2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: received Vendor ID payload [RFC 3947]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [4df37928e9fc4fd1b3262170d515c662]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [8f8d83826d246b6fc7a8a6a428c11de8]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [439b59f8ba676c4c7737ae22eab8f582]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [4d1e0e136deafa34c4f3ea9f02ec7285]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [80d0bb3def54565ee84645d4c85ce3ee]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [9909b64eed937c6573de52ace952fa6b]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-03]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: received Vendor ID payload [XAUTH]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: ignoring Vendor ID payload [Cisco-Unity]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: packet from 200.194.99.10:500: received Vendor ID payload [Dead Peer Detection]
2011:11:30-11:12:06 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: responding to Main Mode from unknown peer 200.194.99.10
2011:11:30-11:12:07 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: NAT-Traversal: Result using RFC 3947: no NAT detected
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:08 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:11 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:14 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:17 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:18 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
2011:11:30-11:12:26 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3960: max number of retransmissions (2) reached STATE_MAIN_R2
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: Peer ID is ID_DER_ASN1_DN: 'C=br, L=Fortaleza, O=Grupo Auxilio, CN=redes'
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: crl not found
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: certificate status unknown
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: we have a cert and are sending it
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: unable to locate my private key for signature
2011:11:30-11:12:30 ASG120_Auxilio pluto[11626]: "D_for redes to Internal (Network)"[3] 200.194.99.10 #3961: sending encrypted notification AUTHENTICATION_FAILED to 200.194.99.10:500
This is a known issue with iOS 5. Apple dropped support for MD5 and now only supports certificates with SHA1 or SHA2. Search here for the solution - it requires some effort to compensate for Apple's thoughtlessness.