Limit new connections based on the number of jobs currently queued for
processing (see IKE_SA_INIT DROPPING).
.TP
+.BR charon.initiator_only " [no]"
+Causes charon daemon to ignore IKE initiation requests.
+.TP
.BR charon.install_routes " [yes]"
Install routes into a separate routing table for established IPsec tunnels
.TP
* Delay response messages?
*/
bool receive_delay_response;
+
+ /**
+ * Endpoint is allowed to act as an initiator only
+ */
+ bool initiator_only;
+
};
/**
if (message->get_request(message) &&
message->get_exchange_type(message) == IKE_SA_INIT)
{
- if (drop_ike_sa_init(this, message))
+ if (this->initiator_only || drop_ike_sa_init(this, message))
{
message->destroy(message);
return JOB_REQUEUE_DIRECT;
{
id = message->get_ike_sa_id(message);
if (id->get_responder_spi(id) == 0 &&
- drop_ike_sa_init(this, message))
+ (this->initiator_only || drop_ike_sa_init(this, message)))
{
message->destroy(message);
return JOB_REQUEUE_DIRECT;
"%s.receive_delay_request", TRUE, charon->name),
this->receive_delay_response = lib->settings->get_bool(lib->settings,
"%s.receive_delay_response", TRUE, charon->name),
+ this->initiator_only = lib->settings->get_bool(lib->settings,
+ "%s.initiator_only", FALSE, charon->name),
this->hasher = lib->crypto->create_hasher(lib->crypto, HASH_PREFERRED);
if (!this->hasher)
--- /dev/null
+The roadwarrior <b>dave</b> tries to set up a connection to roadwarrior <b>carol</b>
+but because <b>carol</b> has set the strongswan.conf option <b>initiator_only = yes</b>
+she ignores the repeated IKE requests sent by <b>dave</b>.
+<p/>
+After the failed connection attempt by <b>dave</b>, roadwarrior <b>carol</b> sets up a
+connection to gateway <b>moon</b>. The authentication is based on <b>X.509 certificates</b>.
+Upon the successful establishment of the IPsec tunnels, <b>leftfirewall=yes</b>
+automatically inserts iptables-based firewall rules that let pass the tunneled traffic.
+In order to test both tunnel and firewall, <b>carol</b> pings the client <b>alice</b> behind
+the gateway <b>moon</b>.
--- /dev/null
+dave::cat /var/log/daemon.log::establishing IKE_SA failed, peer not responding::YES
+carol::ipsec status 2> /dev/null::home.*ESTABLISHED.*carol@strongswan.org.*moon.strongswan.org::YES
+moon:: ipsec status 2> /dev/null::rw\[1]: ESTABLISHED.*moon.strongswan.org.*carol@strongswan.org::YES
+carol::ipsec status 2> /dev/null::home.*INSTALLED, TUNNEL::YES
+moon:: ipsec status 2> /dev/null::rw[{]1}.*INSTALLED, TUNNEL::YES
+carol::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
+moon::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
+moon::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev1
+
+conn home
+ left=PH_IP_CAROL
+ leftcert=carolCert.pem
+ leftid=carol@strongswan.org
+ leftfirewall=yes
+ right=PH_IP_MOON
+ rightid=@moon.strongswan.org
+ rightsubnet=10.1.0.0/16
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+
+ initiator_only = yes
+}
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev1
+
+conn peer
+ left=PH_IP_DAVE
+ leftcert=daveCert.pem
+ leftid=dave@strongswan.org
+ leftfirewall=yes
+ right=PH_IP_CAROL
+ rightid=carol@strongswan.org
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+
+ retransmit_timeout = 2
+ retransmit_base = 1.5
+ retransmit_tries = 3
+}
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekey=no
+ keyexchange=ikev1
+
+conn rw
+ left=PH_IP_MOON
+ leftcert=moonCert.pem
+ leftid=@moon.strongswan.org
+ leftsubnet=10.1.0.0/16
+ leftfirewall=yes
+ right=%any
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+}
--- /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
--- /dev/null
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
+moon::ipsec start
+carol::ipsec start
+dave::ipsec start
+carol::sleep 1
+dave::ipsec up peer
+carol::ipsec up home
--- /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 moon carol winnetou dave"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-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"
--- /dev/null
+The roadwarrior <b>dave</b> tries to set up a connection to roadwarrior <b>carol</b>
+but because <b>carol</b> has set the strongswan.conf option <b>initiator_only = yes</b>
+she ignores the repeated IKE requests sent by <b>dave</b>.
+<p/>
+After the failed connection attempt by <b>dave</b>, roadwarrior <b>carol</b> sets up a
+connection to gateway <b>moon</b>. The authentication is based on <b>X.509 certificates</b>.
+Upon the successful establishment of the IPsec tunnels, <b>leftfirewall=yes</b>
+automatically inserts iptables-based firewall rules that let pass the tunneled traffic.
+In order to test both tunnel and firewall, <b>carol</b> pings the client <b>alice</b> behind
+the gateway <b>moon</b>.
--- /dev/null
+dave::cat /var/log/daemon.log::establishing IKE_SA failed, peer not responding::YES
+carol::ipsec status 2> /dev/null::home.*ESTABLISHED.*carol@strongswan.org.*moon.strongswan.org::YES
+moon:: ipsec status 2> /dev/null::rw\[1]: ESTABLISHED.*moon.strongswan.org.*carol@strongswan.org::YES
+carol::ipsec status 2> /dev/null::home.*INSTALLED, TUNNEL::YES
+moon:: ipsec status 2> /dev/null::rw[{]1}.*INSTALLED, TUNNEL::YES
+carol::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
+moon::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
+moon::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev2
+
+conn home
+ left=PH_IP_CAROL
+ leftcert=carolCert.pem
+ leftid=carol@strongswan.org
+ leftfirewall=yes
+ right=PH_IP_MOON
+ rightid=@moon.strongswan.org
+ rightsubnet=10.1.0.0/16
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+
+ initiator_only = yes
+}
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekeymargin=3m
+ keyingtries=1
+ keyexchange=ikev2
+
+conn peer
+ left=PH_IP_DAVE
+ leftcert=daveCert.pem
+ leftid=dave@strongswan.org
+ leftfirewall=yes
+ right=PH_IP_CAROL
+ rightid=carol@strongswan.org
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+
+ retransmit_timeout = 2
+ retransmit_base = 1.5
+ retransmit_tries = 3
+}
--- /dev/null
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+ ikelifetime=60m
+ keylife=20m
+ rekey=no
+ keyexchange=ikev2
+
+conn rw
+ left=PH_IP_MOON
+ leftcert=moonCert.pem
+ leftid=@moon.strongswan.org
+ leftsubnet=10.1.0.0/16
+ leftfirewall=yes
+ right=%any
+ auto=add
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+ load = curl test-vectors aes des sha1 sha2 md5 pem pkcs1 pkcs8 gmp random nonce x509 revocation hmac xcbc cmac ctr ccm gcm stroke kernel-netlink socket-default updown
+}
--- /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
--- /dev/null
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
+moon::ipsec start
+carol::ipsec start
+dave::ipsec start
+carol::sleep 1
+dave::ipsec up peer
+carol::ipsec up home
--- /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 moon carol winnetou dave"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-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"