[Openswan Users] Tunnel is up but private network is unreachable

Tue Jul 21 07:06:30 EDT 2015

Hello,

I am having difficulty in setting up a site to site vpn. Tunnel is up 
but private network is unreachable.

My side is debian linux firewall:

Public IP: xxx.xxx.xxx.xxx
Gateway: xxx.xxx.xxx.gw

Private IP: 192.168.4.12

The other side is a Cisco-ASA 5510:

Public IP: yyy.yyy.yyy.yyy

Private Network: 192.168.13.0/24

Here is my configuration file:

config setup
     plutoopts="--perpeerlog"
     nat_traversal=yes
virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:!192.168.4.0/24
     nhelpers=0

conn cisco
         authby=secret
         auto=start
         keyexchange=ike
         esp=3des-md5;modp1024
         ikelifetime=8h
         pfs=no
         type=tunnel
         left=xxx.xxx.xxx.xxx
         leftsourceip=192.168.4.12
         leftsubnet=192.168.4.0/24
         leftnexthop=%defaultroute
         right=yyy.yyy.yyy.yyy
         rightsubnet=192.168.13.0/24
         rightnexthop=%defaultroute

$ ipsec auto --status
000 interface lo/lo ::1
000 interface lo/lo 127.0.0.1
000 interface lo/lo 127.0.0.1
000 interface eth0/eth0 xxx.xxx.xxx.xxx
000 interface eth0/eth0 xxx.xxx.xxx.xxx
000 interface eth1/eth1 192.168.4.12
000 interface eth1/eth1 192.168.4.12
000 interface eth2/eth2 187.174.tt.ttt
000 interface eth2/eth2 187.174.tt.ttt
000 interface tun0/tun0 10.0.22.2
000 interface tun0/tun0 10.0.22.2
000 interface tun1/tun1 10.0.28.1
000 interface tun1/tun1 10.0.28.1
000 interface tun2/tun2 10.0.25.2
000 interface tun2/tun2 10.0.25.2
000 %myid = (none)
000 debug none
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=13, name=(null), ivlen=8, keysizemin=128, 
keysizemax=256
000 algorithm ESP encrypt: id=22, name=(null), 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=9, name=AUTH_ALGORITHM_AES_CBC, 
keysizemin=128, keysizemax=128
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={0,5,64} 
trans={0,5,1080} attrs={0,5,360}
000
000 "cisco": 
192.168.4.0/24===xxx.xxx.xxx.xxx---xxx.xxx.xxx.gw...xxx.xxx.xxx.gw---yyy.yyy.yyy.yyy===192.168.13.0/24; 
erouted; eroute owner: #8
000 "cisco":     srcip=192.168.4.12; dstip=unset; srcup=ipsec _updown; 
dstup=ipsec _updown;
000 "cisco":   ike_life: 28800s; ipsec_life: 28800s; rekey_margin: 540s; 
rekey_fuzz: 100%; keyingtries: 0
000 "cisco":   policy: PSK+ENCRYPT+TUNNEL+UP; prio: 24,24; interface: 
eth0; encap: esp;
000 "cisco":   newest ISAKMP SA: #7; newest IPsec SA: #8;
000 "cisco":   IKE algorithm newest: 3DES_CBC_192-SHA1-MODP1024
000 "cisco":   ESP algorithms wanted: 3DES(3)_000-MD5(1); 
pfsgroup=MODP1024(2); flags=strict
000 "cisco":   ESP algorithms loaded: 3DES(3)_000-MD5(1); 
pfsgroup=MODP1024(2); flags=strict
000 "cisco":   ESP algorithm newest: 3DES_0-HMAC_MD5; pfsgroup=<N/A>
000
000 #8: "cisco":500 STATE_QUICK_I2 (sent QI2, IPsec SA established); 
EVENT_SA_REPLACE in 27397s; newest IPSEC; eroute owner
000 #8: "cisco" esp.54ca394e at yyy.yyy.yyy.yyy 
esp.74437dee at xxx.xxx.xxx.xxx tun.0 at yyy.yyy.yyy.yyy tun.0 at xxx.xxx.xxx.xxx
000 #7: "cisco":500 STATE_MAIN_I4 (ISAKMP SA established); 
EVENT_SA_REPLACE in 27537s; newest ISAKMP; lastdpd=10s(seq in:0 out:0)
000

$ service ipsec status
IPsec running  - pluto pid: 15669
pluto pid 15669
1 tunnels up
some eroutes exist

$ ip xfrm state
src yyy.yyy.yyy.yyy dst xxx.xxx.xxx.xxx
     proto esp spi 0x74437dee reqid 16385 mode tunnel
     replay-window 32
     auth hmac(md5) 0x64171f9eccec636983692dfdbbc8c9e5
     enc cbc(des3_ede) 0xf6f04d7a1f008063f6ce4c2806b6b111c5d1d19286907345
     sel src 0.0.0.0/0 dst 0.0.0.0/0
src xxx.xxx.xxx.xxx dst yyy.yyy.yyy.yyy
     proto esp spi 0x54ca394e reqid 16385 mode tunnel
     replay-window 32
     auth hmac(md5) 0x9444902bea54768bb7e66aabdff1aea6
     enc cbc(des3_ede) 0xf0ca7c8f2b0429471e03c3d3e0739d57a1c9def0b2edddf5
     sel src 0.0.0.0/0 dst 0.0.0.0/0

$ less /var/run/pluto/ipsec.info
defaultroutephys=eth0
defaultroutevirt=ipsec0
defaultrouteaddr=xxx.xxx.xxx.xxx
defaultroutenexthop=xxx.xxx.xxx.gw

Can someone help me with this issue?

Thank you,

--
Mitsue