Re: dhcp script!

[Walt Scrivens <walts () gate net>]

OK this is the last one for tonight :-)  I have a busy day tomorrow so  
I may not get back at this until Thursday.

Eliminating the -PN gets us a MAC address - but wouldn't that have  
come from the Ping Reply packet?
Also I don't understand why the RST,ACK followed by RST between the  
Ping Reply and the Timestamp Reply.

Also, sorry - I forgot to save only the filtered packets on the first  
few capture files.  If you set a display filter
ip.src==192.168.1.1 or ip.dst==192.168.1.1
That will clean things up a bit!

Walt

**********************
sh-3.2# nmap --send-ip -d -sU -p67 --script=dhcp-inform --script- 
args=dhcptype=DHCPREQUEST 192.168.1.1

Starting Nmap 5.00 ( http://nmap.org ) at 2009-09-08 19:44 EDT
--------------- Timing report ---------------
  hostgroups: min 1, max 100000
  rtt-timeouts: init 1000, min 100, max 10000
  max-scan-delay: TCP 1000, UDP 1000, SCTP 1000
  parallelism: min 0, max 0
  max-retries: 10, host-timeout: 0
  min-rate: 0, max-rate: 0
---------------------------------------------
NSE: Loaded 1 scripts for scanning.
Warning: Unable to open interface vmnet8 -- skipping it.
Warning: Unable to open interface vmnet1 -- skipping it.
Initiating Ping Scan at 19:44
Scanning 192.168.1.1 [4 ports]
Packet capture filter (device en1): dst host 192.168.1.144 and (icmp  
or ((tcp or udp or sctp) and (src host 192.168.1.1)))
We got a ping packet back from 192.168.1.1: id = 32314 seq = 0  
checksum = 33221
Completed Ping Scan at 19:44, 0.01s elapsed (1 total hosts)
Overall sending rates: 335.51 packets / s, 12749.54 bytes / s.
mass_rdns: Using DNS server 208.67.222.222
mass_rdns: Using DNS server 208.67.220.220
Initiating Parallel DNS resolution of 1 host. at 19:44
mass_rdns: 0.07s 0/1 [#: 2, OK: 0, NX: 0, DR: 0, SF: 0, TR: 1]
Completed Parallel DNS resolution of 1 host. at 19:44, 0.06s elapsed
DNS resolution of 1 IPs took 0.07s. Mode: Async [#: 2, OK: 0, NX: 1,  
DR: 0, SF: 0, TR: 1, CN: 0]
Initiating UDP Scan at 19:44
Scanning 192.168.1.1 [1 port]
Packet capture filter (device en1): dst host 192.168.1.144 and (icmp  
or ((tcp or udp or sctp) and (src host 192.168.1.1)))
Completed UDP Scan at 19:44, 0.21s elapsed (1 total ports)
Overall sending rates: 9.37 packets / s, 262.44 bytes / s.
NSE: Script scanning 192.168.1.1.
NSE: Starting runlevel 1 scan
Initiating NSE at 19:44
NSE: NSE Script Threads (1) running:
NSE: Starting dhcp-inform against 192.168.1.1:67.
NSE: Finished dhcp-inform against 192.168.1.1:67.
Completed NSE at 19:44, 3.00s elapsed
NSE: Script Scanning completed.
Host 192.168.1.1 is up, received echo-reply (0.0046s latency).
Scanned at 2009-09-08 19:44:28 EDT for 3s
Interesting ports on 192.168.1.1:
PORT   STATE         SERVICE REASON
67/udp open|filtered dhcps   no-response
MAC Address: 00:0F:66:3E:98:EB (Cisco-Linksys)
Final times for host: srtt: 4576 rttvar: 5000  to: 100000

Read from /usr/local/share/nmap: nmap-mac-prefixes nmap-services.
Nmap done: 1 IP address (1 host up) scanned in 3.53 seconds
           Raw packets sent: 6 (208B) | Rcvd: 1 (28B)
sh-3.2#

Attachment: dhcp-inform3.cap
Description:

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