sorry for not mentioning before that iam new to linux i have full access to internet, this is an educational institution, every one have there seperate username and pasword for login... so i used the my username and password in the yum.conf file.. i tried from GUI also like system->Administration-> software update ,then i got the folowing warning and error Software Update Viewer is running as a privileged user Package management applications are security sensitive. Running graphical applications as a privileged user should be avoided for security reasons. problem connecting to software source i also tried system->Administration->Add/Remove software iam not understanding what else to try On Tue, Mar 27, 2012 at 1:29 PM, Prabhpal S. Mavi < prabhpal at digital-infotech.net> wrote: > > Hi, although it is not a O/S level problem. Your server just cannot get to > Internet, just check why. Too many possibilities are there, bad user name > or password wrong port number, system wide proxy variable configured, your > ip is in squid deny list. > > Thanks : Regards > > > > On 03/27/2012 02:10 AM, arun kumar wrote: > >> yes i configured the yum.conf > >> proxy=http://10.101.16.4:8080 > >> proxy_username=my_username > >> proxy_password=my_password > >> but still the same problem > >> here a squid proxy server is present so for initernet connection also i > >> need to give my_username and my_password..... > >> > >> > >> > >> > >> On Tue, Mar 27, 2012 at 11:42 AM, John R Pierce <pierce at hogranch.com> > >> wrote: > >> > >>> On 03/26/12 11:05 PM, arun kumar wrote: > >>>> I have centos 6.0 in my system and i want to update packages, so i > >>>> tried > >>>> the yum commands for checking and installing updates, but my proxy is > >>>> objecting and i got the following error > >>>> > >>>> Loaded plugins: fastestmirror, refresh-packagekit > >>>> Loading mirror speeds from cached hostfile > >>>> Could not retrieve mirrorlist > >>>> http://mirrorlist.centos.org/?release=6&arch=i386&repo=os error was > >>>> 14: PYCURL ERROR 22 - "The requested URL returned error: 407" > >>>> Error: Cannot find a valid baseurl for repo: base > >>>> > >>>> i tried with the software update GUI in centos 6.0 but still the same > >>> proxy > >>>> problem....can any one please suggest how to overcome this problem and > >>>> install updates for packages. > >>> what is this "proxy"? other than your use of the phrase 'proxy' a > >>> couple times, I see no sign of a proxy there. > >>> > >>> If your internet connection is such that you have to go through an > >>> explicit http proxy, have you configured it in /etc/yum.conf as > >>> follows? > >>> http://www.centos.org/docs/5/html/yum/sn-yum-proxy-server.html > >>> > >>> > >>> > >>> > >>> > >>> -- > >>> john r pierce N 37, W 122 > >>> santa cruz ca mid-left coast > >>> > >>> _______________________________________________ > >>> CentOS mailing list > >>> CentOS at centos.org > >>> http://lists.centos.org/mailman/listinfo/centos > >>> > >> > >> > > > > If the proxy server requires a username and password, add these to the > > URL. To include the username |yum-user| and the password |qwerty|, add > > these settings: > > > > |# The Web proxy server, with the username and password for this account > > http_proxy="http://yum-user:qwerty@mycache.mydomain.com:3128" > > export http_proxy| > > > > *Example 5. Profile Settings for a Secured Proxy Server* > > > > [Note] The |http_proxy| Environment Variable > > > > The |http_proxy| environment variable is also used by |curl| and other > > utilities. Although |yum| itself may use |http_proxy| in either > > upper-case or lower-case, |curl| requires the name of the variable to be > > in lower-case. > > > > > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > > Thanks / Regards > Prabhpal S. Mavi > Email: prabhpal at digital-infotech.net > Sent Through .Net Domain From iPhone > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Arun Kumar Somavarapu Project-JRF Dr. Prasanna's lab TMC, ACTREC Navi Mumbai-410210