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以Linux提供Client-to-LAN與LAN-to-LAN的VPN環境

ABC VPNVirtual Prinate NetworkPPP SERVER () ()VPNVPNVPNPPTP(Point-to-Point Tunneling Protocol,RFC2637)VPN InternetVPN LinuxLinuxVPNVPNLinux ()Linux(LAN-to-LAN)LinuxVPN ServerKernel 2.4.17PPTP(Point-to-Point Tunneling Protocol)PPP(Point to Point Protocol)SSH(Secure Shell)ClientWindows 2000Windows 2000PCMS WindowsWindows 2000 ()LinuxVPN LinuxVPN ServerNAT (Network Address Translation)PPP2.4.17 * * Networking options * Network packet filtering (replaces ipchains) (CONFIG_NETFILTER) Network packet filtering debugging (CONFIG_NETFILTER_DEBUG) * *IP: Netfilter Configuration * Connection tracking (required for masq/NAT) (CONFIG_IP_NF_CONNTRACK) ( NEW) m FTP protocol support (CONFIG_IP_NF_FTP) (NEW) m IRC protocol support (CONFIG_IP_NF_IRC) (NEW) m IP tables support (required for filtering/masq/NAT) (CONFIG_IP_NF_IPTABLES) [N/y /m/?] (NEW) m limit match support (CONFIG_IP_NF_MATCH_LIMIT) (NEW) m MAC address match support (CONFIG_IP_NF_MATCH_MAC) (NEW) m netfilter MARK match support (CONFIG_IP_NF_MATCH_MARK) (NEW) m Multiple port match support (CONFIG_IP_NF_MATCH_MULTIPORT) (NEW) m TOS match support (CONFIG_IP_NF_MATCH_TOS) (NEW) m LENGTH match support (CONFIG_IP_NF_MATCH_LENGTH) (NEW) m TTL match support (CONFIG_IP_NF_MATCH_TTL) (NEW) m tcpmss match support (CONFIG_IP_NF_MATCH_TCPMSS) (NEW) m Connection state match support (CONFIG_IP_NF_MATCH_STATE) (NEW) m Packet filtering (CONFIG_IP_NF_FILTER) (NEW) m REJECT target support (CONFIG_IP_NF_TARGET_REJECT) (NEW) m Full NAT (CONFIG_IP_NF_NAT) (NEW) m MASQUERADE target support (CONFIG_IP_NF_TARGET_MASQUERADE) (NEW) m REDIRECT target support (CONFIG_IP_NF_TARGET_REDIRECT) (NEW) m Packet mangling (CONFIG_IP_NF_MANGLE) (NEW) m TOS target support (CONFIG_IP_NF_TARGET_TOS) (NEW) m MARK target support (CONFIG_IP_NF_TARGET_MARK) (NEW) m LOG target support (CONFIG_IP_NF_TARGET_LOG) (NEW) m TCPMSS target support (CONFIG_IP_NF_TARGET_TCPMSS) (NEW) m ipchains (2.2-style) support (CONFIG_IP_NF_COMPAT_IPCHAINS) (NEW) m ipfwadm (2.0-style) support (CONFIG_IP_NF_COMPAT_IPFWADM) (NEW) m * * Network device support * PPP (point-to-point protocol) support (CONFIG_PPP) m PPP support for async serial ports (CONFIG_PPP_ASYNC) (NEW) m PPP support for sync tty ports (CONFIG_PPP_SYNC_TTY) (NEW) m PPP Deflate compression (CONFIG_PPP_DEFLATE) (NEW) m PPP BSD-Compress compression (CONFIG_PPP_BSDCOMP) (NEW) m * * Kernel hacking * Kernel debugging (CONFIG_DEBUG_KERNEL) y …… […]

Providing Seamless Roaming Service for Mobile Host with Multiple Communication Devices

Table 2 Processing overhead introduced by the proposed adaptive communication system Ethernet (IEEE 802.3) IP datagram receiving (without adaptive communication system) 5.509 Mb/sec IP datagram receiving (with adaptive communication system) 5.308 Mb/sec Percentage of receiving overhead (%) 3.65 IP datagram transmission (without adaptive communication system) 8.776 Mb/sec IP datagram transmission (with adaptive communication system) 8.424 Mb/sec Percentage of transmission overhead (%) 4.001 Figure 6 Snapshoot of the active device controller (I) Figure 7 Snapshoot of the active device controller (II) Figure 8 Snapshoot of the active device controller (III) 5. […]