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Ratbert Setup

Nach der erfolgreichen Wiederbelebung von Ratbert konnte der Ersatzrouter Wormbert wieder im Schrank verschwinden. Was dazu alles nötig war sei im Folgenden hier dokumentiert.


Debricking

Von Lateinich debricere - der Verziegelsteinigung entziehen.... oder so.. Da der Bootloader noch vollkommen intakt war, gab es bei der Wiederherstellung von einer lauffähigen OpenWRT Firmware keine größeren Hindernisse zu überwinden. Mithilfe eines eingelöteten Pinheaders lässt sich die serielle Schnittstelle von Ratbert nun leicht mit einer USB UART bridge benutzen. Die dazu nötigen Schritte sind unter :http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd und besonders in dem Log unter :http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd/flashlog zu finden.

Pakete

Durch geschickte Benutzung des Paketmanagers opkg hat Astro folgende Pakete zur Menge der Installierten gemacht:

aiccu avahi-daemon base-files base-files-network busybox crda dbus dnsmasq
dropbear firewall hotplug2 ip iptables iptables-mod-conntrack iptables-mod-nat 
iw kernel kmod-ath kmod-ath9k kmod-ath9k-common kmod-button-hotplug kmod-cfg80211
kmod-crypto-aes kmod-crypto-arc4 kmod-crypto-core kmod-input-core kmod-input-gpio-keys-polled
kmod-input-polldev kmod-ipt-conntrack kmod-ipt-core kmod-ipt-nat kmod-ipt-nathelper
kmod-iptunnel4 kmod-ipv6 kmod-leds-gpio kmod-ledtrig-usbdev kmod-lib-crc-ccitt kmod-mac80211
kmod-nls-base kmod-ppp kmod-pppoe kmod-sit kmod-tun kmod-usb-core kmod-usb-ohci kmod-usb2
libavahi libc libcap libdaemon libdbus libexpat libgcc libgdbm libip4tc libncurses
libnl-tiny libpcap libpthread libreadline librt libuci libxtables mtd ntpd opkg ppp
ppp-mod-pppoe quagga quagga-bgpd quagga-libospf quagga-libzebra quagga-ospfd 
quagga-vtysh swconfig tcpdump terminfo uboot-envtools uci wireless-tools wpad-mini

-> fileliste mit versionen: Medium:Inst_pkgs.txt.gzfake.jpg


Einstellungen einzelner Services

Hier nun die wichtigstsen Konfigurationsanpassungen für einzelne Services:

Basissystemeinstellungen

In /etc/config/system ist lediglich der hostname anzupassen:

root@ratbert:/etc/config# cat system 

config 'system'
	option 'hostname' 'ratbert'
	option 'timezone' 'UTC'

config 'timeserver' 'ntp'
	list 'server' '0.openwrt.pool.ntp.org'
	list 'server' '1.openwrt.pool.ntp.org'
	list 'server' '2.openwrt.pool.ntp.org'
	list 'server' '3.openwrt.pool.ntp.org'

config 'led' 'led_usb'
	option 'name' 'USB'
	option 'sysfs' 'tp-link:green:usb'
	option 'trigger' 'usbdev'
	option 'dev' '1-1'
	option 'interval' '50'

config 'led' 'led_wlan'
	option 'name' 'WLAN'
	option 'sysfs' 'tp-link:green:wlan'
	option 'trigger' 'phy0tpt'


Netzconfig

In /etc/config/network findet sich die Basiskonfiguration für Netzwerk unter OpenWRT:

 
root@ratbert:/etc/config# cat network 
---->
config 'interface' 'loopback'
	option 'ifname' 'lo'
	option 'proto' 'static'
	option 'ipaddr' '127.0.0.1'
	option 'netmask' '255.0.0.0'

config 'interface' 'lan'
	option 'ifname' 'eth0.1'
	#option 'type' 'bridge'
	option 'proto' 'static'
	option ipaddr	172.22.99.4
	option 'netmask' '255.255.255.0'
	option netmask	255.255.255.0
				

config 'interface' 'wan'
	option 'ifname' 'eth0.2'
	option 'proto' 'pppoe'
	option username "HIERUNSEREGEHEIMENUMMER@t-online.de"
	option password "GEHEIMESPASSWORT"
	option peerdns	0
	option ipv6 1
					

config 'switch'
	option 'name' 'rtl8366rb'
	option 'reset' '1'
	option 'enable_vlan' '1'

config 'switch_vlan'
	option 'device' 'rtl8366rb'
	option 'vlan' '1'
	option 'ports' '1 2 3 4 5t'

config 'switch_vlan'
	option 'device' 'rtl8366rb'
	option 'vlan' '2'
	option 'ports' '0 5t'

config interface wifi
	option proto	static
	option ipaddr	172.22.101.1


Wireless Network

/etc/config/wireless :

config wifi-device  radio0
	option type     mac80211
	option channel  6
	option macaddr	f4:ec:38:ba:1d:ac
	option hwmode	11ng
	option htmode	HT20
	list ht_capab	SHORT-GI-40
	list ht_capab	DSSS_CCK-40

config wifi-iface
	option device   radio0
	option network  wifi
	option mode     ap
	option ssid     C3D2.n
	option encryption none


Firewall

Crappy OpenWRT firewall disabled.

root@ratbert:~# cat /etc/rc.local 
# Put your custom commands here that should be executed once
# the system init finished. By default this file does nothing.

iptables -t nat -A POSTROUTING -o pppoe-wan -j MASQUERADE
iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

exit 0

Wir hatten mal noch in der raw table NOTRACK zwischen LAN & WLAN...

DNSmasq

Der combinierte DNS und DHCP Server dnsmasq ist in /etc/config/dhcp so eingestellt:

root@ratbert:/etc/config# cat dhcp 
config dnsmasq
	option domainneeded	1
	option boguspriv	1
	option filterwin2k	0  # enable for dial on demand
	option localise_queries	1
	option rebind_protection 1  # disable if upstream must serve RFC1918 addresses
	option rebind_localhost 1  # enable for RBL checking and similar services
	#list rebind_domain example.lan  # whitelist RFC1918 responses for domains
	option local	'/lan/'
	option domain	'lan'
	option expandhosts	1
	option nonegcache	0
	option authoritative	1
	option readethers	1
	option leasefile	'/tmp/dhcp.leases'
	option resolvfile	'/tmp/resolv.conf.auto'
	#list server		'/mycompany.local/1.2.3.4'
	#option nonwildcard	1
	#list interface		br-lan
	#list notinterface	lo
	#list bogusnxdomain     '64.94.110.11'

config dhcp wifi
	option interface	wifi
	option start 	100
	option limit	150
	option leasetime	12h

config dhcp lan
	option interface	lan
	option ignore	1
config dhcp wan
	option interface	wan
	option ignore	1

aiccu

Der Sixxs Tunnel ist in /etc/config/aiccu configuriert:

root@ratbert:/etc/config# cat aiccu 
config aiccu
	option username		'****************'
	option password		'****************'
	option protocol		''
	option server		'tic.sixxs.net'
	option interface	''
	option tunnel_id	''
	option requiretls	''
	option defaultroute	'1'
	option nat		'0'
	option heartbeat	'1'

Quagga

root@ratbert:/etc/rc.d# vtysh

Hello, this is Quagga (version 0.99.20).
Copyright 1996-2005 Kunihiro Ishiguro, et al.

ratbert# sh ru
Building configuration...

Current configuration:
!
!
interface aiccu
 ipv6 nd suppress-ra
!
interface eth0
 ipv6 nd suppress-ra
!
interface eth0.0
 ipv6 nd suppress-ra
!
interface eth0.1
 ip ospf message-digest-key 1 md5 $GEHEIM
 ipv6 address 2001:6f8:1194:c3d2::1/64
 ipv6 nd prefix 2001:6f8:1194:c3d2::/64
 ipv6 nd ra-interval 5
 ipv6 nd ra-lifetime 60
 ipv6 nd reachable-time 30
 no ipv6 nd suppress-ra
!
interface eth0.2
 ipv6 nd suppress-ra
!
interface lo
!
interface mon.wlan0
 ipv6 nd suppress-ra
!
interface pppoe-wan
 ipv6 nd suppress-ra
!
interface sit0
 ipv6 nd suppress-ra
!
interface wlan0
 ipv6 address 2001:6f8:1194:c3d4::1/64
 ipv6 nd prefix 2001:6f8:1194:c3d4::/64
 ipv6 nd ra-interval 10
 ipv6 nd ra-lifetime 600
 ipv6 nd reachable-time 60
 no ipv6 nd suppress-ra
!
router bgp 64699
 bgp router-id 172.22.99.4
 network 172.22.99.0/24
 network 172.22.101.0/24
 neighbor fe80::a800:42ff:fe7a:3246 remote-as 64699
 neighbor fe80::a800:42ff:fe7a:3246 description dn42.hq.c3d2.de
 neighbor fe80::a800:42ff:fe7a:3246 interface eth0.1
!
 address-family ipv6
 neighbor fe80::a800:42ff:fe7a:3246 activate
 neighbor fe80::a800:42ff:fe7a:3246 soft-reconfiguration inbound
 exit-address-family
!
router ospf
 ospf router-id 172.22.99.4
 redistribute connected
 network 172.22.99.0/24 area 0.0.0.0
 network 172.22.101.0/24 area 0.0.0.0
 area 0.0.0.0 authentication message-digest
!
access-list vty permit 127.0.0.0/8
access-list vty deny any
!
ip forwarding
ipv6 forwarding
!
line vty
 access-class vty
!
end
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