Package: vpnc

"vpnc" package binaries on CentOS:

/usr/bin/cisco-decrypt /usr/sbin/vpnc /usr/sbin/vpnc-disconnect

You may install this package on CentOS with yum install vpnc

"vpnc" package binaries on Debian:

/usr/bin/cisco-decrypt /usr/bin/pcf2vpnc /usr/sbin/vpnc-connect /usr/sbin/vpnc /usr/sbin/vpnc-disconnect

You may install this package on Debian with apt-get install vpnc