strongSwan

h1. Endpoint Compliance via PT-EAP Protocol

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h2. Starting the strongSwan Policy Decision Point (PDP)

The strongSwan PDP starts and loads its server certificate and the client credentials

<pre>

00[DMN] Starting IKE charon daemon (strongSwan 5.2.1dr1, Linux 3.16.1, x86_64)

00[LIB] openssl FIPS mode(0) - disabled 

00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts'

00[CFG]   loaded ca certificate "C=CH, O=Linux strongSwan, CN=strongSwan Root CA" from '/etc/ipsec.d/cacerts/strongswanCert.pem'

00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts'

00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts'

00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts'

00[CFG] loading crls from '/etc/ipsec.d/crls'

00[CFG] loading secrets from '/etc/ipsec.secrets'

00[CFG]   loaded RSA private key from '/etc/ipsec.d/private/aaaKey.pem'

00[CFG]   loaded EAP secret for carol

00[CFG]   loaded EAP secret for dave 

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Next the OS and SWID IMVs are loaded

<pre>

00[TNC] TNC recommendation policy is 'default'

00[TNC] loading IMVs from '/etc/tnc_config'

00[TNC] added IETF attributes

00[TNC] added ITA-HSR attributes

00[TNC] added TCG attributes

00[LIB] libimcv initialized

00[IMV] IMV 1 "OS" initialized

00[TNC] IMV 1 supports 1 message type: 'IETF/Operating System' 0x000000/0x00000001

00[TNC] IMV 1 "OS" loaded from '/usr/local/lib/ipsec/imcvs/imv-os.so'

00[IMV] IMV 2 "SWID" initialized

00[TNC] IMV 2 supports 1 message type: 'TCG/SWID' 0x005597/0x00000003

O00[TNC] IMV 2 "SWID" loaded from '/usr/local/lib/ipsec/imcvs/imv-swid.so'

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The PDP loads all plugins needed to communicate via its EAP-RADIUS and PT-TLS interfaces and spawns 16 worker threads

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00[IKE] eap method EAP_TTLS selected

00[LIB] loaded plugins: charon aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 curl revocation hmac socket-default kernel-netlink stroke eap-identity eap-ttls eap-md5 eap-tnc tnc-pdp tnc-imv tnc-tnccs tnccs-20 sqlite

00[JOB] spawning 16 worker threads

09[CFG] received stroke: add connection 'aaa'

09[CFG] left nor right host is our side, assuming left=local

09[CFG]   loaded certificate "C=CH, O=Linux strongSwan, CN=aaa.strongswan.org" from 'aaaCert.pem'

09[CFG] added configuration 'aaa'

</pre>

h2. PT-EAP Connection by Access Requestor "dave" transported over EAP-RADIUS

<pre>

04[CFG] received RADIUS Access-Request from client '10.1.0.1'

04[CFG] created RADIUS connection for user 'dave' NAS 'strongSwan'

04[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

11[CFG] received RADIUS Access-Request from client '10.1.0.1'

11[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

</pre>

Set up an EAP-TTLS connection between AR and PDP

<pre>

11[TLS] negotiated TLS 1.2 using suite TLS_DHE_RSA_WITH_AES_128_CBC_SHA

11[TLS] sending TLS server certificate 'C=CH, O=Linux strongSwan, CN=aaa.strongswan.org'

11[TLS] sending TLS cert request for 'C=CH, O=Linux strongSwan, CN=strongSwan Root CA'

</pre>

<pre>

11[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

12[CFG] received RADIUS Access-Request from client '10.1.0.1'

12[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

12[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

13[CFG] received RADIUS Access-Request from client '10.1.0.1'

13[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

13[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/ID]

13[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

14[CFG] received RADIUS Access-Request from client '10.1.0.1'

14[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

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Received EAP-Identity of AR "dave"

<pre>

14[IKE] received tunneled EAP-TTLS AVP [EAP/RES/ID]

14[IKE] received EAP identity 'dave'

14[IKE] phase2 method EAP_MD5 selected

14[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/MD5]

</pre>

<pre>

14[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

03[CFG] received RADIUS Access-Request from client '10.1.0.1'

03[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

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EAP-MD5 based authentication of AR "dave"

<pre>

03[IKE] received tunneled EAP-TTLS AVP [EAP/RES/MD5]

03[IKE] EAP_TTLS phase2 authentication of 'dave' with EAP_MD5 successful

03[IKE] phase2 method EAP_PT_EAP selected

03[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/PT]

</pre>

<pre>

03[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

15[CFG] received RADIUS Access-Request from client '10.1.0.1'

15[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

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Upon reception of the first PB-TNC client batch, open an IF-TNCCS 2.0 connection

<pre>

15[IKE] received tunneled EAP-TTLS AVP [EAP/RES/PT]

15[IMV] IMV 1 "OS" created a state for IF-TNCCS 2.0 Connection ID 1: +long +excl -soh

15[IMV]   over IF-T for Tunneled EAP 2.0 with maximum PA-TNC message size of 65490 bytes

15[IMV]   user AR identity 'dave' authenticated by password

15[IMV] IMV 2 "SWID" created a state for IF-TNCCS 2.0 Connection ID 1: +long +excl -soh

15[IMV]   over IF-T for Tunneled EAP 2.0 with maximum PA-TNC message size of 65490 bytes

15[IMV]   user AR identity 'dave' authenticated by password

15[IMV] IMV 1 "OS" changed state of Connection ID 1 to 'Handshake'

15[IMV] IMV 2 "SWID" changed state of Connection ID 1 to 'Handshake'

</pre>

<pre>

15[TNC] received TNCCS batch (91 bytes) for Connection ID 1

15[TNC] PB-TNC state transition from 'Init' to 'Server Working'

15[TNC] processing PB-TNC CDATA batch

15[TNC] processing IETF/PB-PA message (52 bytes)

15[TNC] setting language preference to 'en'

</pre>

Received an Attribute Size Request for the 'TCG/SWID' PA message subtype from the SWID IMC

<pre>

15[TNC] handling PB-PA message type 'TCG/SWID' 0x005597/0x00000003

15[IMV] IMV 2 "SWID" received message for Connection ID 1 from IMC 2

15[IMV] => 28 bytes @ 0x7a5490

15[IMV]    0: 01 00 00 00 26 4B C3 0A 00 00 55 97 00 00 00 21  ....&K....U....!

15[IMV]   16: 00 00 00 14 05 F5 E1 00 00 00 7F A6              ............

15[TNC] processing PA-TNC message with ID 0x264bc30a

15[TNC] processing PA-TNC attribute type 'TCG/Max Attribute Size Request' 0x005597/0x00000021

15[IMV] received a segmentation contract from IMC 2 for PA message type 'TCG/SWID' 0x005597/0x00000003

15[IMV]   maximum attribute size of 100'000'000 bytes with maximum segment size of 32678 bytes

</pre>

Creating an Attribute Size Response for the 'TCG/SWID' PA message subtype back to the SWID IMC

<pre>

15[TNC] creating PA-TNC message with ID 0x45425ec5

15[TNC] creating PA-TNC attribute type 'TCG/Max Attribute Size Response' 0x005597/0x00000022

15[IMV] created PA-TNC message: => 28 bytes @ 0x7a5b00

15[IMV]    0: 01 00 00 00 45 42 5E C5 00 00 55 97 00 00 00 22  ....EB^...U...."

15[IMV]   16: 00 00 00 14 05 F5 E1 00 00 00 7F A6              ............

15[TNC] creating PB-PA message type 'TCG/SWID' 0x005597/0x00000003

</pre>

Creating an Attribute Size Request for the 'IETF Operating Systen' PA message subtype to any IMC subscribing to it

<pre>

15[IMV] IMV 1 requests a segmentation contract for PA message type 'IETF/Operating System' 0x000000/0x00000001

15[IMV]   maximum attribute size of 100'000'000 bytes with maximum segment size of 65446 bytes

15[TNC] creating PA-TNC message with ID 0x2ae6641f

15[TNC] creating PA-TNC attribute type 'TCG/Max Attribute Size Request' 0x005597/0x00000021

15[TNC] creating PA-TNC attribute type 'IETF/Attribute Request' 0x000000/0x00000001

15[IMV] created PA-TNC message: => 96 bytes @ 0x7a7ff0

15[IMV]    0: 01 00 00 00 2A E6 64 1F 00 00 55 97 00 00 00 21  ....*.d...U....!

15[IMV]   16: 00 00 00 14 05 F5 E1 00 00 00 FF A6 00 00 00 00  ................

15[IMV]   32: 00 00 00 01 00 00 00 44 00 00 00 00 00 00 00 02  .......D........

15[IMV]   48: 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 03  ................

15[IMV]   64: 00 00 00 00 00 00 00 05 00 00 00 00 00 00 00 0B  ................

15[IMV]   80: 00 00 00 00 00 00 00 0C 00 00 90 2A 00 00 00 08  ...........*....

15[TNC] creating PB-PA message type 'IETF/Operating System' 0x000000/0x00000001

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After appending an Attribute Request for various standard IETF attributes to this PA-TNC message, a first PB-TNC server batch is sent to the TNC client running on the AR

<pre>

15[TNC] PB-TNC state transition from 'Server Working' to 'Client Working'

15[TNC] creating PB-TNC SDATA batch

15[TNC] adding TCG/PB-PDP-Referral message

15[TNC] adding IETF/PB-PA message

15[TNC] adding IETF/PB-PA message

15[TNC] sending PB-TNC SDATA batch (222 bytes) for Connection ID 1

15[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/PT]

</pre>

<pre>

15[CFG] sending RADIUS Access-Challenge to client '10.1.0.1'

16[CFG] received RADIUS Access-Request from client '10.1.0.1'

16[CFG] found RADIUS connection for user 'dave' NAS 'strongSwan'

</pre>

<pre>

16[IKE] received tunneled EAP-TTLS AVP [EAP/RES/PT]

16[TNC] received TNCCS batch (248 bytes) for Connection ID 1

16[TNC] PB-TNC state transition from 'Client Working' to 'Server Working'

16[TNC] processing PB-TNC CDATA batch

16[TNC] processing IETF/PB-PA message (240 bytes)

</pre>

<pre>

16[TNC] handling PB-PA message type 'IETF/Operating System' 0x000000/0x00000001

16[IMV] IMV 1 "OS" received message for Connection ID 1 from IMC 1 to IMV 1

16[IMV] => 216 bytes @ 0x7a45b0

16[IMV]    0: 01 00 00 00 FD DE 12 F4 00 00 55 97 00 00 00 22  ..........U...."

16[IMV]   16: 00 00 00 14 05 F5 E1 00 00 00 7F A6 00 00 00 00  ................

16[IMV]   32: 00 00 00 02 00 00 00 17 00 25 72 00 00 44 65 62  .........%r..Deb

16[IMV]   48: 69 61 6E 00 00 00 00 00 00 00 04 00 00 00 19 0A  ian.............

16[IMV]   64: 37 2E 35 20 78 38 36 5F 36 34 00 00 00 00 00 00  7.5 x86_64......

16[IMV]   80: 00 00 00 03 00 00 00 1C 00 00 00 07 00 00 00 05  ................

16[IMV]   96: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05  ................

16[IMV]  112: 00 00 00 24 03 01 00 00 32 30 31 34 2D 31 30 2D  ...$....2014-10-

16[IMV]  128: 30 36 54 31 39 3A 33 31 3A 30 30 5A 00 00 00 00  06T19:31:00Z....

16[IMV]  144: 00 00 00 0B 00 00 00 10 00 00 00 01 00 00 00 00  ................

16[IMV]  160: 00 00 00 0C 00 00 00 10 00 00 00 00 00 00 90 2A  ...............*

16[IMV]  176: 00 00 00 08 00 00 00 2C 61 61 62 62 63 63 64 64  .......,aabbccdd

16[IMV]  192: 65 65 66 66 31 31 32 32 33 33 34 34 35 35 36 36  eeff112233445566

16[IMV]  208: 37 37 38 38 39 39 30 30                          77889900

16[TNC] processing PA-TNC message with ID 0xfdde12f4

16[TNC] processing PA-TNC attribute type 'TCG/Max Attribute Size Response' 0x005597/0x00000022

16[TNC] processing PA-TNC attribute type 'IETF/Product Information' 0x000000/0x00000002

16[TNC] processing PA-TNC attribute type 'IETF/String Version' 0x000000/0x00000004

16[TNC] processing PA-TNC attribute type 'IETF/Numeric Version' 0x000000/0x00000003

16[TNC] processing PA-TNC attribute type 'IETF/Operational Status' 0x000000/0x00000005

16[TNC] processing PA-TNC attribute type 'IETF/Forwarding Enabled' 0x000000/0x0000000b

16[TNC] processing PA-TNC attribute type 'IETF/Factory Default Password Enabled' 0x000000/0x0000000c

16[TNC] processing PA-TNC attribute type 'ITA-HSR/Device ID' 0x00902a/0x00000008

</pre>

<pre>

16[IMV] received a segmentation contract response for PA message type 'IETF/Operating System' 0x000000/0x00000001

16[IMV]   maximum attribute size of 100000000 bytes with maximum segment size of 32678 bytes

</pre>

<pre>

16[IMV] operating system name is 'Debian' from vendor Debian Project

16[IMV] operating system version is '7.5 x86_64'

16[IMV] operating system numeric version is 7.5

16[IMV] operational status: operational, result: successful

16[IMV] last boot: Oct 06 19:31:00 UTC 2014

16[IMV] IPv4 forwarding is enabled

16[IMV] factory default password is disabled

16[IMV] device ID is aabbccddeeff11223344556677889900

</pre>

<pre>

16[IMV] assigned session ID 2 to Connection ID 1

16[IMV] running policy script: 2>&1 ipsec imv_policy_manager start 2

16[IMV] policy: imv_policy_manager start successful

16[IMV] policy: No leaks detected, 11 suppressed by whitelist

16[IMV] DREFM workitem 1

16[IMV] FWDEN workitem 2

16[IMV] SWIDT workitem 3

</pre>

<pre>

16[IMV] IMV 1 handles FWDEN workitem 2

16[IMV] IMV 1 handled FWDEN workitem 2: isolate - forwarding enabled

16[TNC] creating PA-TNC message with ID 0x3fb2eb38

16[TNC] creating PA-TNC attribute type 'IETF/Assessment Result' 0x000000/0x00000009

16[TNC] creating PA-TNC attribute type 'IETF/Remediation Instructions' 0x000000/0x0000000a

16[IMV] created PA-TNC message: => 117 bytes @ 0x7ab630

16[IMV]    0: 01 00 00 00 3F B2 EB 38 00 00 00 00 00 00 00 09  ....?..8........

16[IMV]   16: 00 00 00 10 00 00 00 02 00 00 00 00 00 00 00 0A  ................

16[IMV]   32: 00 00 00 5D 00 00 00 00 00 00 00 02 00 00 00 42  ...]...........B

16[IMV]   48: 49 50 20 50 61 63 6B 65 74 20 46 6F 72 77 61 72  IP Packet Forwar

16[IMV]   64: 64 69 6E 67 0A 20 20 50 6C 65 61 73 65 20 64 69  ding.  Please di

16[IMV]   80: 73 61 62 6C 65 20 74 68 65 20 66 6F 72 77 61 72  sable the forwar

16[IMV]   96: 64 69 6E 67 20 6F 66 20 49 50 20 70 61 63 6B 65  ding of IP packe

16[IMV]  112: 74 73 02 65 6E                                   ts.en

16[TNC] creating PB-PA message type 'IETF/Operating System' 0x000000/0x00000001

16[TNC] IMV 1 is setting reason string to 'Improper OS settings were detected'

16[TNC] IMV 1 is setting reason language to 'en'

16[TNC] IMV 1 provides recommendation 'isolate' and evaluation 'non-compliant major'

</pre>