Server/fff-fra1/Log

08.10.15

• Passwort für fffranken geändert.
• Passwort für root geändert.

09.10.15

sudo installieren (als root)

apt-get update

apt-get install sudo

Neuen User delpiN angelegt (als root)

adduser delphin

adduser delphin sudo

nano /etc/sudoers

# User privilege specification
root    ALL=(ALL:ALL) ALL
delphin ALL=(ALL:ALL) ALL

fail2ban installiert und eingerichtet

sudo apt-get install fail2ban

sudo nano /etc/fail2ban/jail.local

sudo /etc/init.d/fail2ban restart

SSH Port geändert

Es sollte einen Port gewählt werden der nicht bereits vergeben ist (Liste vergebener Ports: more /etc/services)

sudo nano /etc/ssh/sshd_config

# What ports, IPs and protocols we listen for
Port 8024

/etc/init.d/ssh restart

SSH Login nur über Key erlauben

sudo nano /etc/ssh/sshd_config

RSAAuthentification no
AuthorizedKeysFile %h/.ssh/authorized_keys
IgnoreUserKnowHosts yes
ChallengeResponseAuthentication no
PasswordAuthentication no

sudo /etc/init.d/ssh restart

vnstat installiert

sudo apt-get install vnstat

mtr installiert

sudo apt-get install mtr

11.10.15

• 3x User hinzugefügt (mifritsche, christiand, green) (login via ssh key only)
• 3 Usern sudo Rechte eingeräumt (/etc/sudoers)
• sudo ohne erneute Passwordeingabe (sudo visudo; username ALL=(ALL) NOPASSWD: ALL)
• screen installiert
• dist-upgrade
• BTAMAN compilieren
• batctl compiliert
• fastd installiert
• kein OpenVPN
• DHCP
• bind9
• wget https://mifritscher.de/austausch/olsrd/jessie/olsrd_0.6.8.1-1_amd64.deb
• wget https://mifritscher.de/austausch/olsrd/jessie/olsrd-plugins_0.6.8.1-1_amd64.deb

TODO binary auf freifunk server (FTP) legen!

• dpkg -i ol*.deb

1. device: bat0

iface bat0 inet manual post-up ifconfig $IFACE up

   ##Einschalten post-up:
   # IP des Gateways am B.A.T.M.A.N interface:
   post-up ip addr add 10.50.240.2/21 dev $IFACE
   # Regeln, wann die fff Routing-Tabelle benutzt werden soll: 
   post-up ip rule add iif $IFACE table fff
   post-up ip rule add from 10.0.0.0/8 table fff
   post-up ip rule add to 10.0.0.0/8  table fff
   # Route in die Aux Hood:
   post-up ip route add 10.50.240.0/21 dev $IFACE table fff
   # Start des DHCP Servers:
   ### post-up invoke-rc.d isc-dhcp-server restart

   ##Ausschalten post-down:
   # Loeschen von oben definieren Routen, Regeln und Interface: 
   post-down ip route del 10.50.240.0/21 dev $IFACE table fff
   post-down ip rule del from 10.0.0.0/8 table fff
   post-down ip rule del to 10.0.0.0/8 table fff
   post-down ip rule del iif $IFACE table fff
   post-down ifconfig $IFACE down

1. VPN Verbindung in die Aux Hood

iface fffauxVPN inet manual

   post-up batctl -m bat0 if add $IFACE
   post-up ifconfig $IFACE up
   post-up ifup bat0
   post-down ifdown bat0
   post-down ifconfig $IFACE down

• Fastd Skript einfügen

christiand@fff-fra1:~$ cat /etc/fastd/fff_aux_fastd.sh

1. !/bin/sh

SERVERNAME="fff-fra1"

hood="def" project="fffaux" port=10000

SERVERNAME="$SERVERNAME.$hood"

hostname=$SERVERNAME

if [ ! -d /etc/fastd ] then

       mkdir /etc/fastd

fi

if [ ! -d /etc/fastd/$project.$hood ] then

       mkdir /etc/fastd/$project.$hood
       mkdir /etc/fastd/$project.$hood/peers

       #fastd config
       (
         echo "# Log warnings and errors to stderr"
         echo "log level error;"
         echo "# Log everything to a log file"
         echo "log to syslog as \"${project}${hood}\" level info;"
         echo "# Set the interface name"
         echo "interface \"${project}${hood}VPN\";"
         echo "# Support xsalsa20 and aes128 encryption methods, prefer xsalsa20"
         echo "#method \"xsalsa20-poly1305\";"
         echo "#method \"aes128-gcm\";"
         echo "method \"null\";"
         echo "# Bind to a fixed port, IPv4 only"
         echo "bind any:${port};"
         echo "# Secret key generated by \"fastd --generate-key\""
         echo "secret \"$(fastd --generate-key | grep -i Secret | awk '{print $2}')\";"
         echo "# Set the interface MTU for TAP mode with xsalsa20/aes128 over IPv4 with a base MTU of 1492 (PPPoE)"
         echo "# (see MTU selection documentation)"
         echo "mtu 1426;"
         echo "on up \"/etc/fastd/${project}.${hood}/up.sh\";"
         echo "on post-down \"/etc/fastd/${project}.${hood}/down.sh\";"
         echo "# Include peers from the directory 'peers'"
         echo "include peers from \"/etc/fastd/${project}.${hood}/peers\";"
         echo "secure handshakes no;"
       ) >> "/etc/fastd/$project.$hood/$project.$hood.conf"

       #fastd-up
       (
         echo "#!/bin/sh"
         echo "/sbin/ifdown \$INTERFACE"
       ) >> /etc/fastd/$project.$hood/down.sh

       chmod +x /etc/fastd/$project.$hood/down.sh

       (
         echo "#!/bin/sh"
         echo "/sbin/ifup \$INTERFACE" >> /etc/fastd/$project.$hood/up.sh
       ) >> /etc/fastd/$project.$hood/up.sh
       chmod +x /etc/fastd/$project.$hood/up.sh

fi

pubkey=$(fastd -c /etc/fastd/$project.$hood/$project.$hood.conf --show-key --machine-readable) port=$(grep ^bind /etc/fastd/$project.$hood/$project.$hood.conf | cut -d: -f2 | cut -d\; -f1)

1. fire up

if [ "$(/sbin/ifconfig -a | grep -i ethernet | grep ${project}${hood}VPN)" = "" ] then

 /bin/rm /var/run/fastd.$project.$hood.pid
 fastd -c /etc/fastd/$project.$hood/$project.$hood.conf -d --pid-file /var/run/fastd.$project.$hood.pid

fi

1. register

wget -T15 -q "http://keyserver.freifunk-franken.de/${project}/?name=$hostname&port=$port&key=$pubkey" -O /tmp/fastd_${project}.${hood}_output if [ "$?" != "0" ] then

       echo "Update failed"
       echo "Exiting, no clean up, no refresh"
       exit

fi

touch /tmp/fastd_${project}.${hood}_starting

filenames=$(cat /tmp/fastd_${project}.${hood}_output| grep ^#### | sed -e 's/^####//' | sed -e 's/.conf//g') for file in $filenames do

 grep -A100 ^####$file.conf$ /tmp/fastd_${project}.${hood}_output | grep -v ^####$file.conf$ | grep -m1 ^### -B100 | grep -v ^### | sed 's/ float;/;/g' > "/etc/fastd/$project.$hood/peers/$file"
 echo 'float yes;' >> "/etc/fastd/$project.$hood/peers/$file"

done

1. find old peers

OLD=$(find /etc/fastd/$project.$hood/peers/ -exec test -f '{}' -a /tmp/fastd_${project}.${hood}_starting -nt '{}' \; -print)

if [ -n "${OLD}" ] ; then

 echo "Lösche alte:"
 echo $OLD

 find /etc/fastd/$project.$hood/peers/ -exec test -f '{}' -a /tmp/fastd_${project}.${hood}_starting -nt '{}' \; -print | xargs /bin/rm /tmp/fastd_${project}.${hood}_starting

fi

1. reload

kill -HUP "$(cat /var/run/fastd.$project.$hood.pid)"

exit 0

• Hostname geändert
• IP Forwarding aktiviert
• Fastd Skript ausführbar (chmod +x /etc/fastd/fff_aux_fastd.sh)
• fastd Script gestartet, interface Name angepasst
• fastd Script in crontab und rc.local
• dns / bind9 als caching nameserver (8.8.8.8, 10.50.240.1)
• batman gw selection 1:1 aus anleitung
• bat0 als interface dhcp-server
• dhcp config:

1. 1. Freifunk Franken

option domain-name "fff.community"; option domain-name-servers 10.50.240.2; authoritative;

1. 1. aux

subnet 10.50.32.0 netmask 255.255.248.0 { # Netzwerk und Netzmaske der Aux

       range 10.50.242.0 10.50.243.255;        # IP-Range die der DHCP-Server i
       option routers 10.50.240.2;             # Default-Gateway, dass Clients 
       option domain-name-servers 10.50.240.2; # Name-Server, die Clients mitge

}