can ping IP but not URL???

Hi, folks

First, I must admit I'm a linux newbie. But things seem weird. I
can ping eternal IP addresses(whatever it is). And I can use nslookup
or dig. They all work fine. But I can't ping a website, say
www.google.com. Nor can I open it in Mozilla. I checked with the
/etc/resolv.conf, and it does have line: nameserver ***.***.***.***
I can only reach so far. And maybe some other config files wrong?


regards

dss_store@yahoo.com (Bruce Ding) writes:

]Hi, folks

] First, I must admit I'm a linux newbie. But things seem weird. I
]can ping eternal IP addresses(whatever it is). And I can use nslookup
]or dig. They all work fine. But I can't ping a website, say
]www.google.com. Nor can I open it in Mozilla. I checked with the
]/etc/resolv.conf, and it does have line: nameserver ***.***.***.***
] I can only reach so far. And maybe some other config files wrong?

Can you ping that IP address after the nameserver? Are you sure that
address is correct?
If you can ping an IP but not a name, the problem is with DNS resolving.
a) your nameserver in /etc/resolv.conf is wrong.
b) your permissions on /etc/resolv.conf are wrong (rw-r--r--)
c) your filewall blocks dns queries.

unruh@string.physics.ubc.ca (Bill Unruh) wrote in message news:<cabn05$rmd$1@string.physics.ubc.ca>...
> dss_store@yahoo.com (Bruce Ding) writes:
>
> ]Hi, folks
>
> ] First, I must admit I'm a linux newbie. But things seem weird. I
> ]can ping eternal IP addresses(whatever it is). And I can use nslookup
> ]or dig. They all work fine. But I can't ping a website, say
> ]www.google.com. Nor can I open it in Mozilla. I checked with the
> ]/etc/resolv.conf, and it does have line: nameserver ***.***.***.***
> ] I can only reach so far. And maybe some other config files wrong?
>
> Can you ping that IP address after the nameserver? Are you sure that
> address is correct?
> If you can ping an IP but not a name, the problem is with DNS resolving.
> a) your nameserver in /etc/resolv.conf is wrong.
> b) your permissions on /etc/resolv.conf are wrong (rw-r--r--)
> c) your filewall blocks dns queries.

Yes, I can ping IP addresses after the nameserver. I can even use
nslookup and dig to resolve host names(from these, dns server should
be fine). But I just can't ping hostname in terminal and use mozilla.

On Fri, 11 Jun 2004 07:38:47 -0700, Bruce Ding wrote:


> Yes, I can ping IP addresses after the nameserver. I can even use
> nslookup and dig to resolve host names(from these, dns server should be
> fine). But I just can't ping hostname in terminal and use mozilla.

Check /etc/nsswitch.conf. Ensure the "hosts" line contains "dns".

Dig and nslookup (and host) don't use nsswitch.conf, just about everything
else does.

Regards, Ian