NetBSD和FreeBSD上实现的IKEv1协议，支持共享密钥、证书，支持主模式、野蛮模式和快速模式等-NetBSD and FreeBSD achieve IKEv1 agreement, support shared keys, certificates, support the main mode of barbaric and fast mode mode

极品防火墙源代码，哈哈，大家快下下去参考参考吧! 全源代码可正确编译 -Best firewall source code, under fast down refer to the reference! Wholly source code can be compiled correctly

　PIX是Cisco的硬件防火墙，硬件防火墙有工作速度快，使用方便等特点.-PIX is Cisco' s hardware firewall, hardware firewall to work fast, and easy to use.