftp errors just say the connection timed out, but I'm not sure why.

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Apr 3, 2011

i am unable to access internet in linux editions (redhat 5.4 & centos 5.5) recently i have taken a reliance internet connection but the think is i didn't get any ipaddress from reliance, but i accessing internet in window 7 and i have triple boot. pls any one give the solution.

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CentOS 5 Server :: Allow Apache To Access The Internet?

Apr 21, 2009

We have Apache installed on CentOS 5.3 in our laboratory. Indeed the server is running fine for almost two years since it is actually the first CentOS 5 that was released just regularly updated. Now, most of our applications are custom made PHP applications and until now we somehow managed to avoid using PHP to fetch files that are on the internet itself. But now we are desperate because we need to allow PHP to fetch files through Apache but it seems as if Apache is not allowed to make a connection to the outer world. Additionally we use a proxy server to connect to the outer world so right at the beginning http_proxy is used to set that environmental variable. And for the root user it all works fine after that but it seems as if the apache user is not allowed to access the internet. Just to make a remark our web server can be accessed from the outer world so its a one way street for now.

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CentOS 5 :: Adding An Application Without Internet Access?

Jan 27, 2010

I am using CentOS LiveCD i386 without internet access. I would like to make the application sys_basher, but make is not installed and I cannot find how to add packages without yum.

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CentOS 5 Hardware :: How To Access To Server Over Internet To Bio

Feb 15, 2010

i want to buy a pci weasel, people told me i will have access to the server over internet with this board.Does anyone have any experience with this kind of card?How can i have access to server over internet to the bios,etc.

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CentOS 5 Server :: SSH Access Denied Over Internet?

May 28, 2010

I am getting an access denied when trying to log in via SSH to my home server with putty(windows) over the internet. I can use any user including root and get the same result. If I use my Android phone with the ssh terminal command I am able to successfully log in and use the server.

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CentOS 5 :: Installing Applications With No Internet Access?

Mar 17, 2011

I'm currently working on a project in a secure environment with no internet access and I need to install Ettercap and Wireshark on the machines. I thought this would be a simple task of loading Wireshark onto a USB but this did not work and replied with error messages such as: ' Invalid config x86_64-unknown-linux'

what does the error message mean and do I need internet access to install the apps?

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CentOS 5 :: Can't Access Internet From Windows XP Clients / Enable This?

Jan 3, 2011

I am stepping into Linux world ...and I have chosen CentOS.
I have installed CentOS 5.5 on a dedicated IBM server successfully. My server has two network cards. I have configured eth0 for lease line internet connection with a live IP (113.xxx.xxx.xxx) and eth1 for local LAN with a static IP (192.168.0.1).

Now,
1. DHCP is working fine and I can access the server from my Windows XP clients.
2. I can access the server with SSH client PuTTY from home ( with the live IP ) and from the local LAN (with static IP 192.168.0.1)
3. I can access my shared server directory 'public' from my XP clients
4. Internet is working on sever and I have updated the server with yum update.

But, I cannot access internet from my XP clients machines.

I read "The Definitive Guide to CentOS" and tweaked the config files in different ways but it did not help. now after two sleepless nights I am here as my last hope.

I admit, I am not aware of every linux terms and commands, but I am getting into it. code...

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May 29, 2009

I am working on a system with no internet access so I cant use yum. How do I install a feature like X-Windows or GNOME Desktop Environment(using groupinstall) directly from DVD?

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General :: PPPOE Server Access Internet Clients Fail To Access Internet

Aug 26, 2010

I have a linux box (fedora) with two ethernet cards eth1 and eth2. On eth1 I successfully configured a PPPOE internet connection. Such that from the server I can browse the internet. On eth2 I wired it to a wireless router essentially to provide the wireless cloud. On eth2 I also configured dhcp, such that the Linux box is both PPPOE and DHCP server.However my clients on the LAN cannot access the Internet.

On passing the routing command I get
Destination Gateway Iface
196.44.x.y 0.0.0.0 ppp0
192.168.1.0 0.0.0.0 eth2 (my subnet)
0.0.0.0 0.0.0.0 ppp0.

The router (functioning as a wireless access point mainly) has a fixed IP address of 192.168.1.2 and eth2 has IP address 192.168.1.1. The dhcp file running on Linux has been set with option router (Gateway) 192.168.1.1. I cannot figure out how to correctly set the routing table such that my clients on wireless can access the internet cloud. I googled and googled but no solid solution. Any suggestions?

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CentOS 5 Networking :: Internet Sites Not Working In FF Browser / CentOS

Jul 20, 2011

I installed CentOS. NetworkManager successfully installed and launched. I can ping any IP from terminal but I can't open any site in browser except 127.0.0.1 I can't open IP of the modem 192.168.1.1 in browser also.

The results of some commands:

ifconfig
eth0Link encap: EthernetHWaddr 7D:60:00:00:00:00
inet addr: 192.168.1.5Bcast: 192.168.1.255Mask:255.255.255.0
inet6 addr: fe80::7f60:ff:fe00:0/64Scope:Link

[Code]....

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Nov 29, 2009

I've just set up a webserver and forwarded ports 80, and 22, and I cannot access the inernet on that machine but I can connect via ssh and visit a page on the server when on a different network.When I put the router in dmz mode I can connect to the internet properly.

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Networking :: Help Getting Internet Access

Jan 14, 2011

I have an old Debian distro (2.6) and it is completely stripped down, containing only the very bare minimum in software packages in order to function.I would now like to get internet access on this computer and I have installed a network card and connected it to an ethernet port however I am not sure where to go from there (i have little linux experience when it comes to installing/removing hardware and software).

Would I be right in saying that I need to install some kind of network/internet package in order to gain internet access? If so where would I get this from? and if so is this package likely to interfere with other packages I have installed? preferably I would like to leave everything else as it is. Frankly it only just works in its current state and i don't want a network package updating other packages and ruining all the dependencies and making my life hell :P

To clarify: I do not currently have internet access on the computer in question so I cannot use those fangled console command that download and install packages automatically. I also do not have a Debian CD, nor am I interested in downloading the 30discs worth of Debian distro as this internet connection is super slow

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Networking :: No Internet Access

May 9, 2009

I'm having a problem with my wireless router and I don't understand the source of it. I have a DLink 604 router since couple of years and it work without any problem. It is attach to a cable modem. Recently I tried to connect a wireless router (DL 624) in the same setup. But it refuse to connect (etho) to the Internet even if Knemo tell that my computer is connect. I tried everything: disconnect the modem, the router, reboot, update my firmware, disable the wireless, disable DHCP...name it. So I thought my router was the problem, so I just purchase a new one (DIR-628) and guess...the same problem. And as soon I reconnect the DL-604 everything is fine. So there is something with wireless router that I don't understand. And I don't have to say that the Wireless connection doesn't work either. Any clue of what can be wrong. Bye the way I use Mepis 8.

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Networking :: Get Internet Access On Desktop Computer Through Networking?

Sep 10, 2010

I'm not really a newbee in Linux but I am a newbee in networking. I have both a Ubuntu laptop and a Gentoo desktop computer. I have just bought me the MBR1000 Cradlepoint router and it works great with my Verizon USB 760 modem plugged in it. I can now send and receive email on my Ubuntu laptop. I like it.My Gentoo desktop computer is just sitting there with no Internet access because my Verizon modem is no longer plugged into it but plugged into the router instead. Only my laptop now has Internet access. The laptop has an integrated wireless card built in the MB but my desktop has no such capability.

Is there a way (besides buying a wi-fi adapter) to get Internet access on my desktop computer through networking so that the router would give both computers Internet access at the same? My Gentoo desktop does have an ethernet adapter that perhaps I could useThe router has several LAN ports and one WAN port, both unused.

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CentOS 5 Networking :: CentOS In Vmware Always Losing Internet?

Apr 21, 2010

I installed CentOS on Vmware server 2.0.2

I took a snapshot of my machine with internet working

If I reboot my machine I lose internet. This makes no sense to me.

I ifconfig eth0 down then ifconfig eth0 up and still no internet

Weird thing

I check ifconfig and my bcast ID is 192.168.2.255 when it is supposed to be 192.168.45.255

(When the internet is working if I check ifconfig the bcast ID is 192.168.2.255)

IF I change my bcast my internet stops working

If I reboot my machine my internet stops working

I checked /etc/sysconfig/network-scripts/ifcfg-eth0 and I see that in my snapshot (where the internet is actually working) the bcast is at 192.168.2.255

Without rebooting if I edit that script and I put it to .45.255 my internet stops working

If I reboot my machine at any time my internet stops working

I have also just realized that I cannot ping my gateway..

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Feb 5, 2011

Could you pleaseme out.I have installed Virtual BOX on windows 7.Ubuntu i have installed on virtual box.Now i want to access internet from the Ubutu VM.

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May 16, 2011

I'm trying Ubuntu 10.04 but I can't figure out how to connect to the Internet. I've run lspci -k & sudo lshw -C. This is the result code...

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