Hello, I have a problem to register my 5.2 system. When i launch rhn_register (with -v argument), i have the following message (/var/log/up2date indicates same errors): [Fri Dec 5 13:26:50 2008] rhn_register A protocol error occurred: Forbidden , attempt #1, [Fri Dec 5 13:26:55 2008] rhn_register A protocol error occurred: Forbidden , attempt #2, [Fri Dec 5 13:27:00 2008] rhn_register A protocol error occurred: Forbidden , attempt #3, [Fri Dec 5 13:27:05 2008] rhn_register A protocol error occurred: Forbidden , attempt #4, [Fri Dec 5 13:27:10 2008] rhn_register A protocol error occurred: Forbidden , attempt #5, and the register first step don't work. The message was reported by exception "except rpclib.ProtocolError, e:" in /usr/share/rhn/up2date_client/rpcServer.py file: # grep "protocol error occurred" * rpcServer.py: log.log_me("A protocol error occurred: %s , attempt #%s," % ( There is an auth proxy on my network and the rhn tools are configured like this (/etc/sysconfig/rhn/up2date): ############################################ # Automatically generated Red Hat Update Agent config file, do not edit. # Format: 1.0 versionOverride[comment]=Override the automatically determined system version versionOverride= enableProxyAuth[comment]=To use an authenticated proxy or not enableProxyAuth=1 networkRetries[comment]=Number of attempts to make at network connections before giving up networkRetries=5 enableProxy[comment]=Use a HTTP Proxy enableProxy=1 serverURL[comment]=Remote server URL serverURL=https://xmlrpc.rhn.redhat.com/XMLRPC proxyPassword[comment]=The password to use for an authenticated proxy proxyPassword=xxxxxx noSSLServerURL[comment]=None noSSLServerURL=http://xmlrpc.rhn.redhat.com/XMLRPC proxyUser[comment]=The username for an authenticated proxy proxyUser=xxxxxxxx disallowConfChanges[comment]=Config options that can not be overwritten by a config update action disallowConfChanges=noReboot;sslCACert;useNoSSLForPackages;noSSLServerURL;serverURL;disallowConfChanges; sslCACert[comment]=The CA cert used to verify the ssl server sslCACert=/usr/share/rhn/RHNS-CA-CERT debug[comment]=Whether or not debugging is enabled debug=1 httpProxy[comment]=HTTP proxy in host:port format, e.g. squid.redhat.com:3128 httpProxy=myproxyaddress:3128 systemIdPath[comment]=Location of system id systemIdPath=/etc/sysconfig/rhn/systemid noReboot[comment]=Disable the reboot actions noReboot=0 ############################################ I see at the top of this file that it is automaticly generated but by which command ? Maybe this is a firewall problem on my side ? Parallely, i'm trying to connect to remote server https://xmlrpc.rhn.redhat.com/XMLRPC via wget and proxy option. I don't have command up2date on don't find it in any packages that i have (5.2 DVD) mentionned on RedHat Network documentation (maybe i don't read the correct). Thanks in advance. System informations: # rhn_register --version rhn_register (Red Hat Network Client Tools) 0.4.17-8.el5 # cat /proc/version Linux version 2.6.18-92.1.18.el5 (brewbuilder@hs20-bc2-4.build.redhat.com) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Wed Nov 5 09:00:19 EST 2008 # more /etc/redhat-release Red Hat Enterprise Linux Server release 5.2 (Tikanga)