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--- openvpn [2018/02/12 16:59] – skipidar
+++ openvpn [2020/12/27 20:35] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== OpenVpn ======
-=== Domain Joining OpenVpn ===
+==== Joining OpenVpn to a Microsoft Active Directory ====
 To domain join the OpenVpn server do the following:
-Configure the Server to use LDAP:
+Configure the Server to use LDAP. Requiring the Following Active Directory Structure.
+  * basic.local
+    * basic
+      * Users -> Admin
+      * Groups -> OpenVpnUsers
 |Bind DN: |CN=Admin, OU=Users, OU=basic,  DC=basic, DC=local|
@@ Line 12: / Line 20: @@
 |Base DN for User Entities:|OU=Users, OU=basic,  DC=basic, DC=local|
 |Username Attribute:|sAMAccountName|
+Login to the CLient using, without having the domain as prefix:
+ACHTUNG: having special characters like "." makes OpenVPN escape them, so that they are not accepted. Check **sAMAccountName=first\\2euser** below
+<code>
+-02-12 16:17:42+0000 [-] LDAP invalid credentials on ldap://21.1.2.39/: {'info': '80090308: LdapErr: DSID-0C09042F, comment: AcceptSecurityContext error, data 52e, v2580', 'desc': 'Invalid credentials'} (facility='user_bind on u'CN=first.user,OU=Users,OU=basic,DC=basic,DC=local' via search (u'OU=Users, OU=basic,  DC=basic, DC=local', 2, '(sAMAccountName=first\\2euser)')') (user='first.user')
+</code>
+|Login:|Admin|
+|Password:|<YOUTPASSWORD|
+|Additional LDAP Requirement: (Advanced)|memberOf=CN=OpenVpnUsers, OU=Groups, OU=basic, DC=basic, DC=local|
@@ Line 27: / Line 47: @@
 LDAP invalid credentials on ldap://21.1.2.39/: {'info': '80090308: LdapErr: DSID-0C09042F, comment: AcceptSecurityContext error, data 52e, v2580', 'desc': 'Invalid credentials'} (facility='user_bind on u'CN=s000001,OU=Users,OU=basic,DC=basic,DC=local' via search (u'OU=Users, OU=basic,  DC=basic, DC=local', 2, '(sAMAccountName=s000001)')') (user='s000001')
 </code>
+==== Configs ====
+The key "vpn.server.routing.private_network.0" is important to define which CIDR block will be routed through the VPN server.
+<code>
+$ cat /usr/local/openvpn_as/etc/config.json
+{
+  "Default": {
+ "admin_ui.https.ip_address": "eth0",
+  "admin_ui.https.port": "943",
+  "aui.eula_version": "2",
+  "auth.ldap.0.add_req": "memberOf=CN=OpenVpnUsers, OU=Groups, OU=basic, DC=basic, DC=local",
+  "auth.ldap.0.bind_dn": "CN=s000001, OU=Users, OU=basic, DC=basic, DC=local",
+  "auth.ldap.0.bind_pw": "komumisa76!",
+  "auth.ldap.0.name": "My LDAP servers",
+  "auth.ldap.0.server.0.host": "21.1.3.174",
+  "auth.ldap.0.server.1.host": "21.1.2.35",
+  "auth.ldap.0.ssl_verify": "never",
+  "auth.ldap.0.timeout": "4",
+  "auth.ldap.0.uname_attr": "sAMAccountName",
+  "auth.ldap.0.use_ssl": "never",
+  "auth.ldap.0.users_base_dn": "OU=Users, OU=basic, DC=basic, DC=local",
+  "auth.module.type": "ldap",
+  "auth.pam.0.service": "openvpnas",
+  "auth.radius.0.acct_enable": "false",
+  "auth.radius.0.name": "My Radius servers",
+  "cs.cws_proto_v2": "true",
+  "cs.https.ip_address": "eth0",
+  "cs.https.port": "943",
+  "cs.prof_sign_web": "true",
+  "host.name": "34.245.33.33",
+  "sa.initial_run_groups.0": "web_group",
+  "sa.initial_run_groups.1": "openvpn_group",
+  "vpn.client.basic": "false",
+  "vpn.client.config_text": "cipher AES-128-CBC",
+  "vpn.client.routing.inter_client": "false",
+  "vpn.client.routing.reroute_dns": "false",
+  "vpn.client.routing.reroute_gw": "false",
+  "vpn.daemon.0.client.netmask_bits": "20",
+  "vpn.daemon.0.client.network": "172.27.224.0",
+  "vpn.daemon.0.listen.ip_address": "eth0",
+  "vpn.daemon.0.listen.port": "443",
+  "vpn.daemon.0.listen.protocol": "tcp",
+  "vpn.daemon.0.server.ip_address": "eth0",
+  "vpn.server.config_text": "cipher AES-128-CBC",
+  "vpn.server.daemon.enable": "true",
+  "vpn.server.daemon.tcp.n_daemons": "1",
+  "vpn.server.daemon.tcp.port": "443",
+  "vpn.server.daemon.udp.n_daemons": "1",
+  "vpn.server.daemon.udp.port": "1194",
+  "vpn.server.group_pool.0": "172.27.240.0/20",
+  "vpn.server.nat.masquerade": "true",
+  "vpn.server.port_share.enable": "true",
+  "vpn.server.port_share.ip_address": "1.2.3.4",
+  "vpn.server.port_share.port": "1234",
+  "vpn.server.port_share.service": "admin+client",
+  "vpn.server.routing.private_access": "nat",
+  "vpn.tls_refresh.do_reauth": "true",
+  "vpn.tls_refresh.interval": "360",
+  "vpn.server.routing.private_network.0": "21.1.0.0/16"
+  },
+  "_INTERNAL": {
+    "run_api.active_profile": "Default",
+    "webui.edit_profile": "Default"
+  }
+}
+</code>
+Alternative via API
+<code>
+/usr/local/openvpn_as/scripts/bash sacli ConfigQuery
+</code>
+==== API =====
+Configure via Command line:
+<code>
+cd /usr/local/openvpn_as/scripts/
+bash sacli --user __DEFAULT__ --key "vpn.daemon.0.server.ip_address" --value "all" ConfigPut
+bash sacli --user __DEFAULT__ --key "vpn.daemon.0.listen.ip_address" --value "all" ConfigPut
+bash sacli --user __DEFAULT__ --key "vpn.server.daemon.udp.port" --value "1194" ConfigPut
+bash sacli --user __DEFAULT__ --key "vpn.server.daemon.tcp.port" --value "443" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.add_req" --value "memberOf=CN=OpenVpnUsers, OU=Groups, OU=basic, DC=basic, DC=local" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.bind_dn" --value "CN=",{ "Ref" : "ADBindUser" },", OU=Users, OU=basic, DC=basic, DC=local" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.bind_pw" --value "",{ "Ref" : "ADBindUserPassword" },"" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.name" --value "My LDAP servers" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.server.0.host" --value "",{ "Ref" : "ADServerOne" },"" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.server.1.host" --value "",{ "Ref" : "ADServerTwo" },"" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.ssl_verify" --value "never" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.timeout" --value "4" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.uname_attr" --value "sAMAccountName" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.use_ssl" --value "never" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.ldap.0.users_base_dn" --value "OU=Users, OU=basic, DC=basic, DC=local" ConfigPut
+bash sacli --user __DEFAULT__ --key "auth.module.type" --value "ldap" ConfigPut
+bash sacli --user __DEFAULT__ --key "vpn.server.routing.private_network.0" --value "21.1.0.0/16" ConfigPut
+# apply the configs to the server
+bash sacli --user __DEFAULT__ start
+# echo configs
+bash sacli ConfigQuery
+</code>
+==== Deploying via Cloudformation ====
+Use that template.
+The given AMI is suitable for the region us-east-1, Virginia.
+Depending on the region you will have to adopt the AMI.
+  * https://www.mikeapted.com/aws/2017/04/05/personal-vpn-aws/
+  * https://gist.github.com/skipidar/81e17478d55f014cc45cfc785ef9730b
+==== Configuring Acer Router ====
+{{https://lh3.googleusercontent.com/-N08V2NIa8uE/WxMIgRysspI/AAAAAAAAAKU/CHdbMvVRgf0Fz9J1-zd02y1JVR89xsoggCHMYCw/s0/2018-06-02_23-13-39.png}}
+  * Check the right protocol, here UDP. It must be open among on the server side
+Here we can see, that the router is using the UDP port and protocol, as configured on the server side:
+{{https://lh3.googleusercontent.com/-K33EMTIPEy4/WxMJEicisyI/AAAAAAAAAKc/z_ck0YQIiV43y5fZiGdxLzidfGu59eNGQCHMYCw/s0/2018-06-02_23-16-05.png}}