Openwrt

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Router: Openwrt | LEDE | Libre Mesh | qMp | RUT9XX

allgemein

Installation

Installation von dd-wrt

  • From DDwrt to OpenWrt:
# Enable SSH in services tab of ddwrt.
scp (winscp) openwrt-your-router-FACTORY.bin (factory not upgrade) to /tmp
ssh login to ddwrt, cd /tmp
mtd -f write openwrt-your-router-factory.bin linux
reboot
  • From Openwrt to DDwrt:
mtd write /tmp/factory-to-ddwrt.bin firmware

Befehle

Interfaces anzeigen

iwinfo

Anzeige der Clients die mit wlan verbunden sind

# wlan info
iwinfo wlan0 assoclist


# über dhcp vergabe
cat /tmp/dhcp.leases

for ip in $(arp | grep -v IP | awk '{print $1}'); do grep $ip /tmp/dhcp.leases; done

Probleme

opkg update - Failed to download the package list - opkg_download: Check your network settings and connectivity.

evt ipv6 probleme, weil zb. haupt netz es nicht zu läßt 


# mit folgendem testen
wget http://downloads.openwrt.org/releases/18.06.5/targets/ar71xx/tiny/packages/Packages.gz

# Lösung: ipv6 ausschalten
# folgendes alternativ zu /etc/config/network per hand bearbeiten
uci set network.wan6.disabled="1"
uci commit network
service network reload

wlan client => wired gateway

wireless

# checken was geht
iwinfo wlan0-ap txpower
# checken was eingestellt ist
uci show wireless.radio0.txpower
# bzw. txpower
iwinfo

openvpn

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)

ssh root@192.168.1.1
opkg update
opkg install openvpn-openssl


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

riseup openvpn client auf den openwrt einrichten

Zertifikat

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(zum testen) openvpn starten mit Passwortabfrage start befehl 

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

openvpn starten mit Passwortdatei

/etc/openvpn/riseup_auth.txt 

user
secret

(zum testen) start befehl 

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

openvpn starten mit configfile

/etc/openvpn/riseup2.ovpn 

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


(zum testen) start befehl 

openvpn /etc/openvpn/riseup2.ovpn

openvpn starten mit /etc/init.d/openvpn

/etc/config/openvpn 

config openvpn cryptn_vpn
        # Set to 1 to enable this instance:
        option enable 1

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


(zum testen) start befehl 

/etc/init.d/openvpn start
/etc/init.d/openvpn restart
/etc/init.d/openvpn stop

Netzwerkeinstellungen auf openwrt für openvpn

/etc/config/network 

# ....
config interface 'ncvpnif'
        option proto 'dhcp'
        option ifname 'tun0'
        option hostname 'ncvpnhostname'

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

Firewall

/etc/config/firewall 

# ....
config rule
        option name 'Allow-OpenVPN-Inbound'
        option target 'ACCEPT'
        option src '*'
        option proto 'udp'
        option dest_port '1194'

config zone
        option name 'ncvpnzone'
        option forward 'REJECT'
        option output 'ACCEPT'
        option input 'REJECT'
        option masq '1'
        option mtu_fix '1'
        option network 'ncvpnif'

config forwarding
        option dest 'ncvpnzone'
        option src 'lan'

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


check openvpn cronjob

* * * * * /etc/config/nccheckopenvpn.sh

nccheckopenvpn.sh 

#!/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

Dienste aktivieren

 /etc/init.d/openvpn enable
/etc/init.d/firewall enable

Überflüssiges deinstallieren

# 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
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