The NCP Seremo Client communicates with VPN gateways supplied by a wide range of manufacturers, on the basis of the IPSec standard, e.g. Cisco, Checkpoint, D-Link, WatchGuard, FreeSwan, etc. (http://www.ncp.de/english/filedownload/IPsec_Compatibility.pdf). This involves client software that can be used as an alternative to the software clients offered on the market in the firewall and router area.