[Openswan Users] IPSec authentication, but can't ping the desired network

Wed Jan 30 17:13:01 EST 2008

  Hi everyone,

  This should be a really simple configuration, I am looking to connect two subnetworks (softlayer and 10.23.23.0/24), and I believe the authentication is fine. However, I try to ping the network and it’s a no go. If anyone has any ideas, I’d be extremely grateful.

  Here’s what I get from 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 66.92.2.246
  000 interface eth0/eth0 66.92.2.246
  000 interface eth1/eth1 10.23.23.1
  000 interface eth1/eth1 10.23.23.1
  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=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 "softlayer": 10.23.23.0/24===66.92.2.246---66.92.2.1...10.12.132.1---38.96.196.93===10.12.132.64/26; erouted; eroute owner: #2
  000 "softlayer":     srcip=unset; dstip=unset; srcup=ipsec _updown; dstup=ipsec _updown;
  000 "softlayer":   ike_life: 3600s; ipsec_life: 28800s; rekey_margin: 540s; rekey_fuzz: 100%; keyingtries: 0
  000 "softlayer":   policy: PSK+ENCRYPT+TUNNEL+UP; prio: 24,26; interface: eth0;
  000 "softlayer":   newest ISAKMP SA: #1; newest IPsec SA: #2;
  000 "softlayer":   IKE algorithm newest: 3DES_CBC_192-MD5-MODP1024
  000
  000 #2: "softlayer":500 STATE_QUICK_I2 (sent QI2, IPsec SA established); EVENT_SA_REPLACE in 28196s; newest IPSEC; eroute owner
  000 #2: "softlayer" esp.6ad0d110 at 38.96.196.93 esp.dca4fcdd at 66.92.2.246 tun.0 at 38.96.196.93 tun.0 at 66.92.2.246
  000 #1: "softlayer":500 STATE_MAIN_I4 (ISAKMP SA established); EVENT_SA_REPLACE in 2754s; newest ISAKMP; lastdpd=-1s(seq in:0 out:0)

  Ipsec.conf:
  version 2.0     
  # basic configuration
  config setup
          interfaces="ipsec0=eth0"
          nat_traversal=yes

  include /etc/ipsec.d/*.conf

  softlayer.conf:
  conn softlayer
          type=tunnel
          authby=secret
          auto=start
          left=66.92.2.246
          leftnexthop=66.92.2.1
          leftsubnet=10.23.23.0/24
          right=38.96.196.93
          rightnexthop=10.12.132.1
          rightsubnet=10.12.132.64/26
          pfs=no

  and of course my PSK in ipsec.secrets.

  My routing table after everything is done looks like this:
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  10.12.132.64    66.92.2.1       255.255.255.192 UG    0      0        0 eth0
  66.92.2.0       0.0.0.0         255.255.255.0   U     0      0        0 eth0
  10.23.23.0      0.0.0.0         255.255.255.0   U     0      0        0 eth1
  169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
  0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 eth0

  I’m about to ditch Openswan for a crappy Linksys router with vpn (ugh!), so if anyone has ideas I’d be very happy :D

  Brian

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