Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- openvpn [23/08/2017 - 15:11] – thommie
+++ openvpn [16/10/2018 - 11:33] – [Inhalte kontrollieren] thommie3
@@ Zeile 1: / Zeile 1: @@
+https://community.openvpn.net/openvpn/wiki/GettingStartedwithOVPN
 ====== Server-Konfiguration ======
-**–verify-x509-name name type** Accept connections only if a host's X.509 name is equal to **name.** The remote host must also pass all other tests of verification.
+''sources for configuration: # [[http://sarwiki.informatik.hu-berlin.de/OpenVPN_|http://sarwiki.informatik.hu-berlin.de/OpenVPN_]](deutsch) # [[http://www.online--tutorials.net/security/openvpn-tutorial/|http://www.online--tutorials.net/security/openvpn-tutorial/]] ''
+''### BASICS ''
+''mode server ''
+''# bridged vpn with client IP range ''
+''server-bridge 192.168.72.1 255.255.255.0 192.168.72.61 192.168.72.100 ''
+''# Protocol/port proto udp port 1194 ### Type of operation ''
+''# operation with PKI tls-server ''
+''# instead for using a symmetric key ''
+''secret /etc/openvpn/server_static.key ''
+''# for vpn with shared key ''
+''tls-auth xxx 1 # Device type dev tap0 ''
+''# receive connection request on this local adress only '' \\
+''# if not defined, use all interfaces ''
+''local 192.168.172.1 ''
+''# topology and network topology\\
+subnet ''
+''# make IPs persistant\\
+ifconfig-pool-persist ipp.txt ''
+''# clients can see each other\\
+client-to-client ''
+''# see [[http://winaero.com/blog/speed-up-openvpn-and-get-faster-speed-over-its-channel/|http://winaero.com/blog/speed-up-openvpn-and-get-faster-speed-over-its-channel/]]\\
+sndbuf 393216\\
+rcvbuf 393216 ''
+''## PKI - certificates and keys, directory of cert/key\\
+cd /etc/openvpn ''
+''## Root CA which signed openvpn server and client certs\\
+ca /etc/easyrsa-pki/ca.crt\\
+## cert of openvpn server\\
+cert /etc/openvpn/locutus.netzwissen.local.crt '' \\
+''## key of server\\
+key /etc/openvpn/locutus.netzwissen.local.key\\
+# diffie hellman parameter\\
+# create with: openssl genpkey -genparam -algorithm DH -out /etc/openvpn/dh2014.pem\\
+dh /etc/easyrsa-pki/dh.pem ''
+''# certificate revocation list, should be copied from CA\\
+crl-verify /etc/openvpn/crl.pem ''
+''# Verification of certs\\
+# Details: [[https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage|https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage]]\\
+# old method (Name/name-prefix from CN field)\\
+# verify-x509-name locutus.netzwissen.local name ''
+''# new method from RFC3280: type of certificate must be client\\
+remote-cert-eku "TLS Web Client Authentication" ''
+''# Cipher algorithm\\
+cipher AES-256-CBC\\
+# HMAC Authentication\\
+auth SHA256 ''
+''# tunnel compression\\
+comp-lzo ''
+''# hardening. Beware: can exclude pre-2.3.3 clients\\
+# tls-version-min 1.2 ''
+''## pushed configs for clients for routing & dns\\
+## redirect all traffic to VPN\\
+## push "redirect-gateway def1" push "route 192.168.72.0 255.255.255.0 172.168.72.1"\\
+push "dhcp-option DOMAIN netzwissen.local"\\
+push "dhcp-option DNS 192.168.72.1"\\
+push "dhcp-option WINS 192.168.72.1" ''
+''# [[http://winaero.com/blog/speed-up-openvpn-and-get-faster-speed-over-its-channel/|http://winaero.com/blog/speed-up-openvpn-and-get-faster-speed-over-its-channel/]]\\
+push "sndbuf 393216"\\
+push "rcvbuf 393216" ''
+''# will not work with –ifconfig-pool-persist\\
+# duplicate-cn # permissions after connect\\
+user nobody\\
+group nogroup ''
+''# dont re-read keys after –ping-restart\\
+persist-key ''
+''# dont restart tun after –ping-restart\\
+persist-tun ''
+''### LOGGING\\
+log /var/log/openvpn.log ''
+''# Status info\\
+status /var/log/openvpn-status.log 20\\
+\\
+# dont repeat messages so often\\
+mute 20 ''
-Which X.509 name is compared to **name** depends on the setting of type. **type** can be "subject" to match the complete subject DN (default), "name" to match a subject RDN or "name-prefix" to match a subject RDN prefix. Which RDN is verified as name depends on the **–x509-username-field** option. But it defaults to the common name (CN), e.g. a certificate with a subject DN "C=KG, ST=NA, L=Bishkek, CN=Server-1" would be matched by:
+''# Log-Levels: 0 no logging, 4 standard, 5 + 6 debugging, 9 max\\
+verb 6 ''
-**–verify-x509-name 'C=KG, ST=NA, L=Bishkek, CN=Server-1'** and **–verify-x509-name Server-1 name** or you could use **–verify-x509-name Server- name-prefix** if you want a client to only accept connections to "Server-1", "Server-2", etc.
+''# Daemon-Mode: write to syslog - activate after the configuration finished\\
+daemon ''
-**–verify-x509-name** is a useful replacement for the **–tls-verify** option to verify the remote host, because **–verify-x509-name** works in a **–chroot** environment without any dependencies.
+''# Management console\\
+management localhost 7505 ''
-Using a name prefix is a useful alternative to managing a CRL (Certificate Revocation List) on the client, since it allows the client to refuse all certificates except for those associated with designated servers.
-**NOTE:** Test against a name prefix only when you are using OpenVPN with a custom CA certificate that is under your control. Never use this option with type "name-prefix" when your client certificates are signed by a third party, such as a commercial web CA
 ====== Management Console ======
 Die Management Konsole läuft auf localhost und ist über P. 7505 erreichbar.
-<code >
+''root@server6:/etc/openvpn/staticclients# telnet localhost 7505 ''
- root@server6:/etc/openvpn/staticclients# telnet localhost 7505
-</code>
 Beenden mit quit.
-<code >
+'' INFO:OpenVPN Management Interface Version 1 -- type 'help' for more info help Management Interface for OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Feb 2 2016 Commands: auth-retry t : Auth failure retry mode (none,interact,nointeract). bytecount n : Show bytes in/out, update every n secs (0=off). echo [on|off] [N|all] : Like log, but only show messages in echo buffer. exit|quit : Close management session. forget-passwords : Forget passwords entered so far. help : Print this message. hold [on|off|release] : Set/show hold flag to on/off state, or release current hold and start tunnel. kill cn : Kill the client instance(s) having common name cn. kill IP:port : Kill the client instance connecting from IP:port. load-stats : Show glsobal server load stats. log [on|off] [N|all] : Turn on/off realtime log display + show last N lines or 'all' for entire history. mute [n] : Set log mute level to n, or show level if n is absent. needok type action : Enter confirmation for NEED-OK request of 'type', where action = 'ok' or 'cancel'. needstr type action : Enter confirmation for NEED-STR request of 'type', where action is reply string. net : (Windows only) Show network info and routing table. password type p : Enter password p for a queried OpenVPN password. remote type [host port] : Override remote directive, type=ACCEPT|MOD|SKIP. proxy type [host port flags] : Enter dynamic proxy server info. pid : Show process ID of the current OpenVPN process. pkcs11-id-count : Get number of available PKCS#11 identities. pkcs11-id-get index : Get PKCS#11 identity at index. client-auth CID KID : Authenticate client-id/key-id CID/KID (MULTILINE) client-auth-nt CID KID : Authenticate client-id/key-id CID/KID client-deny CID KID R [CR] : Deny auth client-id/key-id CID/KID with log reason text R and optional client reason text CR client-kill CID [M] : Kill client instance CID with message M (def=RESTART) env-filter [level] : Set env-var filter level client-pf CID : Define packet filter for client CID (MULTILINE) rsa-sig : Enter an RSA signature in response to >RSA_SIGN challenge Enter signature base64 on subsequent lines followed by END signal s : Send signal s to daemon, s = SIGHUP|SIGTERM|SIGUSR1|SIGUSR2. state [on|off] [N|all] : Like log, but show state history. status [n] : Show current daemon status info using format #n. test n : Produce n lines of output for testing/debugging. username type u : Enter username u for a queried OpenVPN username. verb [n] : Set log verbosity level to n, or show if n is absent. version : Show current version number. ''
-INFO:OpenVPN Management Interface Version 1 -- type 'help' for more info
-help
-Management Interface for OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Feb  2 2016
-Commands:
-auth-retry t           : Auth failure retry mode (none,interact,nointeract).
-bytecount n            : Show bytes in/out, update every n secs (0=off).
-echo [on|off] [N|all]  : Like log, but only show messages in echo buffer.
-exit|quit              : Close management session.
-forget-passwords       : Forget passwords entered so far.
-help                   : Print this message.
-hold [on|off|release]  : Set/show hold flag to on/off state, or
-                         release current hold and start tunnel.
-kill cn                : Kill the client instance(s) having common name cn.
-kill IP:port           : Kill the client instance connecting from IP:port.
-load-stats             : Show glsobal server load stats.
-log [on|off] [N|all]   : Turn on/off realtime log display
-                         + show last N lines or 'all' for entire history.
-mute [n]               : Set log mute level to n, or show level if n is absent.
-needok type action     : Enter confirmation for NEED-OK request of 'type',
-                         where action = 'ok' or 'cancel'.
-needstr type action    : Enter confirmation for NEED-STR request of 'type',
-                         where action is reply string.
-net                    : (Windows only) Show network info and routing table.
-password type p        : Enter password p for a queried OpenVPN password.
-remote type [host port] : Override remote directive, type=ACCEPT|MOD|SKIP.
-proxy type [host port flags] : Enter dynamic proxy server info.
-pid                    : Show process ID of the current OpenVPN process.
-pkcs11-id-count        : Get number of available PKCS#11 identities.
-pkcs11-id-get index    : Get PKCS#11 identity at index.
-client-auth CID KID    : Authenticate client-id/key-id CID/KID (MULTILINE)
-client-auth-nt CID KID : Authenticate client-id/key-id CID/KID
-client-deny CID KID R [CR] : Deny auth client-id/key-id CID/KID with log reason
-                             text R and optional client reason text CR
-client-kill CID [M]    : Kill client instance CID with message M (def=RESTART)
-env-filter [level]     : Set env-var filter level
-client-pf CID          : Define packet filter for client CID (MULTILINE)
-rsa-sig                : Enter an RSA signature in response to>RSA_SIGN challenge
-                         Enter signature base64 on subsequent lines followed by END
-signal s               : Send signal s to daemon,
-                         s = SIGHUP|SIGTERM|SIGUSR1|SIGUSR2.
-state [on|off] [N|all] : Like log, but show state history.
-status [n]             : Show current daemon status info using format #n.
-test n                 : Produce n lines of output for testing/debugging.
-username type u        : Enter username u for a queried OpenVPN username.
-verb [n]               : Set log verbosity level to n, or show if n is absent.
-version                : Show current version number.
-</code>
 ====== Debugging auf OpenVPN Client Seite (Linux) ======
-<code >
+''journalctl -fu NetworkManager ''
- journalctl -fu NetworkManager
-</code>
 ====== Client IPs fest zuweisen ======
 In die *.conf kommt eine neue Direktive:
-<code >
+''client-config-dir /etc/openvpn/staticclients ''
- client-config-dir /etc/openvpn/staticclients
-</code>
 In diesem Verzeichnis für jeden Client einen Datei openvpn_dvsdnet_[name] legen. Diese enthält die IP Adresse und die Netzmaske des Clients:
-<code >
+'' ifconfig-push 192.168.50.16 255.255.255.0 ''
- ifconfig-push 192.168.50.16 255.255.255.0
-</code>
 OpenVPN liest diese Datei beim Connect zusätzlich ein, aber DNS und Gateway kommen weiterhin über die zentralen push Kommandos. Ggf kann man auch ein Client-spezifisches Push anhängen, siehe dazu [[http://michlstechblog.info/blog/openvpn-set-a-static-ip-address-for-a-client/|http://michlstechblog.info/blog/openvpn-set-a-static-ip-address-for-a-client/]]
@@ Zeile 97: / Zeile 147: @@
 ====== EASYRSA: CA einrichten ======
-<code >
+''./easyrsa init-pki ./easyrsa build-ca ''
-./easyrsa init-pki
-./easyrsa build-ca
-</code>
 DH erzeugen
-<code >
+'' ./easyrsa gen-dh ''
- ./easyrsa gen-dh
+====== EASYRSA: Zertifikate erzeugen ======
-</code>
-====== Zertifikate erzeugen ======
 Signing Request (CSR) erzeugen, mit **nopass** = Key **ohne** Passwort
-<code >
-./easyrsa gen-req EntityName
-./easyrsa gen-req EntityName nopass
+ ''./easyrsa gen-req EntityName ./easyrsa gen-req EntityName nopass ''
-</code>
 danach signieren mit
-<code >
+'' ./easyrsa sign-req server EntityName ./easyrsa sign-req client EntityName ''
-./easyrsa sign-req server EntityName
-./easyrsa sign-req client EntityName
-</code>
 //server// und //client// bestimmt, ob es ein Server oder Client Zertifikat ist.
-===== Achtung bei OpenVPN =====
-Der Client sollte den im OpenVPN Zertifikat angegebenen Common Name prüfen. Server prüft seinerseits den Zertifikatstyp des Clients (RFC3280):
+**Achtung bei OpenVPN**: der Client sollte den im OpenVPN Zertifikat angegebenen Common Name prüfen. Server prüft seinerseits den Zertifikatstyp des Clients (RFC3280):
-<code >
+ '' # Verification of certs # Details: https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage # old method (Name/name-prefix from CN field) # verify-x509-name locutus.netzwissen.local name # new method from RFC3280: type of certificate must be client remote-cert-eku "TLS Web Client Authentication" ''
-# Verification of certs
+====== EASYRSA: Zertifikate zurückziehen ======
-# Details: https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage
-# old method (Name/name-prefix from CN field)
-# verify-x509-name locutus.netzwissen.local name
-# new method from RFC3280: type of certificate must be client
-remote-cert-eku "TLS Web Client Authentication"
-</code>
-====== Zertifikate zurückziehen ======
+''./easyrsa revoke server EntityName ''
-<code >
+Danach mit easyrsa gen-crl die zurückgezogenen zertifikate in die crl aufnehmen.
-./easyrsa revoke server EntityName
-</code>
-Danachmit easyrsa gen-crl die zurückgezogenen zertifikate in die crl aufnehmen.
 pki/index.txt zeigt, welche Zertifikate zurückkgezogen wurden.
@@ Zeile 152: / Zeile 178: @@
 ====== Inhalte kontrollieren ======
+**Zertifikat**
+ ''openssl x509 -in pki/issued/openvpn.dvsdnet.local.crt -text -noout ''
 **CSR**
-<code >
-openssl req -in www2.netzwissen.de.csr -text -noout
-</code>
-**Zertifikat**
+''openssl req -in www2.netzwissen.de.csr -text -noout ''
-<code >
-openssl x509 -in certificate.crt -text -noout
-</code>