A 0 byte udp packet sent to SNMP port
(nmap -sU -p 161 pont-vesale) crashes the bridge.
nef:~$ snmpwalk pv public system
system.sysDescr.0 = "ScorpionMarlin"
system.sysObjectID.0 = OID: enterprises.541.1
system.sysUpTime.0 = Timeticks: (130641320) 15 days, 2:53:33.20
system.sysContact.0 = "NoContact"
system.sysName.0 = "PONT-VESALE"
system.sysLocation.0 = "NoLocation"
system.sysServices.0 = 15
nmap documentation extract:
-sU UDP scans: This method is used to determine which
UDP (User Datagram Protocol, RFC 768) ports are
open on a host. The technique is to send 0 byte
udp packets to each port on the target machine. If
we receive an ICMP port unreachable message, then
the port is closed. Otherwise we assume it is
open.
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,-~~-.___. ._. -= GRENIER Christophe =-
/ | ' \ | |"""""""""| sysadm de nef.esiea.fr
( ) 0 | | | ESIEA
\_/-, ,----' | | | Ecole Superieure d'Informatique -
==== !_!--v---v--" Electronique - Automatique
/ \-'~; |""""""""|
/ __/~| ._-""|| | Email: grenierat_private
=( _____|_|____||________| http://www.esiea.fr/public_html/Christophe.GRENIER/
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