SzabadLinuxot.Blogspot.com

2009. május 18., hétfő

# OpenWrt #4 - Install openntpd & Set Hungarian TZ

#!/bin/ash
opkg update && opkg install openntpd
sed -i "s/UTC/UTC-2/g" /etc/config/system
sync

# OpenWrt #5 - Schedule something with cron [e.g.: upgrades, etc.]

#!/bin/ash

echo "1 4 * * 6 opkg update && opkg upgrade
0 4 * * * echo -e \"nameserver 208.67.222.222\\nnameserver 208.67.220.220\" > /tmp/resolv.conf.auto" > /etc/crontabs/root
chmod 755 /etc/crontabs/root
sync
pkill cron
/etc/init.d/cron restart

ui.: Jó, tudom, ütemezni [minden péntek reggel] egy repo frissítést & upgrade-et, hátha adtak ki valami frissítést nem a legbölcsebb rendelkezésre állás szempontjából, csak példa.

# OpenWrt - How to set automount@boot & SWAP@boot [USB HDD]

#!/bin/ash
# tested on ASUS WL 500 GPv2 [OpenWrt Kamikaze 8.09]
# echo "USB HDD: partition1: 512 MByte swap; partition2: * MByte for data... [EXT3]"

# Automount@boot #1
mkdir -p /mnt/hdd/
opkg update && opkg install kmod-usb2 kmod-usb-storage kmod-fs-ext3 fdisk screen e2fsprogs
clear
echo "Now use fdisk, and mkfs to make partitions on the USB HDD:"
echo "partition1: 512 MByte [SWAP]; partition2: * MByte for data... [EXT3]"
echo
fdisk -l
read
screen
sync
clear

# Automount@boot #2
echo "mkdir /mnt/hdd; mount "$(fdisk -l | awk '/Linux/ && /83/ {print $1}')" /mnt/hdd" > /etc/init.d/hdd
ln -s ../init.d/hdd /etc/rc.d/S45hdd
chmod 755 /etc/init.d/hdd
sync
/etc/init.d/hdd

# Set SWAP@boot on USB HDD
opkg install swap-utils
echo 'mkswap '$(fdisk -l | awk '/swap/ && /82/ {print $1}') >> /etc/init.d/hdd
echo 'swapon '$(fdisk -l | awk '/swap/ && /82/ {print $1}') >> /etc/init.d/hdd
sync
/etc/init.d/hdd
clear
mount
echo
free
read

ui.: előfordulhat egy-két apróság _néha_ egy USB HDD felismerésében
ui2.: Az fdisk-hez segítség [a példa alapján]:

fdisk /dev/scsi/host0/bus0/target0/lun0/disc

n
p
1
enter
+512mb
t
82

n
p
2
enter
enter
t
2
83

w

Hozzuk is létre a filerendszert:

mkfs.ext3 /dev/scsi/host0/bus0/target0/lun0/part2

ui3.: aki nem ismerné a screen-t, annak link

# OpenWrt - How to set NFS [on LAN]

Goal: Share videos/music on a network with an OpenWrt router [read only, anonym, UTF8 characters in file names too, router runs 24h a day, clients always connected]. Kamikaze 8.09.

On the router [if the shared folder is "/mnt/hdd/megosztas/" ]

#!/bin/ash
mkdir -p /mnt/hdd/megosztas/
chmod 555 -R /mnt/hdd/megosztas/
opkg update && opkg install unfs3
echo '/mnt/hdd/megosztas/ 192.168.1.0/255.255.255.0(ro)' >> /etc/exports
/etc/init.d/unfs3 enable

echo '#!/bin/sh /etc/rc.common
# Copyright (C) 2006 OpenWrt.org
START=50

start() {
/etc/init.d/portmap restart
/usr/sbin/unfsd
}

stop() {
killall unfsd
}

restart() {
stop
sleep 1
start
}' > /etc/init.d/unfs3

sync
sleep 60

/etc/init.d/portmap stop
/etc/init.d/unfs3 restart

Client side [NFS related firewall settings]

#!/bin/bash
IPTABLES=$(which iptables)
$IPTABLES -A INPUT -i lo -s 127.0.0.1 -p udp --dport 111 -j ACCEPT
$IPTABLES -A INPUT -i lo -s 127.0.0.1 -p tcp --dport 111 -j ACCEPT
$IPTABLES -A OUTPUT -p tcp -m multiport --dport 111,2049 -j ACCEPT
$IPTABLES -A OUTPUT -p udp -m multiport --dport 111,2049 -j ACCEPT

Client side

#!/bin/bash
FELHNEV=$(w | awk '/x-session/ && /tty/ {print $1}')
mkdir -p /home/$FELHNEV/Desktop/Megosztas/
mount -vvv -t nfs 192.168.1.1:/mnt/hdd/megosztas/ /home/$FELHNEV/Desktop/Megosztas/ -o ro,noexec,nosuid,nodev,noatime,nolock,nfsvers=3

Client side - fstab

#!/bin/bash
FELHNEV=$(w | awk '/x-session/ && /tty/ {print $1}')
mkdir -p /home/$FELHNEV/Desktop/Megosztas/
echo "192.168.1.1:/mnt/hdd/megosztas/ /home/$FELHNEV/Desktop/Megosztas/ nfs ro,noexec,nosuid,nodev,noatime,nolock,nfsvers=3 0 0" >> /etc/fstab
mount -a

ui.: boccs az angol miatt, gyorsabb volt így
ui2.: A lazy unmount hasznos lehet egy esetleges ro NFS meghajtó lecsatoláskor: "umount -l /home/valaki/Desktop/Megosztas", miszerint aranyos dolgok történhetnek, ha nincs kapcsolat a routerrel.. :)

# OpenWrt - How to change WAN Mac address

Because the WAN part is the last one in the config file:

#### WAN configuration
config interface wan
option ifname "eth0.1"
option proto dhcp

Just append a line like this:

echo "option macaddr XX:XX:XX:XX:XX:XX" >> /etc/config/network
sync

# OpenWrt - How to set fixed IP for given Mac address [static lease]

echo "XX:XX:XX:XX:XX:XX 192.168.1.120" >> /etc/ethers.local sync

# OpenWRT - How to set OpenDNS, and block some FQDNs

OpenDNS:

#!/bin/ash
echo 'echo -e "nameserver 208.67.222.222\nnameserver 208.67.220.220" > /tmp/resolv.conf.auto' > /etc/init.d/opendns
chmod 755 /etc/init.d/opendns
ln -s ../init.d/opendns /etc/rc.d/S99opendns

Block a few FQDNs:

wget "http://pastebin.com/pastebin.php?dl=f585ae167" -O /etc/hosts.local

# OpenWRT - Where can I see the log's?

Just type:

logread

2009. május 12., kedd

# Security Tools List

http://securitytoolslist.domandhost.com/
http://backtrack.offensive-security.com/index.php?title=Tools

2009. május 9., szombat

# audio from wmv to mp3

#!/bin/bash
INPUT_WMV=valami.wmv
OUTPUT_MP3=$(echo $INPUT_WMV | sed "s/.wmv//g")
mencoder -ovc frameno -oac mp3lame -o temporary.avi $INPUT_WMV
mplayer -dumpaudio temporary.avi
mv stream.dump $OUTPUT_MP3.mp3
rm -f temporary.avi

ui.: Forrás