[FoLUG] Openswan nat-t

[Simone Stanzani]

Salve,
sto cercando di configurare una vpn con ipsec (Openswan) fra due 
macchine (con una sola scheda di rete) dietro a due normalissimi router 
adsl.

Uno dei route è un Michelangelo Wave 108 della Digicom, supporta il vpn 
pass-trougth (ammesso che ce ne sia bisogno).
Io l'ho configurato aggiungendo le porte 500 e 4500 nel port mapping,
per il nat-traversal, ma riesco a superare solo la fase 1 ...
non incapsulo...

Quello cher vorrei ottenere la possibilità di andare in ssh fra le due 
macchine attraverso gli indirizzi lan 192.168.0.50 10.11.5.2

Le ho provate tutte, la mia impressione è che bisogna  agire su i 
routers (virtual server ? DmZ Settings)  ....

Qualcuno mi sa dare una mano ?


Grazie Simone ;-)





Metto la configurazione della mia parte ...




# basic configuration
config setup
         interfaces="ipsec0=eth0"
         # plutodebug / klipsdebug = "all", "none" or a combation from 
below:
         # "raw crypt parsing emitting control klips pfkey natt x509 
private"
         # eg:
         # plutodebug="control parsing"
         #
         # Only enable klipsdebug=all if you are a developer
         #
         # NAT-TRAVERSAL support, see README.NAT-Traversal
         nat_traversal=no
 
#virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
         #
         # enable this if you see "failed to find any available worker"
         nhelpers=0
         klipsdebug=all
         plutodebug=all


# Add connections here

conn net-to-net
   right=10.11.5.2
   rightsubnet=10.11.0.0/16
 
rightrsasigkey=0sAQNjMFPn1A7LbXWoMr0ihBa3VY3Irv5hX0sNmT6zIjyOtzrvG5dOAp7/9aV1a3grQD/
   left=192.168.0.50
   leftnexthop=192.168.0.1
   leftsubnet=192.168.0.0/24
 
leftrsasigkey=0sAQOBMlRARX6I0MElGPryweuHmGrJu3GGgHtosPv0INGf+EtiZnPCZhbknArDr1cL
   rightid=@pirinslu2.dyndns.org
   leftid=@mazznslu2.dyndns.org
   auto=route








mazznslu2:~# ipsec auto --status
000 interface lo/lo 127.0.0.1
000 interface eth0/eth0 192.168.0.50
000 %myid = (none)
000 debug 
raw+crypt+parsing+emitting+control+lifecycle+klips+dns+oppo+controlmore+pfkey+nattraversal+x509
000
000 algorithm ESP encrypt: id=2, name=ESP_DES, ivlen=8, keysizemin=64, 
keysizemax=64
000 algorithm ESP encrypt: id=3, name=ESP_3DES, ivlen=8, keysizemin=192, 
keysizemax=192
000 algorithm ESP encrypt: id=7, name=ESP_BLOWFISH, ivlen=8, 
keysizemin=40, keysizemax=448
000 algorithm ESP encrypt: id=11, name=ESP_NULL, ivlen=0, keysizemin=0, 
keysizemax=0
000 algorithm ESP encrypt: id=12, name=ESP_AES, ivlen=8, keysizemin=128, 
keysizemax=256
000 algorithm ESP encrypt: id=252, name=ESP_SERPENT, ivlen=8, 
keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=253, name=ESP_TWOFISH, ivlen=8, 
keysizemin=128, keysizemax=256
000 algorithm ESP auth attr: id=1, name=AUTH_ALGORITHM_HMAC_MD5, 
keysizemin=128, keysizemax=128
000 algorithm ESP auth attr: id=2, name=AUTH_ALGORITHM_HMAC_SHA1, 
keysizemin=160, keysizemax=160
000 algorithm ESP auth attr: id=5, name=AUTH_ALGORITHM_HMAC_SHA2_256, 
keysizemin=256, keysizemax=256
000 algorithm ESP auth attr: id=251, name=(null), keysizemin=0, keysizemax=0
000
000 algorithm IKE encrypt: id=5, name=OAKLEY_3DES_CBC, blocksize=8, 
keydeflen=192
000 algorithm IKE encrypt: id=7, name=OAKLEY_AES_CBC, blocksize=16, 
keydeflen=128
000 algorithm IKE hash: id=1, name=OAKLEY_MD5, hashsize=16
000 algorithm IKE hash: id=2, name=OAKLEY_SHA1, hashsize=20
000 algorithm IKE dh group: id=2, name=OAKLEY_GROUP_MODP1024, bits=1024
000 algorithm IKE dh group: id=5, name=OAKLEY_GROUP_MODP1536, bits=1536
000 algorithm IKE dh group: id=14, name=OAKLEY_GROUP_MODP2048, bits=2048
000 algorithm IKE dh group: id=15, name=OAKLEY_GROUP_MODP3072, bits=3072
000 algorithm IKE dh group: id=16, name=OAKLEY_GROUP_MODP4096, bits=4096
000 algorithm IKE dh group: id=17, name=OAKLEY_GROUP_MODP6144, bits=6144
000 algorithm IKE dh group: id=18, name=OAKLEY_GROUP_MODP8192, bits=8192
000
000 stats db_ops.c: {curr_cnt, total_cnt, maxsz} :context={0,0,0} 
trans={0,0,0} attrs={0,0,0}
000
000 "net-to-net": 
192.168.0.0/24===192.168.0.50[@mazznslu2.dyndns.org]---192.168.0.1...10.11.5.2[@pirinslu2.dyndns.org]===10.11.0.0/16; 
erouted HOLD; eroute owner: #0
000 "net-to-net":     srcip=unset; dstip=unset; srcup=ipsec _updown; 
dstup=ipsec _updown;
000 "net-to-net":   ike_life: 3600s; ipsec_life: 28800s; rekey_margin: 
540s; rekey_fuzz: 100%; keyingtries: 0
000 "net-to-net":   policy: RSASIG+ENCRYPT+TUNNEL+PFS; prio: 24,16; 
interface: eth0;
000 "net-to-net":   newest ISAKMP SA: #0; newest IPsec SA: #0;
000
000 #1: "net-to-net":500 STATE_MAIN_I1 (sent MI1, expecting MR1); 
EVENT_RETRANSMIT in 16s; nodpd
000 #1: pending Phase 2 for "net-to-net" replacing #0
000 #1: pending Phase 2 for "net-to-net" replacing #0