[Openswan Users] the packets did not traffic under ESP tunnel on openswan

[Ozai]

Dear Sirs,

I do not set any policies SPD on openswan.The following setkey rules are just on the ipsec-tool.You mean we do not need to set any policies on openswan,right?How does openswan pass packets through the tunnel?

Best Regards,
Ozai
  ----- Original Message ----- 
  From: Panagiotis Tamtamis 
  To: Ozai 
  Cc: Paul Wouters ; users at openswan.org 
  Sent: Monday, March 19, 2012 4:44 PM
  Subject: Re: [Openswan Users] the packets did not traffic under ESP tunnel on openswan


  openswan configures kernel with policies SPD in order to pass packets through the tunnel.
  with spdflush I guess you delete all these rules.
  openswan at minimum configures 3 SPD policies. in out fwd


  From your rules I miss the fwd rule.


  2012/3/19 Ozai <ozai.tien at gmail.com>

    Dear Paul,

    In ipsec-tool,we use the setkey to manipulate the Security Policy Database(SPD) as  IPSec policy.so kernel can unserstand which packets need to traffic under ESP tunnel,which packets do not need.the following is the setkey configuration.

    Do we have any policy control like ipsec-tool on openswan?

    # cat setkey.conf
    flush;
    spdflush;
    spdadd 192.168.1.254/24 192.168.1.254/24 any -P out none;
    spdadd 192.168.1.254/24 192.168.1.254/24 any -P in none;
    spdadd 192.168.1.0/24 192.168.2.0/24 any -P out ipsec esp/tunnel/220.229.43.164-111.83.84.59/require;
    spdadd 192.168.2.0/24 192.168.1.0/24 any -P in ipsec esp/tunnel/111.83.84.59-220.229.43.164/require;


    Best Regards,
    Ozai
    ----- Original Message ----- From: "Paul Wouters" <paul at nohats.ca>
    To: "Ozai" <ozai.tien at gmail.com>
    Cc: <users at openswan.org>

    Sent: Monday, March 19, 2012 12:52 PM

    Subject: Re: [Openswan Users] the packets did not traffic under ESP tunnel on openswan



      On Mon, 19 Mar 2012, Ozai wrote:


        It still did not work after adding your suggestions.
        B can ping to A but A can not ping to B even from device itself.
        I captured the packets by wireshark and found the packets from A client always did not traffic under ESP tunnel.Do you have any suggestion for us


      do the clients have the ipsec gateway as default router? If not, they
      might need to get a route for the remote subnet via the ipsec gateway.

      Paul




        A client---------------openswan gateway------------------------------ipsec-tool gateway---------------------B client
        192.168.1.2         192.168.1.1     111.243.152.132 111.243.156.217 192.168.2.254              192.168.2.1

        Best Regards,
        Ozai
        ----- Original Message ----- From: "Paul Wouters" <paul at nohats.ca>
        To: "Ozai" <ozai.tien at gmail.com>
        Cc: <users at openswan.org>
        Sent: Saturday, March 17, 2012 11:01 PM
        Subject: Re: [Openswan Users] the packets did not traffic under ESP tunnel on openswan



          On Thu, 15 Mar 2012, Ozai wrote:


            I merged the openswan(2.6.37) into embedded linux(mips) and tried to make the connection with another ipsec
            system(ipsec-tools).The ESP tunnel can be built successfully.I tried to ping private client from ipsec-tools to
            openswan.It's OK.but from openswan to ipsec-tools,It's failed.I found that from openswan to ipsec-tools,the packets did
            not traffic under ESP tunnel.My settings are as below.Please help me to correct my procedure.thank's.


          Did you test from the device itself? Did you ping -I ?
          Try adding:

           leftsourceip=111.243.152.132
          rightsourceip=111.243.156.217

          Ensure you are not NATing packes for/to the 192.168 ranges.
          Ensure you have forwarding enabled, and rp_filter disabled

          (if your embedded system has perl, try "ipsec verify"

          Paul 


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