transmission:l2tp

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transmission:l2tp [2024/09/04 14:45]
sthibaul 		transmission:l2tp [2025/03/30 18:47] (Version actuelle)
sthibaul voir les ZLB
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   * https://salsa.debian.org/debian/l2tpns/-/commits/master   * https://salsa.debian.org/debian/l2tpns/-/commits/master
   * https://lists.ffdn.org/wws/info/l2tpns   * https://lists.ffdn.org/wws/info/l2tpns
-  * https://bugs.debian.org/929610 
   * https://bugs.debian.org/cgi-bin/pkgreport.cgi?archive=both;package=l2tpns   * https://bugs.debian.org/cgi-bin/pkgreport.cgi?archive=both;package=l2tpns
   * Ancien upstream: https://github.com/bodea/l2tpns puis http://git.sameswireless.fr/l2tpns.git et puis aussi https://sourceforge.net/projects/l2tpns/   * Ancien upstream: https://github.com/bodea/l2tpns puis http://git.sameswireless.fr/l2tpns.git et puis aussi https://sourceforge.net/projects/l2tpns/
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 ``` ```
-tcpdump -n -vvv   -i any 'port 1701 and+tcpdump -n -vvv   -i any 'udp and port 1701 and
    (udp[8] & 0x80) == 0 and    (udp[8] & 0x80) == 0 and
    (     ((udp[16] == 0xc0 or udp[16] == 0xc2) and udp[17] == 0x23)      (     ((udp[16] == 0xc0 or udp[16] == 0xc2) and udp[17] == 0x23)  
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 ``` ```
  
-  * Observer les négociations en tous genre (pas de trafic ipv4, ipv6, echo, ccp):+  * Observer les négociations en tous genre (pas de trafic ipv4, ipv6, echo, ccp, mlppp):
  
 ``` ```
-sudo tcpdump -v -n -i any 'port 1701 +sudo tcpdump -v -n -i any 'udp and port 1701 and (len <= 40 or ( 
-   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x21) )+       ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x21) ) 
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[18] == 0x00 and udp[19] == 0x21) )
    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x21) )    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x21) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[20] == 0x00 and udp[21] == 0x21) )
 +
    and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57) )    and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57) )
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[18] == 0x00 and udp[19] == 0x57) )
    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57) )    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[20] == 0x00 and udp[21] == 0x57) )
 +
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x3d) )
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[18] == 0x00 and udp[19] == 0x3d) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x3d) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[20] == 0x00 and udp[21] == 0x3d) )
 +
    and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x80 and udp[17] == 0xfd) )    and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0x80 and udp[17] == 0xfd) )
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[18] == 0x80 and udp[19] == 0xfd) )
    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x80 and udp[19] == 0xfd) )    and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0x80 and udp[19] == 0xfd) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[20] == 0x80 and udp[21] == 0xfd) )
 +
    and ( not (( udp[8] & 0x40 == 0 ) and udp[18] == 0x9 ) )    and ( not (( udp[8] & 0x40 == 0 ) and udp[18] == 0x9 ) )
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[20] == 0x9 ) )
    and ( not (( udp[8] & 0x40 != 0 ) and udp[20] == 0x9 ) )    and ( not (( udp[8] & 0x40 != 0 ) and udp[20] == 0x9 ) )
 +   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[22] == 0x9 ) )
 +
    and ( not (( udp[8] & 0x40 == 0 ) and udp[18] == 0xa ) )    and ( not (( udp[8] & 0x40 == 0 ) and udp[18] == 0xa ) )
 +   and ( not (( udp[8] & 0x40 == 0 ) and udp[16] == 0xFF and udp[17] == 0x03 and udp[20] == 0xa ) )
    and ( not (( udp[8] & 0x40 != 0 ) and udp[20] == 0xa ) )    and ( not (( udp[8] & 0x40 != 0 ) and udp[20] == 0xa ) )
-'+   and ( not (( udp[8] & 0x40 != 0 ) and udp[18] == 0xFF and udp[19] == 0x03 and udp[22] == 0xa ) ) 
 +) )' 
 +``` 
 + 
 +  * Observer un tunnel en particulier: 
 + 
 +``` 
 +sudo tcpdump -v -n -i any 'udp and port 1701 
 +    and ( ( ( udp[8] & 0x40 == 0 ) and udp[10] = 0 and udp[11] = 10 ) or 
 +          ( ( udp[8] & 0x40 != 0 ) and udp[12] = 0 and udp[13] = 10 ) ) 
 +          '
 ``` ```
  
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 ``` ```
-sudo tcpdump -v -n -i any 'port 1701+sudo tcpdump -v -n -i any 'udp and port 1701
     and ( ( ( udp[8] & 0x40 == 0 ) and udp[12] = 0 and udp[13] = 123 ) or     and ( ( ( udp[8] & 0x40 == 0 ) and udp[12] = 0 and udp[13] = 123 ) or
           ( ( udp[8] & 0x40 != 0 ) and udp[14] = 0 and udp[15] = 123 ) )           ( ( udp[8] & 0x40 != 0 ) and udp[14] = 0 and udp[15] = 123 ) )
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 ``` ```
-sudo tcpdump -v -n -i any 'port 1701+sudo tcpdump -v -n -i any 'udp and port 1701
     and (    ( ( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57 and udp[26] == 0x11 and udp[60] == 0x2 and ( udp[61] == 0x22 or udp[61] == 0x23 ) )     and (    ( ( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57 and udp[26] == 0x11 and udp[60] == 0x2 and ( udp[61] == 0x22 or udp[61] == 0x23 ) )
           or ( ( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57 and udp[24] == 0x11 and udp[58] == 0x2 and ( udp[59] == 0x22 or udp[59] == 0x23 ) ) )           or ( ( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57 and udp[24] == 0x11 and udp[58] == 0x2 and ( udp[59] == 0x22 or udp[59] == 0x23 ) ) )
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 ``` ```
-sudo tcpdump -v -n -i any 'port 1701+sudo tcpdump -v -n -i any 'udp and port 1701
     and (    ( ( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57 and udp[26] == 58 and ( udp[60] == 134 or udp[60] == 133 ) )     and (    ( ( udp[8] & 0x40 != 0 ) and udp[18] == 0x00 and udp[19] == 0x57 and udp[26] == 58 and ( udp[60] == 134 or udp[60] == 133 ) )
           or ( ( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57 and udp[24] == 58 and ( udp[58] == 134 or udp[58] == 133 ) ) )           or ( ( udp[8] & 0x40 == 0 ) and udp[16] == 0x00 and udp[17] == 0x57 and udp[24] == 58 and ( udp[58] == 134 or udp[58] == 133 ) ) )
  • transmission/l2tp.1725453943.txt.gz
  • Dernière modification: 2024/09/04 14:45
  • de sthibaul