Is there any limitation to the proxy authentication support of rhn_register?

The proxy of the network I'm on sends the follow 407:

HTTP/1.1 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied.  )
Via: 1.1 VANESSA
Proxy-Authenticate: Negotiate
Proxy-Authenticate: Kerberos    
Proxy-Authenticate: NTLM

It seems that rhn_register is not able to any of the authentication schemes above.

Any advise?

3 Answers 3

  • RedHat Network

    1. Open /etc/sysconfig/rhn/up2date for editing

    2. Change the following:





    1. Add Following missing lines, if you use user name and password authentication enableProxyAuth[comment]=To use an authenticated proxy or not enableProxyAuth=1

    2. Enter the user's password for the http proxy where it states the following:


    3. Enter the user's username for the http proxy where it states the following:


    4. Enter the URL for the proxy server, in host:port format, in the following line:


    5. Save the file.

  • Wget

    1. Open /root/.bach_profile for editing

    2. Add the following:

      export http_proxy="http://proxyUser:proxyPassword@httpProxy"

  • Yum

    1. Open /etc/yum.conf for editing

    2. Add the following:

      proxy=http://httpProxy proxy_username=proxyUser proxy_password=proxyPassword


There are two Knowledgebase articles which answer your question:

How can I access Red Hat Network (RHN), RHN Satellite or RHN proxy via an HTTP proxy?

Attempting to register my Red Hat Enterprise Linux server with Red Hat Network through a Microsoft ISA proxy fails. How can I resolve this?

Your RHN account is used to access the articles.

The second article mentions that NTLM is not directly supported by Red Hat, however there is a project which can be used to make it work.

Quick summary, edit the /etc/sysconfig/rhn/up2date file and enter the appropriate proxy information in there, making sure to set "enableProxy=1"


when you run :


did you try entering the proxy server in the form :



It looks like your proxy server requires Kerberos ticket rather than a straight username and password, does the ISA server require domain membership? This may be more difficult than straight HTTP proxy auth. I'm pretty sure rhn_proxy supports a http proxy with username and password but I couldn't find it in a quick look for the docs.

  • Yes, I did. It seems that rhn_register only support Basic HTTP Authentication.
    – kjloh
    Jan 13, 2011 at 4:11

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