IPSEC Mikrotik(server) + WinXP(client)

Mikrotik  v 6.21 (server)

/ip ipsec proposal
set [ find default=yes ] enc-algorithms=3des auth-algorithms=sha1

/ip pool
add name=vpn_pool ranges=192.168.4.200-192.168.4.254

/interface l2tp-server server

set default-profile=profile_l2tp enabled=yes ipsec-secret=243211 use-ipsec=yes

(ipser peer  создается автоматический)

/ip address

add address=10.10.10.1/30 interface=ether4 network=10.10.10.0

/ip firewall filter

add chain=input dst-address=10.10.10.1 dst-port=500,1701 in-interface=ether4 \

    protocol=udp src-address=10.10.10.2

add chain=input dst-address=10.10.10.1 in-interface=ether4 protocol=ipsec-esp \

    src-address=10.10.10.2

WinXP(client)

https://kb.iweb.com/entries/22387228-Configuring-new-VPN-L2TP-IPSec-connections-on-Windows-XP

Ссылки

http://wiki.mikrotik.com/wiki/L2TP_%2B_IPSEC_between_Mikrotik_router_and_a_PC

http://wiki.mikrotik.com/wiki/MikroTik_RouterOS_and_Windows_XP_IPSec/L2TP

http://nixman.info/?p=2308