CVS is deprecated. More information is at: http://wiki.freebsd.org/CvsIsDeprecated You should be checkout out from subversion. Mirror sites: http://www.freebsd.org/doc/handbook/mirrors-svn.html The legacy cvs repository is still obtainable from the cvsup mirror network. http://www.freebsd.org/doc/handbook/cvsup.html There are recently compressed copies of the src, ports, doc source trees in the /pub/FreeBSD/development/tarballs/ directory.