-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 26/04/2013 04:03, Nathan Moore wrote:
> Context: small academic cluster of SL5.8 machines, x86_64.
> 
> Recently, some of the machines on the cluster stopped being able to
> access the outside internet.  Machines can still update via ftp, yum,
> nslookup, and ping, but http requests beyond the local cluster seem to
> be universally denied.  I've never encountered a problem like this
> before (and it is probably my own fault, as I am a self-taught
> sys-admin), but I'm wondering if anyone else has seen a similar problem.
> 
> Bonus points if you can tell me where in /etc  or /var I should look to
> find the offending config file.
> 
> regards,
> 
> NTM

Hello Nathan

could you be more specific about the procedure you are following and the
error? there are a lot of layers involved in a "simple" http request :)

things I would check:

- - DNS name resolution, try accessing a website by its IP address
- - proxy configuration (is it the same on every node?)
- - firewalls

Gilberto


- -- 
- --
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with undefined - http://www.enigmail.net/
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=n7xI
-----END PGP SIGNATURE-----