SSL VPNs have certain advantages over IPsec solutions, but some SSL VPN vendors are reinventing the wheel with network-layer SSL VPN gateways. The market for SSL VPN appliances has been set on fire in the last 18 months by a new generation of low-cost purpose-built appliances, lead by competitors such as Neoteris, Nortel, and Aventail. When network layer access is granted via an SSL connection, all of the security and control advantages of an SSL VPN are lost.”]
Source: https://www.csoonline.com/article/2116742/ssl-vpn-ipsec-killers-or-overkill.html