Server/fff-fra1/Log

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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

  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

dabei gab es Probleme, erst beim 2. Start des fastd Scripts kamen die Interface richtig hoch.

  • 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. Freifunk Franken

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

    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

}

  • gre Tunnel nach kleeV2 und bbg / klappt noch nicht / erneuter test nach einrichten von olsr
  • olsr installiert. interfaces nach kleeV2, bbg
  • tunnel nach kleev2 funktioniert
  • Routing Tabelle wird über kleev2 ausgetauscht
  • DHCP Subnetz nach 10.50.240.0/21 korrigiert
  • Probleme mit dem KeyXchange -> Fix von Tim, fastd Neustart
  • Client bezieht keine IP, Batman zeigt keinen Hop zum mit aux-FW geflashten Router
  • WR841ND mit Beta der Aux-Firmware geflascht. Nach langer Fehlersuche funktioniert B.A.T.M.A.N auf Router und GW. Zugang auf Router schwierig -> Anschluss von Client port und WAN port an Heimrouter. Später: Selbstheilung ohne erkennbare Einwirkung.
  • DHCP manuell gestartet, aus irgendwelchen Gründen nicht bei automatisch bei reboot.
  • Masquerading auf dem GW aktiviert: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE. Eintrag in /etc/rc.local
  • Test: Umleiten des Traffic von kleev2 nach fra1, indem neue default route in kleev2 definiert wurde ("ip route add default via 10.50.252.48 table fff") -> Erfolgreich

12.10.2015

  • apache2 installiert
  • snpd und mrtg nach https://wiki.freifunk-franken.de/w/Portal:Netz/Statistiken eingerichtet. Abweichung: statt CPU.cfg system.mfg und kein eigener index.
  • apache2 index in /etc/apache2/sites-available/000-default.conf nach /var/www geändert.
  • robots.txt -> /var/www: No searchbot crawling
  • vnstat nach http://www.tecmint.com/vnstat-php-frontend-for-monitoring-network-bandwidth/ eingerichtet. Databases "vnstat -u -i INTERFACE" und php-Anzeige /var/www/vnstat/config.php für eth0, bat0, kleeV2, bbg, fffauxdefVPN
  • Kopie von dhcpd-pool und dhcp-statistics.sh nach /usr/local/bin, Eintrag von dhcp-statistics.sh in die crontab (alle 5 Minuten)
  • In Crontab -> Tägliches Löschen von /var/www/topology-*.dot Dateien, die älter als 2 Tage sind (find /var/www -name "topology-????-??-??-??-??-??.dot" -mtime +2 | xargs rm -f)
  • Installation von phplot entsprechend http://www.phplot.com/phplotdocs/install.html
  • Webseite mit Monitoring Tools und Impressum hinzugefügt
  • curl installiert

13.10.2015

  • sudo user "dpaufler" angelegt. Key eingetragen.
  • node.js installiert:

apt-get install npm

sudo npm cache clean -f

sudo npm install -g n

sudo n stable

sudo npm install npm -g

14.10.2015

17.10.2015

  • Logrotate angepasst: 3 Tage backlogs ist Standard (/etc/logrotate.conf)
  • DHCP Ausgabe deaktiviert. Auszug aus /etc/log/rsyslogd.conf:
#  /etc/rsyslog.conf	Configuration file for rsyslog.
#
#			For more information see
#			/usr/share/doc/rsyslog-doc/html/rsyslog_conf.html


##############
#### DHCP ####
##############
#:programname, isequal, "dhcpd" /var/log/dhcpd.log
:programname, isequal, "dhcpd" /dev/null
:programname, isequal, "dhcpd" ~
.
.
.

19.10.2015

  • iperf installiert
  • Logging-Regeln angepasst:
    • Verwerfen aller Logs von dhcpd. dump /etc/rsyslogd.conf
#  /etc/rsyslog.conf	Configuration file for rsyslog.
#
#			For more information see
#			/usr/share/doc/rsyslog-doc/html/rsyslog_conf.html


##############
#### DHCP ####
##############
#:programname, isequal, "dhcpd" /var/log/dhcpd.log
:programname, isequal, "dhcpd" /dev/null
:programname, isequal, "dhcpd" ~


#################
#### MODULES ####
#################

$ModLoad imuxsock # provides support for local system logging
$ModLoad imklog   # provides kernel logging support
#$ModLoad immark  # provides --MARK-- message capability

# provides UDP syslog reception
#$ModLoad imudp
#$UDPServerRun 514

# provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514


###########################
#### GLOBAL DIRECTIVES ####
###########################

#
# Use traditional timestamp format.
# To enable high precision timestamps, comment out the following line.
#
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

#
# Set the default permissions for all log files.
#
$FileOwner root
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022

#
# Where to place spool and state files
#
$WorkDirectory /var/spool/rsyslog

#
# Include all config files in /etc/rsyslog.d/
#
$IncludeConfig /etc/rsyslog.d/*.conf


###############
#### RULES ####
###############

#
# First some standard log files.  Log by facility.
#
auth,authpriv.*			/var/log/auth.log
*.*;auth,authpriv.none		-/var/log/syslog
#cron.*				/var/log/cron.log
daemon.*			-/var/log/daemon.log
kern.*				-/var/log/kern.log
lpr.*				-/var/log/lpr.log
mail.*				-/var/log/mail.log
user.*				-/var/log/user.log

#
# Logging for the mail system.  Split it up so that
# it is easy to write scripts to parse these files.
#
mail.info			-/var/log/mail.info
mail.warn			-/var/log/mail.warn
mail.err			/var/log/mail.err

#
# Logging for INN news system.
#
news.crit			/var/log/news/news.crit
news.err			/var/log/news/news.err
news.notice			-/var/log/news/news.notice

#
# Some "catch-all" log files.
#
*.=debug;\
	auth,authpriv.none;\
	news.none;mail.none	-/var/log/debug
*.=info;*.=notice;*.=warn;\
	auth,authpriv.none;\
	cron,daemon.none;\
	mail,news.none		-/var/log/messages

#
# Emergencies are sent to everybody logged in.
#
*.emerg				:omusrmsg:*

#
# I like to have messages displayed on the console, but only on a virtual
# console I usually leave idle.
#
#daemon,mail.*;\
#	news.=crit;news.=err;news.=notice;\
#	*.=debug;*.=info;\
#	*.=notice;*.=warn	/dev/tty8

# The named pipe /dev/xconsole is for the `xconsole' utility.  To use it,
# you must invoke `xconsole' with the `-file' option:
# 
#    $ xconsole -file /dev/xconsole [...]
#
# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
#      busy site..
#
daemon.*;mail.*;\
	news.err;\
	*.=debug;*.=info;\
	*.=notice;*.=warn	|/dev/xconsole
    • Generell 3 Tage backlogs:
# see "man logrotate" for details
# rotate log files daily
daily

# keep 3 days worth of backlogs
rotate 3

# create new (empty) log files after rotating old ones
create

# uncomment this if you want your log files compressed
compress

# packages drop log rotation information into this directory
include /etc/logrotate.d

# no packages own wtmp, or btmp -- we'll rotate them here
/var/log/wtmp {
    missingok
    monthly
    create 0664 root utmp
    rotate 1
}

/var/log/btmp {
    missingok
    monthly
    create 0660 root utmp
    rotate 1
}

# system-specific logs may be configured here

# system-specific logs may be configured here
/var/log/dhcpd.log {
    rotate 1
    daily
    compress
}
    • Flush des DHCP lease files um 3.31 Uhr morgens. Dump crontab:
# m   h  dom mon dow   command
*/10  *  *   *   *     sh /etc/fastd/fff_aux_fastd.sh
*/5   *  *   *   *     perl /etc/olsrd/dotDraw.pl > /dev/null 2>&1
*/1   *  *   *   *     env LANG=C /usr/bin/mrtg /etc/mrtg/system.cfg > /dev/null 2>&1
*/1   *  *   *   *     env LANG=C /usr/bin/mrtg /etc/mrtg/traffic.cfg > /dev/null 2>&1
*/5   *  *   *   *     /usr/bin/vnstat -u >/dev/null 2>&1
*/5   *  *   *   *     sudo dhcp-statistics.sh
45    2  *   *   *     find /var/www/topology/. -name "topology-????-??-??-??-??-??.dot" -mtime +1 | xargs rm -f
#*/5   *  *   *   *     sudo chown -R dhcpd:dhcpd /var/lib/dhcp
31   3    *  *   *     sudo flush_dhcp.sh
    • Flush des DHCP lease files um 3.31 Uhr morgens. Dump flush_dhcp.sh:
#!/bin/bash
leasefile="/var/lib/dhcp/dhcpd.leases"

/etc/init.d/isc-dhcp-server stop
rm "$leasefile"
rm "$leasefile~"
touch "$leasefile"
echo "" > "$leasefile"
/etc/init.d/isc-dhcp-server start