IPSec Libreswan und FritzBox

Hier sind die Konfigurationsdateien wie man eine VPN mit IPSec zwichen der Fritz Box und libreswan herstellt.

192.168.138.0/24 - lokales Netz auf dem Server

192.168.178.1 - lokales Netz Fritzbox

ipsec.conf

version 2.0  
config setup    
nat_traversal=yes        virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:10.8.0.0/24,%v4:192.168.138.0/24      
    oe=off      
    protostack=netkey     
conn avm    
    authby=secret    
    auto=add    
    type=tunnel    
    aggrmode=no    
    left=IP    
    leftid=@Domain  
    leftsourceip=192.168.138.1  
    leftsubnet=192.168.138.0/24  
    right=xxxxxxxx.myfritz.net  
    rightsourceip=192.168.178.1  
    rightsubnet=192.168.178.0/24  
    rightid=@xxxxxxxxx.myfritz.net  
    ike=aes256-sha1;modp2048  
    phase2=esp  
    pfs=yes  
    dpddelay=60  
    dpdaction=restart  
    dpdtimeout=60

ipsec.secrets

Server_IP   %any: PSK "Mein_super_geheimes_PW"

fritz.cfg

vpncfg {
         connections {
                 enabled = yes;
                 conn_type = conntype_lan;
                 name = "Name von VPN";
                 always_renew = yes;
                 reject_not_encrypted = no;
                 dont_filter_netbios = yes;
                 localip = 0.0.0.0;
                 local_virtualip = 0.0.0.0;
                 remoteip = 0.0.0.0;
                 remote_virtualip = 0.0.0.0;
                 remotehostname = "Servername_oder_IP";
                 localid {
                         fqdn = "xxxxxxxxxxxxxx.myfritz.net";
                 }
                 remoteid {
                         fqdn = "Servername";
                 }
                 mode = phase1_mode_idp;
                 phase1ss = "dh14/aes/sha";
                 keytype = connkeytype_pre_shared;
                 key = "Mein_super_geheimes_PW";
                 cert_do_server_auth = no;
                 use_nat_t = no;
                 use_xauth = no;
                 use_cfgmode = no;
                 phase2localid {
                         ipnet {
                                 ipaddr = 192.168.178.0;
                                 mask = 255.255.255.0;
                         }
                 }
                 phase2remoteid {
                         ipnet {
                                 ipaddr = 192.168.138.0;
                                 mask = 255.255.255.0;
                         }
                 }
                 phase2ss = "esp-aes256-3des-sha/ah-no/comp-lzs-no/pfs";
                 accesslist = "permit ip any 192.168.138.0 255.255.255.0";
                               
         }
         ike_forward_rules = "udp 0.0.0.0:500 0.0.0.0:500",
                             "udp 0.0.0.0:4500 0.0.0.0:4500";
}

// EOF