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NMAP - What is NMAP and what is it used for?

What is NMAP & use of it?Basically NMAP is a free security scanner and a network mapper mainly used by system administrators, hackers , pentesters and etc. These are few use cases of NMAP and there are tons of ways to use NMAP.Finding hosts in the networkports used by hosts and its statusFinding vulnerabilitiesInformation on versions and OS used
Basic NMAP Scan nmap -sP Ping multiple host to check if the hosts are alive or not

TCP scan (full open scan) nmap -sT This is a TCP connect scan. TCP connections are done with a 3 way handshake SYNSYN-ACKACKThis is otherwise called as full open scan

Stealth Mode Scan (Half open scan) namp -sS This is known as SYN scan / Half open scan / Stealth scan SYNSYN-ACKRST

OS detection scan namp -O
With this command you can get which OS the system is running. Example: Windows, Linux, Android etc.
NMAP with OS detection, traceroute, host discovery and more nmap -A
This is aggressive scan …

SIMCOM SIM900A fixed

Since everyone is interested in this post and lots of request comes to get the firmware, i have put a link so that everyone can download it easily. SIMCOM 900A firmware

Its been a while that i was trying to fix the SIM900A GSM module. This module support local GSM band but after some researches it was concluded that it is carrier locked :(. After long conversion of days to actual chip manufacture SIMCOM, they told it can be fixed by updating its firmware to latest original version but unfortunately they don't provide firmware to small parties.

I never stop trying to get the firmware and SIMCOM again replied, this time they said contact local SIMCOM supplier and request for firmware. But this little Maldives don't have SIMCOM or any electronics manufacturer. So i contacted my friend coody from NOA LABS/Smart prototyping (a friend in china) and told him to help me. I explained him what to do so he can communicate with SIMCOM in china.

Finally he sends and email saying that he got the firmware and it is uploaded to drop box. So just now downloaded the files and flash the new firmware and tadaaa... it works and works :)
Now i can register to local networks and do the magic.

Here is the terminal data that i got after the update.


+CREG: 3


+CFUN: 1


+CREG: 0

+CREG: 2

+CREG: 1,"003C","F945"

Call Ready
+COPS: (2,"DhiMobile","","47201"),(3,"WATANIYA","WATANIYA","47202"),,(0,1,4),(0,                                  1,2)

> test
+CMGS: 34


for test i send an SMS and it works perfectly..see the above..


Anonymous said…
how to flash firmware?
Micoy Aguilar said…
how to flash im from philippines sir.

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