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Nmap error message - socket troubles in Init: Too many open files (24)
From: Jesper Kückelhahn <dev.kyckel () gmail com>
Date: Wed, 12 Dec 2012 18:15:33 +0100

Hi List,

We ran a scan with the following parameters using nmap 6.26SVN (I don't know the exact revision, but it's from December 
6th):

"
nmap -sTUV -Pn -O 
-pT:-,U:7,53,67,68,69,111,123,137,161,177,500,520,1645,1812,1900,2049,3478,3479,4500,5060,5070,5353,10080 -oA 
outputfile -iL targetsFile
"

and got the following result 

"
NSE: Script Engine Scan Aborted.
An error was thrown by the engine: /usr/local/bin/../share/nmap/nse_main.lua:898: error in __gc metamethod 
(/usr/local/bin/../share/nmap/nse_main.lua:391: Error in setup of iod with proto 17 and af 2: Too many open files (24))
stack traceback:
        [C]: in function 'threads_iter'
        /usr/local/bin/../share/nmap/nse_main.lua:898: in function 'run'
        /usr/local/bin/../share/nmap/nse_main.lua:1358: in function </usr/local/bin/../share/nmap/nse_main.lua:1261>
        [C]: in ?
"

The 'targetsFile' included 255 hosts, and the report for each of the hosts was something like: 

"
Nmap scan report for 212.242.39.128
Host is up (0.029s latency).
Not shown: 65535 filtered ports
PORT      STATE         SERVICE    VERSION
7/udp     open|filtered echo
53/udp    open|filtered domain
67/udp    open|filtered dhcps
68/udp    open|filtered dhcpc
69/udp    open|filtered tftp
111/udp   open|filtered rpcbind
123/udp   open|filtered ntp
137/udp   open|filtered netbios-ns
161/udp   open|filtered snmp
177/udp   open|filtered xdmcp
500/udp   open|filtered isakmp
520/udp   open|filtered route
1645/udp  open|filtered radius
1812/udp  open|filtered radius
1900/udp  open|filtered upnp
2049/udp  open|filtered nfs
3478/udp  open|filtered unknown
3479/udp  open|filtered unknown
4500/udp  open|filtered nat-t-ike
5060/udp  open|filtered sip
5070/udp  open|filtered unknown
5353/udp  open|filtered zeroconf
10080/udp open|filtered amanda
Too many fingerprints match this host to give specific OS details
"
 
The last line of output was:

"
socket troubles in Init: Too many open files (24)
"

Before switching to version 6.26SVN, we where using an older version of nmap (5.51 I think) and we didn't have this 
issue, running on the same set of hosts, with the same parameters. Currently we are trying run on a smaller set of 
hosts in parallel (--max-hostgroup 64), to see if this could possibly solve the issue temporally.

Could this be related to these posts ?

http://seclists.org/nmap-dev/2012/q3/538
http://seclists.org/nmap-dev/2012/q3/864
http://seclists.org/nmap-dev/2012/q3/872
http://seclists.org/nmap-dev/2012/q4/133


Regards,
  Jesper



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