• On your lxplus account, all known hosts are listed in file: ~/.ssh/known_hosts
• Loïc Brarda - System Manager LHCb - has set up a script to clean old keys from your .ssh/known_hosts and to install the good ones:

    location: /afs/cern.ch/lhcb/scripts/clean_online_ssh_keys.sh

• run the script on lxplus to update list of known hosts:

    [lxplus217] ~ >  ./../../../lhcb/scripts/clean_online_ssh_keys.sh

• For more information search for “ssh keys for the gateways” in lhcb-online-users@cern.ch mailing-list.