$ cvs co common
ssh_exchange_identification: Connection closed by remote host
cvs [checkout aborted]: end of file from server (consult above
messages if any)
$ ssh -v cquad@cvs.rpmfusion.org
OpenSSH_5.4p1, OpenSSL 1.0.0c-fips 2 Dec 2010
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to cvs.rpmfusion.org [195.10.6.64] port 22.
debug1: Connection established.
debug1: identity file /home/builder/.ssh/id_rsa type 1
debug1: identity file /home/builder/.ssh/id_rsa-cert type -1
debug1: identity file /home/builder/.ssh/id_dsa type -1
debug1: identity file /home/builder/.ssh/id_dsa-cert type -1
ssh_exchange_identification: Connection closed by remote host