After a long time I found the following solution: I use the "traditional" way by exporting an environment variable http_proxy. After editing yum.conf by adding a line "proxy=libproxy" everything works fine. Regards Tim Am 16.01.2015 um 22:52 schrieb Tim: > I read sth. about cntlm, but it is not installed by default. > > I will give the mentioned solutions a try. > > Any other suggestions are welcome. > > Am 16. Januar 2015 13:08:51 MEZ, schrieb Kwan Lowe <kwan.lowe at gmail.com>: >> On Wed, Jan 14, 2015 at 3:53 PM, Tim <lists at kiuni.de> wrote: >> >>> Hello list, >>> >>> how can I get CentOS 7 to authenticate against a Microsoft ISA server >> for >>> package installations after the OS is installed. >>> >>> In Debian/Ubuntu apt.conf just needs to be edited and it works. How >> to do >>> so in CentOS? >>> >> >> I use a program called cntlm. I don't know if an RPM is available but >> the >> source is trivial to build. I believe it also includes a SPEC file. >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >