[strongSwan] dpd not getting triggered

Mon Jan 15 18:56:22 CET 2018

Hi

Are these below not dpd-keepalive informational messages?....i think
dpd-keepalive is being exchanged between the peers...

=========================
1[IKE] peer supports MOBIKE Jan 12 08:34:15 strongswan charon: 06[IKE]
sending DPD request Jan 12 08:34:15 strongswan charon: 06[ENC] generating
INFORMATIONAL request 2 [ ] Jan 12 08:34:15 strongswan charon: 06[NET]
sending packet: from 10.127.47.104[4500] to 10.104.108.110[4500] (80 bytes)
Jan 12 08:34:15 strongswan charon: 15[NET] received packet: from
10.104.108.110[4500] to 10.127.47.104[4500] (80 bytes) Jan 12 08:34:15
strongswan charon: 15[ENC] parsed INFORMATIONAL response 2 [ ] Jan 12
08:34:20 strongswan charon: 05[IKE] sending DPD request Jan 12 08:34:20
strongswan charon: 05[ENC] generating INFORMATIONAL request 3 [ ] Jan 12
08:34:20 strongswan charon: 05[NET] sending packet: from
10.127.47.104[4500] to 10.104.108.110[4500] (80 bytes) Jan 12 08:34:20
strongswan charon: 07[NET] received packet: from 10.104.108.110[4500] to
10.127.47.104[4500] (80 bytes) Jan 12 08:34:20 strongswan charon: 07[ENC]
parsed INFORMATIONAL response 3 [ ]
===============================

On Sun, Jan 14, 2018 at 10:42 PM, Kalyani Garigipati (kagarigi) <
kagarigi at cisco.com> wrote:

> Hi,
>
> Could someone reply on this please
>
> Regards,
> Kalyani
>
> -----Original Message-----
> From: Users [mailto:users-bounces at lists.strongswan.org] On Behalf Of
> Kalyani Garigipati (kagarigi)
> Sent: Friday, January 12, 2018 5:22 PM
> To: Andreas Steffen <andreas.steffen at strongswan.org>; bls s <
> blscl at outlook.com>; users at lists.strongswan.org
> Subject: Re: [strongSwan] dpd not getting triggered
>
> Hi Andreas,
>
> Sorry the message came unformatted.
>
> Basically the message is going without nat payloads
>
> generating INFORMATIONAL request 3 []
>
> please let me know if I have to enable something. I already enabled mobike.
>
> regards,
> kalyani
>
>
>
>
> -----Original Message-----
> From: Users [mailto:users-bounces at lists.strongswan.org] On Behalf Of
> Kalyani Garigipati (kagarigi)
> Sent: Friday, January 12, 2018 4:14 PM
> To: Andreas Steffen <andreas.steffen at strongswan.org>; bls s <
> blscl at outlook.com>; users at lists.strongswan.org
> Subject: Re: [strongSwan] dpd not getting triggered
>
> Hi Andreas,
>
> But I observed that even though I enabled mobike, dpd is not sending the
> NAT detection payload.
>
> Below are the logs. I am using strongswan-5.6.1
>
> charon: 08[NET] sending packet: from 10.127.47.104[500] to
> 10.104.108.110[500] (524 bytes) Jan 12 08:34:10 strongswan charon: 10[NET]
> received packet: from 10.104.108.110[500] to 10.127.47.104[500] (471 bytes)
> Jan 12 08:34:10 strongswan charon: 10[ENC] parsed IKE_SA_INIT response 0 [
> SA KE No V V N(NATD_S_IP) N(NATD_D_IP) CERTREQ N(FRAG_SUP) V ] Jan 12
> 08:34:10 strongswan charon: 10[IKE] received Cisco Delete Reason vendor ID
> Jan 12 08:34:10 strongswan charon: 10[IKE] received Cisco Copyright (c)
> 2009 vendor ID Jan 12 08:34:10 strongswan charon: 10[IKE] received
> FRAGMENTATION vendor ID Jan 12 08:34:10 strongswan charon: 10[IKE] received
> 1 cert requests for an unknown ca Jan 12 08:34:10 strongswan charon:
> 10[IKE] sending cert request for "C=US, O=Cisco, CN=
> BrianMojaveRoot.cisco.com, CN=BrianMojaveRoot.cisco.com"
> Jan 12 08:34:10 strongswan charon: 10[IKE] authentication of
> '10.127.47.104' (myself) with pre-shared key Jan 12 08:34:10 strongswan
> charon: 10[IKE] establishing CHILD_SA net-net{1} Jan 12 08:34:10 strongswan
> charon: 10[ENC] generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) CERTREQ
> IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(ADD_4_ADDR) N(ADD_4_ADDR) N(ADD_4_ADDR)
> N(ADD_4_ADDR) N(ADD_6_ADDR) N(ADD_6_ADDR) N(ADD_6_ADDR) N(ADD_6_ADDR)
> N(EAP_ONLY) N(MSG_ID_SYN_SUP) ] Jan 12 08:34:10 strongswan charon: 10[NET]
> sending packet: from 10.127.47.104[4500] to 10.104.108.110[4500] (528
> bytes) Jan 12 08:34:10 strongswan charon: 11[NET] received packet: from
> 10.104.108.110[4500] to 10.127.47.104[4500] (256 bytes) Jan 12 08:34:10
> strongswan charon: 11[ENC] parsed IKE_AUTH response 1 [ V IDr AUTH SA TSi
> TSr N(ESP_TFC_PAD_N) N(NON_FIRST_FRAG) N(MOBIKE_SUP) ] Jan 12 08:34:10
> strongswan charon: 11[IKE] authentication of '10.104.108.110' with
> pre-shared key successful Jan 12 08:34:10 strongswan charon: 11[IKE] IKE_SA
> net-net[1] established between 10.127.47.104[10.127.47.104]..
> .10.104.108.110[10.104.108.110]
> Jan 12 08:34:10 strongswan charon: 11[IKE] scheduling reauthentication in
> 5093s Jan 12 08:34:10 strongswan charon: 11[IKE] maximum IKE_SA lifetime
> 5573s Jan 12 08:34:10 strongswan charon: 11[IKE] received
> ESP_TFC_PADDING_NOT_SUPPORTED, not using ESPv3 TFC padding Jan 12 08:34:10
> strongswan charon: 11[IKE] CHILD_SA net-net{1} established with SPIs
> c6fbf7d4_i 775e9cde_o and TS 10.127.47.104/32 === 10.104.108.110/32 Jan
> 12 08:34:10 strongswan charon: 11[IKE] peer supports MOBIKE Jan 12 08:34:15
> strongswan charon: 06[IKE] sending DPD request Jan 12 08:34:15 strongswan
> charon: 06[ENC] generating INFORMATIONAL request 2 [ ] Jan 12 08:34:15
> strongswan charon: 06[NET] sending packet: from 10.127.47.104[4500] to
> 10.104.108.110[4500] (80 bytes) Jan 12 08:34:15 strongswan charon: 15[NET]
> received packet: from 10.104.108.110[4500] to 10.127.47.104[4500] (80
> bytes) Jan 12 08:34:15 strongswan charon: 15[ENC] parsed INFORMATIONAL
> response 2 [ ] Jan 12 08:34:20 strongswan charon: 05[IKE] sending DPD
> request Jan 12 08:34:20 strongswan charon: 05[ENC] generating INFORMATIONAL
> request 3 [ ] Jan 12 08:34:20 strongswan charon: 05[NET] sending packet:
> from 10.127.47.104[4500] to 10.104.108.110[4500] (80 bytes) Jan 12 08:34:20
> strongswan charon: 07[NET] received packet: from 10.104.108.110[4500] to
> 10.127.47.104[4500] (80 bytes) Jan 12 08:34:20 strongswan charon: 07[ENC]
> parsed INFORMATIONAL response 3 [ ]
>
> Regards,
> Kalyani
>
> -----Original Message-----
> From: Andreas Steffen [mailto:andreas.steffen at strongswan.org]
> Sent: Friday, January 12, 2018 2:46 PM
> To: Kalyani Garigipati (kagarigi) <kagarigi at cisco.com>; bls s <
> blscl at outlook.com>; users at lists.strongswan.org
> Subject: Re: [strongSwan] dpd not getting triggered
>
> Hi Kalyani,
>
> strongSwan uses NAT detection payloads in INFORMATIONAL messages with RFC
> 4555 MOBIKE which is enabled by default. See
>
>   https://tools.ietf.org/html/rfc4555#section-3.8
>
> Regards
>
> Andreas
>
> On 12.01.2018 07:16, Kalyani Garigipati (kagarigi) wrote:
> > Hi,
> >
> >
> >
> > Thanks a lot for the reply. It worked. I see the dpd triggering now.
> >
> >
> >
> > I am working on a case when dpd from strongswan sends the nat
> > detection payloads.
> >
> > I wanted to know upon which conditions strongswan would send dpd
> > request with nat_detection_src_ip and nat_detection_dst_ip.
> >
> >
> >
> > Is it done only in specific case like when strongswan is behind the
> > nat ? and strongswan is in remote-access-client ?
> >
> >
> >
> > Regards,
> >
> > kalyani
> >
> >
> >
> > *From:*bls s [mailto:blscl at outlook.com]
> > *Sent:* Friday, January 12, 2018 6:40 AM
> > *To:* Kalyani Garigipati (kagarigi) <kagarigi at cisco.com>;
> > users at lists.strongswan.org
> > *Subject:* RE: [strongSwan] dpd not getting triggered
> >
> >
> >
> > By default dpdaction=none, which disables sending dpd messages.
> >
> >
> >
> > *From: *Kalyani Garigipati (kagarigi) <mailto:kagarigi at cisco.com>
> > *Sent: *Thursday, January 11, 2018 10:47 AM
> > *To: *users at lists.strongswan.org <mailto:users at lists.strongswan.org>
> > *Subject: *[strongSwan] dpd not getting triggered
> >
> >
> >
> > Hi,
> >
> > I am using strongswan version 5.6.1
> > I found that even though I configured dpd using dpddelay and
> > dpdtimeout, dpd is not getting triggered from strongswan client at all
> > even though there is no traffic passing.
> > Please let me know how to debug this.
> >
> >
> > config setup
> >          charondebug=all
> >         # crlcheckinterval=600
> >         # strictcrlpolicy=yes
> >         # cachecrls=yes
> >         # nat_traversal=yes
> >         # charonstart=no
> >
> > conn %default
> >        ikelifetime=100m
> >        keylife=20m
> >        rekeymargin=8m
> >        keyingtries=1
> >        authby=psk
> >        keyexchange=ikev2
> >        ike=aes256-sha256-modp1024
> >        esp=3des-sha1
> >        mobike=yes
> >        dpddelay=5s
> >        dpdtimeout=150s
> >
> > # Add connections here.
> >
> > # Add connections here.
> > conn net-net
> >         left=10.127.47.104
> >         leftsubnet=10.127.47.104/32
> >         leftid=10.127.47.104
> >         right=10.104.108.110
> >         rightsubnet=10.104.108.110/32
> >         rightid=10.104.108.110
> >         auto=start
> >
> > ~
> > Regards,
> > kalyani
> >
>
> --
> ======================================================================
> Andreas Steffen                         andreas.steffen at strongswan.org
> strongSwan - the Open Source VPN Solution!          www.strongswan.org
> Institute for Networked Solutions
> HSR University of Applied Sciences Rapperswil
> CH-8640 Rapperswil (Switzerland)
> ===========================================================[INS-HSR]==
>
>
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