Quelltext der Seite Openwrt

[[LEDE]]

= allgemein =
==Befehle==
===Interfaces anzeigen===
 iwinfo

=== Anzeige der Clients die mit wlan verbunden sind ===
 iwinfo wlan0 assoclist


= wlan client => wired gateway = 

* http://192.168.1.1/cgi-bin/luci/admin/network/wireless => scan, wlan netz auswählen und hinzufügen
* OpenWrt deaktivieren (falls aktiv und mensch es will)
* Probleme (gab es bei CPE210, nicht aber CPE510)
** der computer client hat kein dns auflösung (ping 8.8.8.8 funzt aber)
* http://192.168.1.1/cgi-bin/luci/admin/network/dhcp
** DNS forwardings => DNS Ip eintragen (z.B. google 8.8.8.8)

== wireless == 

<source lang=bash>
# checken was geht
iwinfo wlan0-ap txpower
# checken was eingestellt ist
uci show wireless.radio0.txpower
# bzw. txpower
iwinfo
</source>

=VPN =



==Anleitungen==
 https://blog.doenselmann.com/openvpn-server-auf-openwrt-router-betreiben/
 http://www.kammerath.net/openwrt-mit-openvpn-client.html
 https://www.portunity.de/access/wiki/OpenVPN-Tunnel_(IPv4)_auf_einem_OpenWRT_Router_einrichten_(Anleitung)

<source lang=bash>
ssh root@192.168.1.1
opkg update
opkg install openvpn-openssl
</source>


Alternative zur folgenden config über gui mit paket luci-app-openvpn

=== riseup openvpn client auf den openwrt einrichten ===

==== Zertifikat ====
* /etc/openvpn/[https://riseup.net/security/network-security/riseup-ca/RiseupCA.pem RiseupCA.pem]
<source lang=bash>
-----BEGIN CERTIFICATE-----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2s0mDD5zhRpheNW4gFBtGpqHiRXv7WJW612aaXzKQQoIq2loGNvOpnyBPKL3jjUT
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BAgwBgEB/wIBADAPBgNVHQ8BAf8EBQMDBwQAMB0GA1UdDgQWBBTGek7ebtq2Ibm+
2K6je1IMobvEkzANBgkqhkiG9w0BAQsFAAOCAgEAO2B3jnL+8LeoRkc282qUpHyu
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Gh78OCHEdGAeOTYHXamiuA9Z7wMuncPjP476gSW2kfWTdxV25ad4tT5dA5d42xDm
YE2UKzHeB9amOmvyh08LPD0idT5oROCIHsHBhQC9oltJXO5j6GyHRg88C1inyv6R
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ead3ZpMO+XrpazDFGtdPTQdi5EIYmr2RL9eTeQbVPwMB9TgFpBXP+iYIuTpNo8jn
8zS4EcPRmz6PQJVK4zkHczfvquyU9RuOwEgb8qN4tSNxF0Z94uSVUoXCG9WZLf8q
MfsGesYiR/qLnLn3MfAyWm3OVOUvGzczDE2T8VvY7rXc2+8ra5aK0TNAgEz9ey6D
/dGzM1JCCe1A08s+2+eRX//pmqmOCoGrY7zwIVS2T249h6iIMM9yT0C3ZXRoTnVN
osyidOkVuQr0YK6shJ0WaK4F1MktdjOZKPoIc9QLw+TrSU2hfyla36T0bNWMC/TJ
YtxDI+d1jIFZ7zMmts4=
-----END CERTIFICATE-----
</source>


(zum testen) openvpn starten mit Passwortabfrage
'''start befehl'''
<source lang=bash>
openvpn --client --dev tun --auth-user-pass --remote vpn.riseup.net 1194 --keysize 256 --auth SHA256 --cipher AES-256-CBC --ca /etc/openvpn/RiseupCA.pem
</source>

==== openvpn starten mit Passwortdatei ====

/etc/openvpn/riseup_auth.txt  
<source lang=bash>
user
secret
</source>

(zum testen)  '''start befehl'''
<source lang=bash>
openvpn --client --dev tun --auth-user-pass /etc/openvpn/riseup_auth.txt  --remote vpn.riseup.net 1194 --keysize 256 --auth SHA256 --cipher AES-256-CBC --ca /etc/openvpn/RiseupCA.pem
</source>

==== openvpn starten mit configfile ====

/etc/openvpn/riseup2.ovpn
<source lang=bash>
client
dev tun
auth-user-pass /etc/openvpn/riseup_auth.txt
remote vpn.riseup.net 1194
keysize 256
auth SHA256
cipher AES-256-CBC
ca /etc/openvpn/RiseupCA.pem
#
auth-nocache
#
remote-cert-tls server
script-security 2
persist-tun
persist-key
#route-noexec
#route-up /etc/openvpn/ruvpnrouteadd.sh


# logging
#log-append     /var/log/openvpn.log
#log     /var/log/openvpn.log
#verb 4
</source>


(zum testen)  '''start befehl'''
<source lang=bash>
openvpn /etc/openvpn/riseup2.ovpn
</source>

==== openvpn starten mit /etc/init.d/openvpn ====


'''/etc/config/openvpn'''
<source lang=bash>
config openvpn cryptn_vpn
        # Set to 1 to enable this instance:
        option enable 1

        # Include OpenVPN configuration
        option config /etc/openvpn/riseup2.ovpn
</source>


(zum testen) '''start befehl'''
<source lang=bash>
/etc/init.d/openvpn start
/etc/init.d/openvpn restart
/etc/init.d/openvpn stop
</source>

=== Netzwerkeinstellungen auf openwrt für openvpn ===
'''/etc/config/network'''
<source lang=bash>
# ....
config interface 'ncvpn'
        option proto 'dhcp'
        option ifname 'tun0'
        option hostname 'LEde'

</source>

(zum testen)  ''' start befehle '''
/etc/init.d/network restart

=== Firewall ===
'''/etc/config/firewall'''
<source lang=bash>
# ....
config rule
        option name 'Allow-OpenVPN-Inbound'
        option target 'ACCEPT'
        option src '*'
        option proto 'udp'
        option dest_port '1194'

config zone
        option name 'newzone'
        option forward 'REJECT'
        option output 'ACCEPT'
        option input 'REJECT'
        option masq '1'
        option mtu_fix '1'
        option network 'ncvpn'

config forwarding
        option dest 'newzone'
        option src 'lan'
</source>

(zum testen)  ''' start befehle '''
/etc/init.d/firewall restart


=== check openvpn cronjob ===
<source lang="bash">
* * * * * /etc/config/nccheckopenvpn.sh
</source>

nccheckopenvpn.sh
<source lang="bash">
#!/bin/sh
DEST="8.8.8.8"
DATE=$(date +%Y-%m-%d_%H:%M:%S)
if ! [ $(ping -q -c 1 ${DEST} 2>&1 | grep "1 packets received" | sed "s/.*\(1\) packets received.*/\1/")   ]; then
    echo "${DATE} FAIL ERROR Not alive ${DEST} , restarting VPNC" >> /etc/config/nc_vpnuptime.log
    /etc/init.d/openvpn stop ;  /etc/init.d/openvpn start
else
    echo "${DATE} Alive ${DEST}" >> /etc/config/nc_vpnuptime.log
fi

</source>

=== Dienste aktivieren ===
<source lang=bash>
 /etc/init.d/openvpn enable
/etc/init.d/firewall enable

</source>

=== Überflüssiges deinstallieren ===

<source lang=bash>
# evt. falsche reihenfolge, dann mehrmals ausführen
opkg remove luci luci-app-firewall luci-base  luci-lib-ip luci-lib-jsonc luci-lib-nixio luci-mod-admin-full luci-proto-ipv6 luci-proto-ppp luci-theme-bootstrap ppp ppp-mod-pppoe

</source>