charon.plugins.imc-attestation.aik_key =
AIK public key file.
+charon.plugins.imc-attestation.mandatory_dh_groups = yes
+ Enforce mandatory Diffie-Hellman groups.
+
charon.plugins.imc-attestation.nonce_len = 20
DH nonce length.
Use Quote2 AIK signature instead of Quote signature.
charon.plugins.imc-attestation.pcr_info = yes
- Whether to send pcr_before and pcr_after info.
\ No newline at end of file
+ Whether to send pcr_before and pcr_after info.
charon.plugins.imv-attestation.cadir =
Path to directory with AIK cacerts.
+charon.plugins.imv-attestation.mandatory_dh_groups = yes
+ Enforce mandatory Diffie-Hellman groups.
+
charon.plugins.imv-attestation.dh_group = ecp256
Preferred Diffie-Hellman group.
TNC_Version max_version,
TNC_Version *actual_version)
{
+ bool mandatory_dh_groups;
+
if (imc_attestation)
{
DBG1(DBG_IMC, "IMC \"%s\" has already been initialized", imc_name);
return TNC_RESULT_FATAL;
}
+ mandatory_dh_groups = lib->settings->get_bool(lib->settings,
+ "%s.plugins.imc-attestation.mandatory_dh_groups", TRUE, lib->ns);
+
if (!pts_meas_algo_probe(&supported_algorithms) ||
- !pts_dh_group_probe(&supported_dh_groups))
+ !pts_dh_group_probe(&supported_dh_groups, mandatory_dh_groups))
{
imc_attestation->destroy(imc_attestation);
imc_attestation = NULL;
private_imv_attestation_agent_t *this;
imv_agent_t *agent;
char *hash_alg, *dh_group, *cadir;
+ bool mandatory_dh_groups;
agent = imv_agent_create(name, msg_types, countof(msg_types), id,
actual_version);
"%s.plugins.imv-attestation.hash_algorithm", "sha256", lib->ns);
dh_group = lib->settings->get_str(lib->settings,
"%s.plugins.imv-attestation.dh_group", "ecp256", lib->ns);
+ mandatory_dh_groups = lib->settings->get_bool(lib->settings,
+ "%s.plugins.imv-attestation.mandatory_dh_groups", TRUE, lib->ns);
cadir = lib->settings->get_str(lib->settings,
"%s.plugins.imv-attestation.cadir", NULL, lib->ns);
libpts_init();
if (!pts_meas_algo_probe(&this->supported_algorithms) ||
- !pts_dh_group_probe(&this->supported_dh_groups) ||
+ !pts_dh_group_probe(&this->supported_dh_groups, mandatory_dh_groups) ||
!pts_meas_algo_update(hash_alg, &this->supported_algorithms) ||
!pts_dh_group_update(dh_group, &this->supported_dh_groups))
{
/**
* Described in header.
*/
-bool pts_dh_group_probe(pts_dh_group_t *dh_groups)
+bool pts_dh_group_probe(pts_dh_group_t *dh_groups, bool mandatory_dh_groups)
{
enumerator_t *enumerator;
diffie_hellman_group_t dh_group;
if (*dh_groups & PTS_DH_GROUP_IKE19)
{
+ /* mandatory PTS DH group is available */
return TRUE;
}
- else
+ if (*dh_groups == PTS_DH_GROUP_NONE)
+ {
+ DBG1(DBG_PTS, "no PTS DH group available");
+ return FALSE;
+ }
+ if (mandatory_dh_groups)
{
DBG1(DBG_PTS, format2, "mandatory", diffie_hellman_group_names,
ECP_256_BIT);
+ return FALSE;
}
- return FALSE;
+
+ /* at least one optional PTS DH group is available */
+ return TRUE;
}
/**
/**
* Probe available PTS Diffie-Hellman groups
*
- * @param dh_groups returns set of available DH groups
- * @return TRUE if mandatory DH groups are available
+ * @param dh_groups returns set of available DH groups
+ * @param mandatory_dh_groups if TRUE enforce mandatory PTS DH groups
+ * @return TRUE if mandatory DH groups are available
+ * or at least one optional DH group if
+ * mandatory_dh_groups is set to FALSE.
*/
-bool pts_dh_group_probe(pts_dh_group_t *dh_groups);
+bool pts_dh_group_probe(pts_dh_group_t *dh_groups, bool mandatory_dh_groups);
/**
* Update supported Diffie-Hellman groups according to configuration
--- /dev/null
+The roadwarriors <b>carol</b> and <b>dave</b> set up a connection each to gateway <b>moon</b>
+using EAP-TTLS authentication only with the gateway presenting a server certificate and
+the clients doing EAP-MD5 password-based authentication.
+In a next step the EAP-TNC protocol is used within the EAP-TTLS tunnel to determine the
+state of <b>carol</b>'s and <b>dave</b>'s operating system via the <b>TNCCS 2.0 </b>
+client-server interface compliant with <b>RFC 5793 PB-TNC</b>. The OS IMC and OS IMV pair
+is using the <b>IF-M 1.0</b> measurement protocol defined by <b>RFC 5792 PA-TNC</b> to
+exchange PA-TNC attributes.
+<p>
+<b>carol</b> sends information on her operating system consisting of the PA-TNC attributes
+<em>Product Information</em>, <em>String Version</em>, and <em>Device ID</em> up-front
+to the Attestation IMV, whereas <b>dave</b> must be prompted by the IMV to do so via an
+<em>Attribute Request</em> PA-TNC attribute. <b>dave</b> is instructed to do a reference
+measurement on all files in the <b>/bin</b> directory. <b>carol</b> is then prompted to
+measure a couple of individual files and the files in the <b>/bin</b> directory as
+well as to get metadata on the <b>/etc/tnc_confg</b> configuration file.
+<p>
+Since the Attestation IMV negotiates a Diffie-Hellman group for TPM-based measurements,
+the mandatory default being <b>ecp256</b>, with the strongswan.conf option
+<b>mandatory_dh_groups = no</b> no ECC support is required.
+<p>
+<b>carol</b> passes the health test and <b>dave</b> fails because IP forwarding is
+enabled. Based on these assessments which are communicated to the IMCs using the
+<em>Assessment Result</em> PA-TNC attribute, the clients are connected by gateway <b>moon</b>
+to the "rw-allow" and "rw-isolate" subnets, respectively.
+</p>
--- /dev/null
+carol::cat /var/log/daemon.log::PB-TNC access recommendation is 'Access Allowed'::YES
+carol::cat /var/log/daemon.log::EAP method EAP_TTLS succeeded, MSK established::YES
+carol::cat /var/log/daemon.log::authentication of 'moon.strongswan.org' with EAP successful::YES
+carol::cat /var/log/daemon.log::CHILD_SA home{1} established.*TS 192.168.0.100/32 === 10.1.0.0/28::YES
+dave:: cat /var/log/daemon.log::PB-TNC access recommendation is 'Quarantined'::YES
+dave:: cat /var/log/daemon.log::EAP method EAP_TTLS succeeded, MSK established::YES
+dave:: cat /var/log/daemon.log::authentication of 'moon.strongswan.org' with EAP successful::YES
+dave:: cat /var/log/daemon.log::CHILD_SA home{1} established.*TS 192.168.0.200/32 === 10.1.0.16/28::YES
+moon:: ipsec attest --session 2> /dev/null::Debian 7.2 x86_64.*carol@strongswan.org - allow::YES
+moon:: cat /var/log/daemon.log::added group membership 'allow'::YES
+moon:: cat /var/log/daemon.log::authentication of 'carol@strongswan.org' with EAP successful::YES
+moon:: ipsec attest --session 2> /dev/null::Debian 7.2 x86_64.*dave@strongswan.org - isolate::YES
+moon:: cat /var/log/daemon.log::added group membership 'isolate'::YES
+moon:: cat /var/log/daemon.log::authentication of 'dave@strongswan.org' with EAP successful::YES
+moon:: ipsec statusall 2> /dev/null::rw-allow.*10.1.0.0/28 === 192.168.0.100/32::YES
+moon:: ipsec statusall 2> /dev/null::rw-isolate.*10.1.0.16/28 === 192.168.0.200/32::YES
+carol::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
+carol::ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_req=1::NO
+dave:: ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_req=1::YES
+dave:: ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::NO
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+ charondebug="tnc 3, imc 3, pts 3"
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev2
+
+conn home
+ left=PH_IP_CAROL
+ leftid=carol@strongswan.org
+ leftauth=eap
+ leftfirewall=yes
+ right=PH_IP_MOON
+ rightid=@moon.strongswan.org
+ rightauth=any
+ rightsendcert=never
+ rightsubnet=10.1.0.0/16
+ auto=add
--- /dev/null
+# /etc/ipsec.secrets - strongSwan IPsec secrets file
+
+carol@strongswan.org : EAP "Ar3etTnp"
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl aes md5 sha1 sha2 hmac gmp pem pkcs1 random nonce x509 revocation stroke kernel-netlink socket-default eap-identity eap-md5 eap-ttls eap-tnc tnc-tnccs tnc-imc tnccs-20 updown
+ multiple_authentication=no
+ plugins {
+ eap-tnc {
+ protocol = tnccs-2.0
+ }
+ }
+}
+
+libimcv {
+ plugins {
+ imc-os {
+ push_info = yes
+ }
+ imc-attestation {
+ mandatory_dh_groups = no
+ }
+ }
+}
--- /dev/null
+#IMC configuration file for strongSwan client
+
+IMC "OS" /usr/local/lib/ipsec/imcvs/imc-os.so
+IMC "Attestation" /usr/local/lib/ipsec/imcvs/imc-attestation.so
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+ charondebug="tnc 3, imc 3, pts 3"
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev2
+
+conn home
+ left=PH_IP_DAVE
+ leftid=dave@strongswan.org
+ leftauth=eap
+ leftfirewall=yes
+ right=PH_IP_MOON
+ rightid=@moon.strongswan.org
+ rightauth=any
+ rightsendcert=never
+ rightsubnet=10.1.0.0/16
+ auto=add
--- /dev/null
+# /etc/ipsec.secrets - strongSwan IPsec secrets file
+
+dave@strongswan.org : EAP "W7R0g3do"
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl aes md5 sha1 sha2 hmac gmp pem pkcs1 random nonce x509 revocation stroke kernel-netlink socket-default eap-identity eap-md5 eap-ttls eap-tnc tnc-imc tnc-tnccs tnccs-20 updown
+ multiple_authentication=no
+ plugins {
+ eap-tnc {
+ protocol = tnccs-2.0
+ }
+ tnc-imc {
+ preferred_language = de
+ }
+ }
+}
+
+libimcv {
+ plugins {
+ imc-os {
+ push_info = no
+ }
+ imc-attestation {
+ mandatory_dh_groups = no
+ }
+ }
+}
--- /dev/null
+#IMC configuration file for strongSwan client
+
+IMC "OS" /usr/local/lib/ipsec/imcvs/imc-os.so
+IMC "Attestation" /usr/local/lib/ipsec/imcvs/imc-attestation.so
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+ charondebug="tnc 3, imv 3, pts 3"
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev2
+
+conn rw-allow
+ rightgroups=allow
+ leftsubnet=10.1.0.0/28
+ also=rw-eap
+ auto=add
+
+conn rw-isolate
+ rightgroups=isolate
+ leftsubnet=10.1.0.16/28
+ also=rw-eap
+ auto=add
+
+conn rw-eap
+ left=PH_IP_MOON
+ leftcert=moonCert.pem
+ leftid=@moon.strongswan.org
+ leftauth=eap-ttls
+ leftfirewall=yes
+ rightauth=eap-ttls
+ rightid=*@strongswan.org
+ rightsendcert=never
+ right=%any
--- /dev/null
+# /etc/ipsec.secrets - strongSwan IPsec secrets file
+
+: RSA moonKey.pem
+
+carol@strongswan.org : EAP "Ar3etTnp"
+dave@strongswan.org : EAP "W7R0g3do"
--- /dev/null
+/* Devices */
+
+INSERT INTO devices ( /* 1 */
+ value, product, created
+) VALUES (
+ 'aabbccddeeff11223344556677889900', 28, 1372330615
+);
+
+/* Groups Members */
+
+INSERT INTO groups_members (
+ group_id, device_id
+) VALUES (
+ 10, 1
+);
+
+INSERT INTO enforcements (
+ policy, group_id, max_age, rec_fail, rec_noresult
+) VALUES (
+ 3, 10, 0, 2, 2
+);
+
+INSERT INTO enforcements (
+ policy, group_id, max_age
+) VALUES (
+ 16, 2, 0
+);
+
+DELETE FROM enforcements WHERE id = 1;
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl aes md5 sha1 sha2 hmac gmp pem pkcs1 random nonce x509 revocation stroke kernel-netlink socket-default eap-identity eap-ttls eap-md5 eap-tnc tnc-imv tnc-tnccs tnccs-20 updown sqlite
+ multiple_authentication=no
+ plugins {
+ eap-ttls {
+ phase2_method = md5
+ phase2_piggyback = yes
+ phase2_tnc = yes
+ }
+ eap-tnc {
+ protocol = tnccs-2.0
+ }
+ }
+}
+
+libimcv {
+ database = sqlite:///etc/pts/config.db
+ policy_script = ipsec imv_policy_manager
+ plugins {
+ imv-attestation {
+ hash_algorithm = sha1
+ dh_group = modp2048
+ mandatory_dh_groups = no
+ }
+ }
+}
+
+attest {
+ load = random nonce openssl sqlite
+ database = sqlite:///etc/pts/config.db
+}
+
--- /dev/null
+#IMV configuration file for strongSwan client
+
+IMV "OS" /usr/local/lib/ipsec/imcvs/imv-os.so
+IMV "Attestation" /usr/local/lib/ipsec/imcvs/imv-attestation.so
--- /dev/null
+moon::ipsec stop
+carol::ipsec stop
+dave::ipsec stop
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+dave::iptables-restore < /etc/iptables.flush
+carol::echo 1 > /proc/sys/net/ipv4/ip_forward
+moon::rm /etc/pts/config.db
--- /dev/null
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
+carol::echo 0 > /proc/sys/net/ipv4/ip_forward
+dave::echo aabbccddeeff11223344556677889900 > /var/lib/dbus/machine-id
+moon::cd /usr/local/share/strongswan/templates/database/imv; cat tables.sql data.sql /etc/pts/data1.sql | sqlite3 /etc/pts/config.db
+moon::cat /etc/tnc_config
+carol::cat /etc/tnc_config
+dave::cat /etc/tnc_config
+moon::ipsec start
+dave::ipsec start
+carol::ipsec start
+dave::sleep 1
+dave::ipsec up home
+carol::ipsec up home
+carol::sleep 1
+moon::ipsec attest --sessions
+moon::ipsec attest --devices
--- /dev/null
+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice venus moon carol winnetou dave"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-v-m-c-w-d.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol dave"
+
+# Guest instances on which FreeRadius is started
+#
+RADIUSHOSTS=
+
projects / thirdparty / strongswan.git / commitdiff
