Category Archives: Computer

Computer, Debian, Linux, Operating Systems, Uncategorized

Linux Serial Console – Grub

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.

GRUB_DEFAULT=0
GRUB_TIMEOUT=1
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,9600n8"

# Uncomment to disable graphical terminal (grub-pc only)
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1"

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

/etc/inittab

T0:2345:respawn:/sbin/getty -L ttyS0 9600 vt100
Computer, E-Mail, Uncategorized

Exim

### auth/30_exim4-config_examples
plain:
  driver = plaintext
  public_name = PLAIN
  client_send = "${if !eq{$tls_cipher}{}{\
             ^${extract{1}{::}\
               {${lookup{$host}lsearch*{CONFDIR/passwd.client}{$value}fail}}}\
             ^${extract{2}{::}\
               {${lookup{$host}lsearch*{CONFDIR/passwd.client}{$value}fail}}}\
           }fail}"

login:
  driver = plaintext
  public_name = LOGIN
  client_send = "${if !eq{$tls_cipher}{}{}fail}\
                 : ${extract{1}{::}\
                {${lookup{$host}lsearch*{CONFDIR/passwd.client}{$value}fail}}} \
                 : ${extract{2}{::}\
             {${lookup{$host}lsearch*{CONFDIR/passwd.client}{$value}fail}}}"

### transport/30_exim4-config_remote_smtp
remote_smtp:
  debug_print = "T: remote_smtp for [EMAIL PROTECTED]"
  driver = smtp
  hosts_try_auth = DCsmarthost

### CONFDIR/passwd.client
smtp.1und1.com:m12345678-9:beispielpasswort

http://www.mail-archive.com/debian-user-german@lists.debian.org/msg67453.html

Computer, Debian, Life, Linux, Programming

Subversion Homedir

Preparing the software:

apt-get install subversion libapache2-svn
sudo mkdir  /mnt/var/svn
chown www-data:www-data -R /mnt/var/svn

Apache Config:

<Location /svn>
DAV svn
   SVNParentPath /mnt/var/svn
   <LimitExcept GET PROPFIND OPTIONS REPORT>
      AuthType Basic
      AuthName "Authorization Realm"
      AuthUserFile /mnt/var/svn/svnauthusers.txt
      Require valid-user
   </LimitExcept>
</Location>
sudo htpasswd -c /mnt/var/svn/svnauthusers.txt patrick.preuss 
sudo chown www-data:www-data /mnt/var/svn/svnauthusers.txt

sudo svnadmin create /mnt/var/svn/patrick.preuss
sudo chown www-data:www-data -R /mnt/var/svn/patrick.preuss

svn co http://10.0.12.10/svn/patrick.preuss
Computer, Linux, Network

BASH inet_aton inet_ntoa

# aton and ntoa
function INET_NTOA() {
  local IFS=. num quad ip e
  num=$1
  for e in 3 2 1; do
    quad=$((256**$e))
    ip[$((3-$e))]=$(($num/$quad))
    num=$((num%quad))
  done
  ip[3]=${num}
  echo "${ip[*]}"
}

function INET_ATON() {
  local IFS=. ip num e
  ip=($1)
  for e in 3 2 1; do
    num=$(($num+${ip[$((3-$e))]}*256**$e))
  done
  num=$(($num+${ip[3]}))
  echo $(($num&0xFFFFFFFF))
}
ASA, Cisco, Computer, Juniper, Network, Security

i got my first juniper

Leave a comment

It is a Netscreen 5gt. So now commands maybe usefull:

 

Cisco IOS Cisco PIX
Cisco ASA		 Juniper Netscreen Description
show configuration show configuration get config saved get saved configuration
show running-config show running-config get config get device configuration
save to save changes to config
show version show version get system gets system information, Netscreen mode
show ip inspect session get session info shows load on the firewall 85+ implies there will be some latency
show interface
sh ip interface		 get interface shows interfaces, zones
get address trust/unturst shows defined network objects
show arp
sh ip arp <interface>		  show arp get arp shows arp entries
 show ip route show route get route shows firewall routes
get service shows firewall services
get group address network groups
get group service service groups
get policy in/out shows applied firewall policies
get log traffic shows firewall logs – options: based on src/dst/IP/port
no <command> unset to remove a config statement
get user all shows vpn users
get log event shows vpn logs
get mip shows one to one Nat’s
get vip shows configured port forwarding rules
get route ip x.x.x.x finds the specific route for an ip
set policy id xx put you in a specific policy then you can add more objects it instead of creating a group
Network, Windows

Windows 7 Packet Caputre

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You have several options to capture packets on Windows 7 on is Wireshark the other is

netsh

 

[sourcecode]

C:\Users\rt01>netsh trace show scenarios

Verfügbare Szenarien (18):

AddressAcquisition        : Problembehandlung in Zusammenhang mit der Adressenerfassung
DirectAccess                  : Problembehandlung in Zusammenhang mit DirectAccess
FileSharing                    : Allgemeine Datei- und Druckerfreigabeprobleme behandeln
InternetClient                 : Probleme mit der Webkonnektivität diagnostizieren
InternetServer                : Behandeln von serverseitigen Webkonnektivitätsproblemen
L2SEC                            : Problembehandlung in Zusammenhang mit der Authentifizierung auf der 2. Schicht
LAN                                : Problembehandlung im Zusammenhang mit verkabelten LANs
Layer2                            : Problembehandlung in Zusammenhang mit der Konnektivität auf der 2. Schicht
MBN                               : Problembehandlung in Zusammenhang mit mobilem Breitband
NDIS                              : Problembehandlung in Zusammenhang mit Netzwerkadaptern
NetConnection              : Problembehandlung bei Netzwerkverbindungen
P2P-Grouping               : Peer-zu-Peer-Gruppierungsprobleme behandeln
P2P-PNRP                     : Problembehandlung in Zusammenhang mit dem Peer Name Resolution-Protokoll (PNRP)
RemoteAssistance         : Probleme mit der Windows-Remoteunterstützung behandeln
RPC                               : Probleme mit dem RPC-Framework beheben
WCN                              : Problembehandlung in Zusammenhang mit der Windows-Sofortverbindung
WFP-IPsec                     : Behandeln von Windows-Filterplattformproblemen und IPsec-bezogenen Problemen
WLAN                             : Problembehandlung in Zusammenhang mit drahtlosen LANs
[/sourcecode]

 

[sourcecode]

C:\Windows\system32>netsh trace start scenario=MBN capture=yes report=yes tracefile=c:\trace\trace.etl

Ablaufverfolgungskonfiguration:

Status:             Wird ausgeführt
Ablaufverfolgungsdatei:         C:\trace\trace.etl
Anfügen:             Aus
Kreisförmig:           Ein
Maximale Größe:           250 MB
Bericht:             Ein
[/sourcecode]

 

[sourcecode]

netsh trace stop

[/sourcecode]

 

then you can use the Network Monitor NM