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downgraded to the lib versions as on the working machine. Error remains. So it seems not an version issue of the libs. Hello, after an upgrade on a client machine we see cryptography protocol errors in the output of xrdfs. It seems to happen with the "ls" command only. It does not happen with "locate" for example. The message "Protocol not supported" is repeated for the numbers of data servers used. Other clients with the "old" libs do not show up this message. Stracing the xrdfs command shows that every data server is contacted and the error message is generated. No hint (well, for me) what and why it is failing. Heiko Auth config part: xrootd.seclib /usr/lib/libXrdSec.so sec.protocol /usr/lib sss -s /etc/xrootd/sss.keytab sec.protocol unix acc.authdb /etc/xrootd/Authfile acc.authrefresh 60 ofs.authorize CLIENT # xrdfs REDIRECTOR ls /data Secsss: 0x30 cryptography load failed; Protocol not supported ... <repeated for the number of data servers> ... Secsss: 0x30 cryptography load failed; Protocol not supported followed by directory output. Lib versions on the failing machine: libglobus-gsi-openssl-error0/xenial,now 3.8-1+gt6.xenial amd64 [Installiert,automatisch] libglobus-gsi-proxy-ssl1/xenial,now 5.10-1+gt6.xenial amd64 [Installiert,automatisch] libglobus-openssl-module0/xenial,now 4.8-2+gt6.xenial amd64 [Installiert,automatisch] libgnutls-openssl27/xenial-updates,now 3.4.10-4ubuntu1.4 amd64 [installiert] libio-socket-ssl-perl/xenial,xenial,now 2.024-1 all [Installiert,automatisch] libnet-ssleay-perl/xenial,now 1.72-1build1 amd64 [Installiert,automatisch] libssl-dev/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] libssl-doc/xenial-updates,xenial-updates,xenial-security,xenial-security,now 1.0.2g-1ubuntu4.12 all [Installiert,automatisch] libssl1.0.0/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] openssl/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] python-openssl/xenial,xenial,now 0.15.1-2build1 all [Installiert,automatisc Lib versions on a flawless machine: libglobus-gsi-openssl-error0/xenial,now 3.5-5 amd64 [Installiert,automatisch] libglobus-gsi-proxy-ssl1/xenial,now 5.7-5 amd64 [Installiert,automatisch] libglobus-openssl-module0/xenial,now 4.6-5 amd64 [Installiert,automatisch] libgnutls-openssl27/xenial-updates,now 3.4.10-4ubuntu1.4 amd64 [installiert] libssl-dev/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] libssl-doc/xenial-updates,xenial-updates,xenial-security,xenial-security,now 1.0.2g-1ubuntu4.12 all [Installiert,automatisch] libssl1.0.0/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] openssl/xenial-updates,xenial-security,now 1.0.2g-1ubuntu4.12 amd64 [installiert] -- ----------------------------------------------------------------------- Dipl.-Ing. Heiko Schröter Institute of Environmental Physics (IUP) phone: ++49-(0)421-218-62092 Institute of Remote Sensing (IFE) fax: ++49-(0)421-218-62070 University of Bremen (FB1) P.O. Box 330440 email: [log in to unmask] Otto-Hahn-Allee 1 28359 Bremen Germany ----------------------------------------------------------------------- ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1