Not able to access internet from my fedora11

ram_lock · 07-26-2009, 12:25 PM

I am using fedora11.

> cat /etc/resolv.conf
# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

DOMAIN=sdsmqa.lab.eng.btc.netapp.in
DNS1=10.72.248.10
DNS2=10.72.144.27

Don’t know from where ifconfig getting netmask as 255.255.0.0 when I set it for 255.255.255.0

root@kaushik_Fedora11 /> cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Networking Interface
DEVICE=eth0:0
HWADDR=00:50:56:AB:25:88
BOOTPROTO=static
IPADDR=10.72.248.114
NETMASK=255.225.255.0
ONBOOT=yes
TYPE=Ethernet
PREFIX=24
GATEWAY=10.72.248.1
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03

root@kaushik_Fedora11 /> cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=kaushik_Fedora11
FORWARD_IPV4=yes
GATEWAY=10.72.248.1

ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:56:AB:25:88
inet addr:10.72.248.114 Bcast:10.72.255.255 Mask:255.255.0.0
inet6 addr: fd20:8b1e:b255:40f8:250:56ff:feab:2588/64 Scope:Global
inet6 addr: fe80::250:56ff:feab:2588/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15258 errors:0 dropped:0 overruns:0 frame:0
TX packets:1515 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1314249 (1.2 MiB) TX bytes:309995 (302.7 KiB)
Interrupt:18 Base address:0x2000

> service network restart
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]

As a result i am not able to access any internet site.
The reason to access internet is i want to run my "yum update"

> ping google.com
ping: unknown host google.com

Please help me to sort it out

thnx,
RAM_LOCK

repo · 07-26-2009, 12:32 PM

Can you ping on IP?

Code:

ping 208.69.34.231

Can you ping the gateway?
Does the dns server responds?

Code:

telnet 10.72.248.10 53

Try to use open dns

Code:

208.67.222.222
208.67.220.220

decrepit · 07-27-2009, 05:43 AM

Quote:

Originally Posted by ram_lock

I am using fedora11.

>>>>>>>>
root@kaushik_Fedora11 /> cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Networking Interface
DEVICE=eth0:0
HWADDR=00:50:56:AB:25:88
BOOTPROTO=static
IPADDR=10.72.248.114
NETMASK=255.225.255.0
>>>>>>>>>>
RAM_LOCK

This last line looks wrong, 225 instead of 255, maybe your problem????

ram_lock · 07-28-2009, 03:58 AM

Made the require correction but that is not the problem...

root@kaushik_Fedora11 ~> cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Networking Interface
DEVICE=eth0:0
HWADDR=00:50:56:AB:25:88
BOOTPROTO=static
IPADDR=10.72.248.114
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet
PREFIX=24
GATEWAY=10.72.248.1
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
root@kaushik_Fedora11 ~> ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:50:56:AB:25:88
inet addr:10.72.248.114 Bcast:10.72.255.255 Mask:255.255.0.0
inet6 addr: fd20:8b1e:b255:40f8:250:56ff:feab:2588/64 Scope:Global
inet6 addr: fe80::250:56ff:feab:2588/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1450798 errors:7 dropped:0 overruns:0 frame:0
TX packets:174522 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:546356373 (521.0 MiB) TX bytes:18187490 (17.3 MiB)
Interrupt:18 Base address:0x2000

ram_lock · 07-28-2009, 04:02 AM

tried open DNS no help

As a work around i just included all sites i want to access in /etc/host
and they are working in that way.

repo · 07-28-2009, 05:05 AM

Quote:

As a work around i just included all sites i want to access in /etc/host
and they are working in that way.

Seems to me there is a firewall, preventing DNS queries

what is the output from

Code:

nslookup www.google.com

ram_lock · 07-28-2009, 05:40 AM

there is no firewall. I stopped it :
/sbin/service iptables stop

root@kaushik_Fedora11 ~> ping google.com
PING google.com (74.125.67.100) 56(84) bytes of data.
64 bytes from google.com (74.125.67.100): icmp_seq=1 ttl=46 time=312 ms
64 bytes from google.com (74.125.67.100): icmp_seq=2 ttl=46 time=327 ms
64 bytes from google.com (74.125.67.100): icmp_seq=3 ttl=46 time=324 ms
c64 bytes from google.com (74.125.67.100): icmp_seq=4 ttl=46 time=310 ms
64 bytes from google.com (74.125.67.100): icmp_seq=5 ttl=46 time=318 ms
^C
--- google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4380ms
rtt min/avg/max/mdev = 310.542/318.689/327.678/6.720 ms
root@kaushik_Fedora11 ~> nslookup google.com
;; connection timed out; no servers could be reached

root@kaushik_Fedora11 ~> cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
10.72.248.114 kaushik_Fedora11

74.125.67.100 google.com
66.35.62.166 mirrors.fedoraproject.org
134.160.38.1 ftp.riken.jp
195.151.243.25 ftp.rhd.ru
116.212.120.120 fedora.mirrors.hkt.cc
77.88.19.73 mirror.yandex.ru
134.160.38.1 ftp.riken.jp

repo · 07-28-2009, 05:42 AM

what is the output from

Code:

cat /etc/resolv.conf

ram_lock · 07-28-2009, 07:15 AM

root@kaushik_Fedora11 ~> cat /etc/resolv.conf
# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

#DOMAIN=sdsmqa.lab.eng.btc.netapp.in
#DNS1=10.72.248.10
#DNS2=10.72.144.27

DNS1=208.67.222.222
DNS2=208.67.220.220

repo · 07-28-2009, 07:17 AM

Try

Quote:

nameserver 208.67.222.222
nameserver 208.67.220.220

ram_lock · 07-28-2009, 07:17 AM

One more issue i am tracking in this thread is netmask is showing
different value.
Is it a bug in Fedora11?
Anyone logged it?

ram_lock · 07-29-2009, 04:45 AM

Hey Repo... It's working... Thanks buddy... Here goes the working model..

root@kaushik_Fedora11 ~> nslookup google.com
Server: 208.67.220.220
Address: 208.67.220.220#53

Non-authoritative answer:
Name: google.com
Address: 74.125.45.100
Name: google.com
Address: 74.125.127.100
Name: google.com
Address: 74.125.67.100

root@kaushik_Fedora11 ~> cat /etc/resolv.conf
# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

DOMAIN=sdsmqa.lab.eng.btc.netapp.in
DNS1=10.72.248.10
DNS2=10.72.144.27

nameserver 208.67.222.222
nameserver 208.67.220.220

ram_lock · 07-29-2009, 04:48 AM

I need the solution for the other issue i am facing with netmask.
Any idea from where it is picking up the netmask config?
root@kaushik_Fedora11 ~> ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:50:56:AB:25:88
inet addr:10.72.248.114 Bcast:10.72.255.255 Mask:255.255.0.0
inet6 addr: fd20:8b1e:b255:40f8:250:56ff:feab:2588/64 Scope:Global
inet6 addr: fe80::250:56ff:feab:2588/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2159687 errors:9 dropped:0 overruns:0 frame:0
TX packets:181004 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:607588714 (579.4 MiB) TX bytes:18888415 (18.0 MiB)
Interrupt:18 Base address:0x2000

root@kaushik_Fedora11 ~> cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Networking Interface
DEVICE=eth0:0
HWADDR=00:50:56:AB:25:88
BOOTPROTO=static
IPADDR=10.72.248.114
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet
PREFIX=24
GATEWAY=10.72.248.1
NAME="System eth0"
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03