====== OpenWrt ======

===== Derivate =====
  * [[LEDE]]
  * [[FreeWRT]]
  * [[Freifunk-Firmware]]
  * [[Gargoyle]] baut auf OpenWrt auf und ergänzt es um ein Webinterface mit vielen Funktionen
  * [[Tomato]]

===== Erweiterungen =====
  * [[http://x-wrt.org/|X-Wrt]] Erweiterung für OpenWrt, liefert ein Webinterface für den Endbenutzer

===== Pakete installieren =====

<Code>
opkg install PAKET
</Code>

Pakete auflisten:

<Code>
opkg list
</Code>
===== Tips & Tricks ======
==== Debrick ====
https://wiki.openwrt.org/doc/howto/generic.debrick

**Beispiel: TP-Link Archer C50 v3**
  * https://wiki.openwrt.org/toh/tp-link/archer-c50#debricking
  * https://wiki.openwrt.org/toh/tp-link/tl-wdr4300#de-brick_or_oem_installation_using_the_tftp_recovery

**Hintergrund:**

 The stock firware (3.13.33(130617)) features a TFTP recovery client in bootloader. To activate it press and hold WPS/Reset Button during powering on until WPS LED turns on. Connect computer to LAN1. Using [[tcpdump]], you should see ARP requests from router having address 192.168.0.86 looking for address 192.168.0.66.
<Code>
# tcpdump -ni eth0 arp
ARP, Request who-has 192.168.0.66 tell 192.168.0.86, length 46
</Code>

Set up your computer to address 192.168.0.66, netmask /24 (255.255.255.0).
<Code>
# ip addr add dev eth0 192.168.0.66/24
</Code>

Using TCPdump, you should now see request for new firmware image:
<Code>
# tcpdump -npi eth0 udp
IP 192.168.0.86.2195 > 192.168.0.66.69:  44 RRQ "wdr4300v1_tp_recovery.bin" octet timeout 5
**TFTP-Server**
</Code>

**Vorgehen:**

Download Recovery: https://static.tp-link.com/Archer%20C50(EU)_V3_170608.zip 

Wichtig! Nach dem Entpacken das bin-File preparieren ("To prepare recovery file cut the first 0x200 (that is 512) Bytes from original firmware (This cut only header of firmware, Recovery need bootloader and firmware)")

<Code>
dd if=Archer_C50v3_EU_0.9.1_0.4_up_boot\[170608-rel35472\].bin of=tp_recovery.bin skip=1 bs=512
</Code>

**Grundsätzliche Vorgehensweise:**

  - Setup your computer to 192.168.0.66 (SubnetMask /24 = 255.255.255.0) and connect it to LAN1.
  - Start TFTP server and provide recovery file with it.
  - To activate TFTP Recovery press and hold WPS/Reset Button during powering (8 sec.) on until WPS LED turns on.

**TFTP-Server installieren**

<Code>
apt install atftpd
</Code>

Create directory where you want to put the image file 

<Code>
mkdir /srv/tftp
</Code>

Put an image file into your directory 

<Code>
cp ~/tp_recovery.bin /srv/tftp
</Code>

Change the ownership of the folder and the file in it 

<Code>
chown nobody:nogroup -R /srv/tftp
</Code>

Run TFTP server 

<Code>
atftpd --daemon /srv/tftp
</Code>

Check if your server is listening 

<Code>
netstat -lunp|grep 69
</Code>

Evtl. verhindert rlinetd das sraten, da er auf dem gleichen Port lauscht, dann hilft:

<Code>
/etc/init.d/rlinetd stop
</Code>

Check that you can in fact pull the file from your tftp server 

<Code>
$ tftp 192.168.0.66
tftp> get tp_recovery.bin
Received 8152633 bytes in 0.8 seconds
tftp> quit
</Code>

===== Siehe auch =====
  * [[DD-WRT]]
  * [[Linksys WRT54GL]]

===== Weblinks =====
  * [[wp>de:OpenWrt]]
  * http://openwrt.org