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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Ubuntu Networking :: Can Ping But No Internet Access

Jan 5, 2010

I have a Compaq Presario R3000 with Ubuntu 9.10 32 bit that I just installed last night. I'm using a Zyxel G-102 Wireless card and Actiontec GT701WG wireless modem.

When I try to connect to the 'net, the network does show up and it connects strong (100%). It also shows multiple neighbors networks. It pings at 99% success (with over 900 sent as I write this) but when I open Firefox it can't connect, it just times out. I've used WEP security and have switched off security as well. I tried hooking up to the modem via USB and get the same result. It acts like a Firewall issue but there isn't one installed - at least that I can find and the Firewall in the modem is off. I ran FF in root with gksu firefox as suggested in another thread. I tried www.ubuntu.com and the header loaded but that was all. Then it timed out.

I'm new to Linux but have used Puppy Linux with this machine and card, etc. so I know it can/does work with Linux. I wanted a more refined distro and chose Ubuntu.

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CentOS 5 Networking :: Internet Working But Can't Ping?

Sep 10, 2009

My server was working perfectly.

My other uses on on LAN can access Internet but Cant ping the server.

Though they were able to do that earlier.

No software installed. No change in any files.

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Ubuntu Networking :: Install NIC Wired RC-400 - Error Comes Out - Unable To Access The Internet Or Ping Any IP Address?

May 5, 2010

we are trying to install this NIC Rosewill RC-400 Chipset RTL8169S-32 in Ubuntu 9.04 we downloaded the drivers from Rosewill website (For kernel 2.4.x and 2.6.x V 3.1) but when we follow the instruction in the readme file and do make clean modules and error comes out

Code:
make -C src/ clean
make[1]: Entering directory `/home/trinity/Desktop/r8169-6.006.00/src'
rm -rf *.o *.ko *~ core* .dep* .*.d .*.cmd *.mod.c *.a *.s .*.flags .tmp_versions Module.symvers Modules.symvers rset[code]...

So I went do realteak downloaded latest available drivers that seems to be were release yesterday did same command and same error So I made only make and it went fine did then make clean modules and went fine so made make install, depmod -a and modprobe r8169 verify int was up and getting correct ip from router but I'm not able to access the internet or ping any IP address

Code:
xxx@xxx-desktop:~$ uname -a
Linux xxx-desktop 2.6.28-18-generic #60-Ubuntu SMP Fri Mar 12 04:40:52 UTC 2010 i686 GNU/Linux
xxx@xxx-desktop:~$

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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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Fedora :: Cannot Ping Either Of F12 Laptops / But Can Access Internet From Them

Feb 18, 2010

Firewall disabled.Static IP addys given to each laptop, but makes no diff when dhcp derived IP addys.using wlan Cannot ping either laptop from a windows box, bit windows box pings other computers.Can access internet from either laptop and Samba works too.I can ping one laptop if I plug the LAN wire into it. In fact I can ping either the wlan IP addy or the LAN addy this way. WHen I remove the Lan wire I can still ping the wlan on the laptop, but restarting screws it all up again.I see that iptables and other files change when I plug the LAN cvable in and then remove it again.

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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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General :: Serevr Blocks Ping And All Access From Internet

Mar 17, 2010

I have a Centos 5 server working as firewall, dns, proxy (squid) and mail server with postfix. sometimes it blocks ping from the net and when it hapen I cant browse my site not even fetch my email through webmail from outside. But inside every thing still go well even browsing the internet, but no ping to the net (e.g pop.gmail.com). when I restart it everything come up and work fine.

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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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Debian :: No Internet Access \ Ping Always Respond With Network Is Unreachable?

Jan 29, 2011

I'm using debian lenny.When I boot with kernel 2.6.36, ping always respond with Network is Unreachable. But when I boot with kernel 2.6.26 it works. I can't even ping the dafault router of 2.6.26 kernel when I am at 2.6.36. Also, system/administration/network does not show any connections while it shows something at the other kernel.

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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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Networking :: Cannot Ping With Command - Ping IP - Address But Can Ping With - Ping IP -I Eth0

Jul 15, 2011

I am using an virtual machine. where I need to ping from one machine to another. earlier I was able to ping. But after going to google.com once, I cannot ping back to this machine.

But if I gave ping -I eth1 <IP> then I can ping.

I cannot install any package, so tell me solution which includes not installing any package.

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Fedora Networking :: VM Can Ping Host And Internet But Host Can't Ping VM

Jan 19, 2010

Host - Fedora 12 64bit
KVM
VM - Windows Server 2008 64 bit
bridge-utils

VM can ping host and Internet but host can't ping VM.

I set VM static IP 192.168.0.205.

It turns out dynamic IP - 192.168.0.55

On host:

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Networking :: Unable To Ping To Internet?

Mar 24, 2010

My Internet Router is on 64.1.1.1

I have 2 NICs in my Linux Box: (Firewall OFF)

Eth0 -> 64.1.1.2 and cross-cable connected to Internet Router (64.1.1.1)
Eth1 -> 192.168.1.1 Connected to switch hub

Default gateway of Eth0 is to Internet Router (64.1.1.1)

From Linux-Box.. I able to ping to internet(ie. ping 202.158.3.7)

Client PC: (Firewall OFF)
Default Gateway is 192.168.1.1

I am unable to ping to internet (ie. ping 202.158.3.7)

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Fedora Networking :: Can't Browse Internet But Cant Ping On F10

Jun 19, 2009

I'm using FC10 on my box at work. It is behind an anthenticated proxy for internet connection. In Gnome, I configured the Network Proxy through the GUI, as my browsers too.

So I can browse internet pages, install packages thru Add/Remove Software GUI, but I cant do it in the command line, using yum install, for example. Then trying to figure it out, I saw that it cant reach the package mirrors. It isnt a DNS problem, I set the /etc/resolv.conf correctly, as the host command works correclty. I can ping the local pcs on the network too. Firewall is disabled. Below some simple tests:

[rtovo@davinci ~]$ ping mirrors.fedoraproject.org
connect: Network is unreachable
[rtovo@davinci ~]$ host mirrors.fedoraproject.org
mirrors.fedoraproject.org is an alias for wildcard.fedoraproject.org.

[Code].....

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Ubuntu Networking :: Ping Working But Still No Internet

Jan 1, 2010

I can ping my router, i can ping google and i can ping the ip address you get in the ubuntu help.If i type 192.168.1.1 i can get my router control panel/i just cant connect to the web,

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Ubuntu Networking :: Ping No Internet After Upgrade

Aug 28, 2010

I've just upgraded from Ubuntu 8.4 to 10.4 and suddenly no internet access, but I'm able to ping as above. I've been using Ubuntu for about a year now but don't know it all that well "under the hood" so don't know where to start looking for a solution.

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Ubuntu Networking :: Can't Access / Ping A Site

Mar 23, 2010

Trying to access 67.15.245.6 (its a forum site). I can't get to it from home for over a month now. I can't ping it, but I can ping obvious things like google. Tracert isn't working at all. Once it hits the lightspeed.frokca.sbcglobal.net hop it just dies like ATT isn't allowing traceroutes. I've been using Tor as a work around. About 3 months ago I basically had the same issue with openbittorrent.com's site.

I have a linux server and windows XP box. I can't ping the above IP nor tracepath/traceroute to the IP from my linux box.

I have ATT uverse.

EDIT: The site is hometheaterlounge.com (The IP won't do you much and its just the IP of the site host).

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Ubuntu Networking :: Connected To Internet But Can't Ping Systems On LAN?

Oct 5, 2010

I've got Ubuntu 10.04 on my laptop and have recently (within the last 72 hours) started having trouble connecting to other machines on my local network. I'm unable to ping both my router and a server set up in the room beside me.

1. I have tried pinging my server and router from other machines and it works fine. Accessing the server via HTTP works from all machines except for my laptop.

2. I am, however, connected to my router via wireless and can access the internet. Also, if I connect via an ethernet cable I am able to ping both my server and router, although I'd love to be able to go wireless.

3. I assume something's wrong with my wireless setup, but I really can't figure out what. Possibly related note: my wireless has been disconnecting unpredictably on my home network (WPA).

Let me know if you'd like to see any command output and I'll get it to you asap! I've got a Dell Studio 1558 w/ the dreaded Broadcom BCM4312 wireless controller.

Code:
user@blue-skies:~$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

[Code]......

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Networking :: IPTables - Cannot Ping Or Access Internal Server

Mar 31, 2010

Basically, I have a windows 2003 server virtual machine (vmware) inside Ubuntu 9.10.

The Ubuntu machine has IFconfig:
Code: sam@sam-laptop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:15:c5:b8:c8:8b
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:17

Why can't I ping or simply access the internal server on my ubuntu machine from a another computer on the 192.168.1.0 (slash)25 physical network? Do I need a bridge? Iptables?

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Networking :: Ping To A Website But Can't Access It Graphically Using Webbrowser?

Jul 2, 2010

i can ping to 192.168.10.104 but can't access it graphically.i am using firefox.. distro is ubuntu.. i do //192.168.10.104:9345..but it takes no response.can u help me.. i am using direct connection..

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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 :: Unable Get Internet Connection / Ping Router

Jun 7, 2010

when I was still at my university room where the connection would work after a few reboots. After moving back home the connection worked on and off for a day before not working at all. NetworkManager is telling me that I am connected and have an ip address, etc, but nothing is able to get an internet connection. I am able to ping myself but am not able to ping my router. Everything works fine on M$ and other PC's on the network, it's just my ubuntu 10.04 that is playing up.

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Ubuntu Networking :: Wireless Router Connected - Can Ping But No Internet

Mar 1, 2011

This morning my Ubuntu 10.10 Meerkat desktop suddenly lost internet connection, but stayed connected to my netgear router. After the usual "tried turning it off and on again" methods didn't work, I booted into my Win Vista partition to find that connected no problem. I have another Ubuntu netbook and a Windows 7 laptop in the house as well as an Android. These all connect fine. It appears to be just the desktop Ubuntu.

I can ping my router 192.168.0.1 and log into it's UI via browser. I can also ssh to the box. My router does not do any filtering or blocking. I've tried disabling the firewall and changing the nameservers in /etc/network/interfaces and dhclient.conf as well as the network manager. The network card is a Belkin 54g but I can't remember the exact model no. it was bought years ago.

Code:
$ping www.google.com
PING www.l.google.com (74.125.230.115) 56(84) bytes of data.
^C
--- www.l.google.com ping statistics ---
30 packets transmitted, 0 received, 100% packet loss, time 29004ms

Code:
$traceroute 74.125.45.100
traceroute to 74.125.45.100 (74.125.45.100), 30 hops max, 60 byte packets
1 * * *
...continues to...
30 * * *

When I do a restart of the networking service it spits out the error:
Code:
Ignoring unknown interface wlan0=wlan0
However, as I said the wireless itself works.
/etc/network/interfaces:

Code:
auto lo
iface lo inet loopback
iwconfig:

Code:
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:"haters gonna hate" .....

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Ubuntu Networking :: Internet Dataflow Over Wireless - Get 1 Or 2 Ping Packets

Jun 4, 2011

I'm running Lucid (10.04), dualboot vista, but I'm having some issues with my wireless USB dongle. Previously (in a different) location, the network wasn't showing in my wireless network tab, and that was never resolved. But now I'm in a new place, and what I'm finding is that my network is showing up in the networks tab, and I can select it, enter the PSK, and it starts to interrogate, but never seems to manage all the way through to getting internet.

Im not sure whether the machine is able to connect to the network, but not the wider internet, or what. The only indication I'm getting is that its connecting for a length of time, then gives up. I have managed to get the update tool pop up - so I'm not sure if thats an indicator of some internet connection or not (presumably it only generates the list of packages to update when it can connect to the net and see what updates are required...) I believe its also managed to get 1 or 2 ping packets through to the internet. I'm driving a belkin N-wireless USB adapter, N10117.

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Networking :: Linux Router / Config Should Be Done On The Box So That IPs Inside The LAN Can Be Ping From The Internet?

Mar 4, 2010

I am using centos box as a router. WAN side has a public ip and lan side also using a public ip. I configured dhcp server on the LAN side and it is working perfectly, pcs on the LAN side can able to access the internet.

Problem: Considering the fact that LAN IPs is using Public IP and it is presumed that from the internet it can be able to ping IPs inside the LAN but, alas, it couldn't.

No firewall has been config!

Question: What config should be done on the box so that IPs inside the LAN can be ping from the internet?

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Networking :: Cannot Ping Gateway Or Access Router Administrator Page

Jan 22, 2009

Presently this client access the net through following setup
ADSL modem -> hub -> all computers

Now they want to do some kind of bandwidth control, content filtering. So I tried setting up squid with dansguardian. This is what I did
ADSL -> linux server -> all computers.

The linux server has two NIC cards. One to the ADSL router and another to the local hub. This is how my squid.conf file looks like

http_port 3128
acl ubc src 192.168.1.0/255.255.255.0 (for subnet)
http_access allow ubc

Have set the gateway server as 121.x.x.1. Which is the gateway server of the ISP. Now I can ping the local network, but cant ping the gateway or any other website. Also I am unable to access the router administration page.

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