Ubuntu Networking :: Can't Ping The Router Or Anywhere Else?
Jun 30, 2011
Connected freshly installed 10.04.2 to a wireless network through a router. Everything looks correct -- IP is assigned, connection is on, the system shows up on the router -- except that there is no internet connection and I can't ping the router or anywhere else. According to the router, the wireless signal at the ubuntu system is stronger than at the sitting-right-next-to-it windows system with *working* internet. what is this? Should I replace current driver?
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May 26, 2010
I have Mandriva One 2009.0 (192.168.1.100) on one box and Mandriva Free 2010.0 (192.168.1.118) on the other. I can ping router (192.168.1.1) from both of these boxes but I can't ping one box to the other and the other way around. What's going on?.
Do I have to change some settings in router?. Or is it firewall issue on those two machines?. Both of these boxes are connected by cable. Symbol of the router: TL-WR340G.
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Jun 9, 2010
I moved my server and network equipment, and now the wireless works but I cannot get my server online. I host a website, so this is kind of urgent.
I have a wireless router and can access the internet fine on my laptop. My server is wired & connected to the router. It sets up the networking properly.. ifconfig has an ip address, the default gateway is present. But I cannot ping google, or even the router. It says destination host unreachable.
So I go back to the laptop to check the router settings.. sometimes it likes to assign the server the wrong internal ip. But, I can't access the router settings either! The page (192.168.1.1) times out. Same with trying to ping the router. How can the laptop be online if it can't reach the router?
Oddly, ifconfig on my laptop reports an ip address starting with 99.233. It's always given me an internal address starting with 192.168. What's going on here? Is the router not allocating an internal ip? I use wicd to connect, if it's relevant.
We have a windows laptop that can only get a "local connection". Now it does sound like the router is forwarding directly to my laptop, instead of allocating internal ips.
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Feb 3, 2010
I am a new user of Ubuntu...I am trying to use if for a University project. I have installed Ubuntu under a nice new partition and install was smooth. I am using my Belkin F5D8055 v1 USB adapter to connect to my router. The router registers that the IP 192.168.0.3 has connected (thats the IP assigned to the adapter) however even when trying to ping the router (192.168.0.1), I get no response.
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May 20, 2010
Every three or four weeks my router and cable modem will appear to go down. Not only can I not access the internet or web, but I can't even access the router and modem's admin pages (192.168.2.1 and 192.168.100.1 respectively). However, I can successfully ping 192.168.2.1 (forgot to try pinging the modem ip).
Hard resetting both by unplugging them for about a minute or so and replugging them fixes the problem. This is what Roadrunner says to do any time connectivity is lost. This problem also used to occur on Windows as well, except that on Windows I could still browse to both the router and modem's admin websites and restart them remotely. On Ubuntu (both 9.10 and 10.04) I have to manually unplug them since I can't bring up the admin sites in a browser.
I'm not sure how to go about troubleshooting this issue, and why Linux seems to require a manual hard reset whereas it could be solved on Windows with a remote restart. I wouldn't have thought the OS would even have anything to do with that.
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Nov 23, 2010
I tried to get Ubuntu 10.10 up and running last night, almost worked, but wireless card isn't working. I have another machine in the house running ubuntu 10.4 and it works fine. I have searched around a bit in the forums and can't find anything, so I thought I would make my own post. The wireless card is an Intel PRO/Wireless 2200BG, which I think is part of core (i think i read that somewhere).
I think the problem might have something to do with the ip address (currently 192.168.0.100), i remember having issues in the past with that, but I could be wrong. when I run iwconfig i get
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Jan 2, 2011
I'm setting up a home network and trying to set up a Ubuntu Server (10.04) as a samba file server and a web server.I installed Ubuntu 10.04 Server and the automatic network configuration during installation failed. I've looked into host.conf, networks, interfaces, hosts and resolv.conf and either my settings are wrong or it's something else. I have a Win7 computer connected to same router and DSL modem and it works fine (edit: most of the time--- see below).
More information:
*ifconfig shows eth0 is broadcasting but without an IP address
*route shows an empty routing table
Code:
sudo route add default gw 192.168.1.254 doesn't work:
SIOCADDRT: No such process
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sudo /etc/init.d/networking restart doesn't work:
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Oct 2, 2009
just finished installing Centos5 and I had no problems installing it. But when I tried to connect to the internet, the trouble began.My network card is installed and the status is "OK". The network card is a "Realtek RTL 8168C(P)/8111C(P)".The status of the device said "Inactive" and when I tried to activate it, it came with an error: Failed; no link present. Check Cable?Now the cable is connected as it should be.So next step I did is put in a static IP. Now the activation works fine.However I still have no internet. I can't even ping to my router!I need some new drivers for my graphics card too, but first I need the network to work, than I can download other stuff..
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Feb 4, 2010
Previously posted under "Wireless Connection Can't Even Ping Router".I've been using Ubuntu for two years. About a year ago I switched to Kubuntu because I prefer the KDE desktop. Two weeks ago I bought a new laptop: Dell Vostro v13. I installed Kubuntu 9.10 from the live CD and everything worked! Well, almost. I also set up a home wireless network with a new Belkin N+ router from WalMart. When I try to connect to my router, the Plasma Network Manager reports that I'm connected and the assigned IP address, but I'm not truly connected! I can't even ping my own router, all packets are lost.
This problem is intermittent, sometimes I connect fine. I dual-boot with Windoze7 and it connects without problems. Also, if I connect with Windoze, then re-boot into Kubuntu, it seems to "wake-up" the connection somehow and it works. I might also add that I connect without difficulty to other routers in my neighborhood, at work, in airports, etc.My old laptop was also running Kubuntu 9.10, and it connected to the Belkin router without problems, although it was a different wireless card and driver. I also tried Ubuntu 9.10 from the live CD and it also reported a connection, IP address, etc. I couldn't ping the router from that connection either!
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Feb 16, 2011
I'm running into a curious networking hiccup with my router setup. I have a D-Link DIR-628 wireless router connected to our modem, and a wire running from that to a Linksys WRT-54G (v1.1) in our basement. This setup worked great for a few days, but then suddenly the Linksys stopped routing us to the internet. I can connect to the router page on the Linksys and using the diagnostic tools I can ping the web from there, but none of the computers connected to it can. Everything is fine when connected to the D-Link.
After fiddling around with just about every setting on the Linksys I finally gave up and tried resetting it to factory defaults--and it worked! Everyone could access the internet again. But then, every day or two it locks up again and I have to reset factory defaults again.
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Jun 9, 2010
i have Fedora 13 dual booting with Win XP and i cannot ping my router in Fedora. just reinstalled and i'm still unable to ping my router.everything looks like it was installed correctly except in the ifcfg-eth0 it has IPV4_FAILURE_FATAL=yes dont think this should have a value of yes.
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Sep 20, 2010
I have a desktop computer (Ubuntu) connected to one of the LAN ports of the Cradlepoint MBR1000 router via an Ethernet cable. I also have a Verizon mobile broadband USB modem (USB760) plugged into the USB port of the Cradlepoint router.I also have a laptop (Ubuntu) with a wireless wi-fi adapter (802.11g). The laptop also has an Ethernet card but I'm not using it. The desktop computer does not have a wi-fi adapter, only the laptop does.
With the above setup, I have Internet access to both the desktop computer as well as the laptop computer, which I am well pleased with.Is there a way I can have file sharing between the desktop and the laptop, or at least ping between them, the way I have it set up? I can't use the ad-hoc method because for that to work each computer needs a wi-fi adapter. The router is using DHCP but can also be configured manually.
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Jun 30, 2011
I have a Belkin wireless router model F5D7234-4 version 5. I switched to DHCP long enough to access the router via Firefox browser and look at all the settings. I turned off all encryption and other security related functions in order to just get it going. The IP of the router is 192.168.2.1 which is the default for this router. It is set to channel 6. I can not ping the router from either of two machines using regular ethernet or wireless. I have very limited experience with routers and am in need of help so I can use this for wireless connection to my living room box to my laptop in the bedroom about 50 feet away.
I tried changing the gateway from the living room box IP number to the router IP number with no success. I don't have anything connected to the internet port on the router. The living room box and the laptop are connected to the ethernet ports on the router. Ethernet works fine. Wireless does not. I compiled and installed the drivers for my wireless card on the laptop, a Realtek 8176 which uses the kernel modules rtl8192ce, rtlwifi and mac80211. ifup wlan0 brings up the wlan interface with these modules loaded. Right now I just want to be able to ping the router using regular ethernet. That would tickle me pink at this point. I downloaded the manual but I just can't seem to make headway.
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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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Dec 9, 2010
Fresh install of 10.04.1 server; installs seamlessly; finds network no problem.
However, establishing static connection is driving me batty. Will not take. I've reconfigured "interfaces" file several times. My fingers are numb ifdown-ing and ifup-ing and /etc/init.d/network restart-ing.
I have two files in /etc/network ... interfaces and interfaces~ (one static and the other dhcp). I can switch them in and out of play. The dhcp works and pings out like a champ. static is dead, just dead. Cannot ping router ... nothing.
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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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Dec 15, 2010
I have a router which have 4 ethernet ports(eth0,eth1,eth2,eth3,eth4 ) & One ADSL Line & One USB, I need to configure My router eth3 as a WAN & eth0 as a LAN using iperf, I am going to findout test a my Application(using iptables) whether my application is correct or wrong As of now I configured like server pc1(192.168.1.230)--->eth0(gw)(192.168.1.1)Router--eth3(gw)(192.168.2.1) -->pc2(192.168.2.157). For eth3 as a WAN and eth0 as a LAN. But I am not able to ping between two pc's.
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Jun 14, 2010
I have static route for eth1:
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eth1 (13.3.3.2) is connected to router port 2/0 (13.3.3.1). I am trying to ping from eth1 to router or vice versa. None of them is not working. Don't know what is problem. [root@perseus anvltest]# ping 13.3.3.1 PING 13.3.3.1 (13.3.3.1) 56(84) bytes of data.
3 packets transmitted, 0 received, 100% packet loss, time 2000ms
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Jun 15, 2011
I am trying to get an arp packet from my wireless wifi router (access point), to which I am not connected. I simply tried ping 192.168.0.1, but the answer was connect: network is unreachable. What can I do about that?
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Apr 22, 2010
I have a box that I installed Elastix on as I'm trying my hand at Voip and Linux. I'm basically very green when it comes to Linux and the console. As I was following a guide @ engineertim.com to securing the box, it asked me to: wget [URL], But I get: Resolving engineertim.com... failed: Temporary failure in name resolution. I searched around and tried configuring resolv.conf to no resolve - :) unintended pun
I changed /etc/sysconfig/network to include GATEWAY=192.168.1.1 From the internet I have a modem-192.168.2.1, a telecom voip box-192.168.15.1, and then my router 192.168.1.1 I'm able to ping machines attached to the router but nothing beyond that. I tried to get the results for ifconfig via putty on this machine but it says command not found. I can get it when I log in at the box in question though.
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Sep 14, 2010
So I installed 10.4 on a new Toshiba Satellite L645DWhen I connect to my wireless at home, the Network Manager shows that I am connected but I can't reach any websites via ping or firefox. I also can't ping my router. I also don't have wired access working at all.iwconfig shows connected to correct ESSIDI can ping localhostcan't ping google:
Code:
ping: unknown host www.google.com
can't ping my router (192.168.2.1):
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Jan 25, 2010
I have a machine running linux with 3 ethernet interfaces attached.
My Ifconfig:
My route output:
eth0 is attached to a laptop, eth1 is attached to a PC. eth2 is attached to a DSL modem, and the server is successfully acting as my internet gateway. The trouble is, my PC cannot see my laptop and vice versa. E.G. cannot ping, host seems down.
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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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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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Jan 13, 2010
I use a wired Dlink Adsl Router GLB502T with its inbuilt dialer configured. Problem is it will not connect while computer is running.When I try to ping the local ip of the modem this is what I get "ping: sendmsg: Operation not permitted" and "/etc/init.d/networking restart" has no effect either.I need to restart my computer every time i want to connect to the Internet.I switch on the modem when the grub bootloader appears and the modem connects without any problem.This problem appeared when i installed Ubuntu 9.04.There was no problem with Ubuntu 8.04.
OS:Ubuntu 9.04
Motherboard: Asus M2N68-AM
NVIDIA Geforce 7025/nForce 630a
RTL8211CL Phy Gigabit LAN
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Jan 31, 2010
I've only been using linux for a few days so I don't know all the tricks. I'm pretty savy configuring windows networks however.My adapter is (according to windows) a: CNet PRO200WL PCI fast ethernet adapterLinux says it is a: 21x4x DEC-tulip compatible 10/100 EthernetI do seem to be getting an ip address from the DHCP router, but I cannout ping any other ips or connect to the internet.I've tried a bunch of different options, switching things back and forth, but it still doesn't work, and honestly i don't even know what some of the options mean.
ALSO, if this helps:
paladin:~ # ifconfig eth0
Eth0 Link encap:Ethernet HWaddr 00:08:A1:03:3C:99
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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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Aug 9, 2011
I recently bought a HP laptop which is showing some issues. To make it precise:
1. I can connect to ethernet & wireless when i am at my university, which are quite good connections.
2. At my home, i share the internet with another guy. The connection is not very stable, in the sense that, sometimes the download speed is 1MiB/s, and sometime 250 KiB/s. I have a old laptop which can connect to it without any problem.
3. My new laptop can connect to it when the connection is better with download seed ~1MiB/s, but could not connect to it when the download speed goes down.
4. "could not connect" means even ping to router takes long time with 90% packet loss. But I can always get connection and ip address from dhcp although i can not ping thereafter. This is true for wired & wireless connection both. Is that a router issue? but then, why can i connect through the other laptop.
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Jun 9, 2011
For clairification, I can ping. I have tried several IP addresses and 100% success rate. When I noticed the problem I was trying to run sudo apt-get update && apt-get upgrade After some time I noticed these error messages to start with
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I tried to ping the adddress security.ubuntu.com from my Windows machine to verify that I could connect and was surprised when I could. I then pinged the address 91.189.92.167 which is what my windows machine resolved the name as and it went though.
My thoughts on this are that when my Ubuntu Router came up, for some reason it did not incorporate the ISP's DHCP servers into the ip address it obtained. Sadly I know to view ALL IP infomation in windows via ipconfig /all command but I do not know what this is in the *nix world. need commands that I can use to check and troubleshoot this apparently DHCP issue so I Can start to update my server and expand on its services?
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May 8, 2011
I have two network interface eth0 and eth1 eth0 is on 192.168.0/24 network connected to the internet eth1 is on 10.10.10/24 network and DHCP for this network the clients connected to this interface can not connect to the internet but they can ping 192.168.0.4 which is the eth0 ip but can not ping 192.168.0.1 cisco router or anything else on 192.168.0/24 I have tried few tricks but still not working
1) iptables -t nat -A POSTROUTING -s 10.10.10.0/24 -o eth0 j SNAT --to 192.168.0.4/24 it did not work
2) iptables -t nat -A POSTROUTING -o eth1 -j SNAT --to 192.168.0.4 did not work as well
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