I have FC5 installed in the Laptop and I could surf to the internet without any issue till this morning. I had no problem last night, however, this morning, as I tried to open one of the website, I could not open the web. Then, I tried another web, still had same problem. So, I logged out and logged in my WinXP, my laptop has dual OS, I still could not access to the internet. Then, I made a call to the front desk, satying in a hotel, and they said the internet had some issue.

After the breakfast, tried to connect to the website, it worked. So, I switched to my FC5, but I could not access to the website. I wondered if my ethernet did not work and took some action to check the settings.

1.Run ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:6E:BD:32:A9
inet addr:192.168.1.26 Bcast:192.168.1.255 Mask:255.255.255.0
The result looks fine, I think, please correct me if it wrong.

2. Ping
Ping gmail.com
Ping: Unknown host gmail.com

Ping 216.239.37.99
From 192.168.1.1 icmp_seq=1 Destination Host Unreachable

I only can ping myself.

3. Route
Kernel IP routing table
Destination Gatwway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

I have no idea about the result.

4. Check Resolv.conf
; generated by /sbin/dhclient-script
nameserver 192.168.1.1
search localdomain

5. ifcfg-eth0
#Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet
Device=eth0
Bootprotp=dhcp
Hwaddr=00:0C:6E:BD:32:A9
Onboot=yes

After the above steps, I still can not figure out the trouble. Then, thinking about what did I do for the FC5 last night? Only onething I did for my FC5 is
put the following command in /etc/fstab
/dev/hda1 /mnt/WinXP vfat defaults 0 0

But, I don't think it the root cause since I restated the system and I could surf to the internet with no issue.

anyone can help me with this?

Ping 216.239.37.99
From 192.168.1.1 icmp_seq=1 Destination Host Unreachable

I only can ping myself.

3. Route
Kernel IP routing table
Destination Gatwway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

I have no idea about the result.

==>> Seems your default route has some problem.
From the ping it shows that your ip address is 192.168.1.1,
but defaut route's gateway is also 192.168.1.1
Try to set the default route properly and check if it works

Pronoy , please try to quote things using the quote button , to make things clearer.

DevLinX
It looks like your default gateway is not able to send packets beyond it.
The ping response says that from the gateway the host is unreachable , which means the issue is a routing problem at the gateway .
The default route seems to be set properly .

So I would suggest troubleshooting it at the gateway level.You can try pinging to the gateway first to make sure of this.Its also possible that the firewall at the gateway has blocked icmp. So you can try telnet to any Web server public ip port 80.

Hi, Pronoy

Thank you for your reply.
I re-installed FC5 again and I could access to the internet properly till last night. It happened again and I am quite sure that I did not change the system. So, can you instruct me how to find out the problem? Since I am staying in a hotel and I have no idea how to check the default route properly.

Hi nabeelmoidu,

I ping the gateway and I think it works. Can you help me how to telnet to any web server public ip port 80? Is the following command correct?
telnet gmail.com:80
Thanks