Question about sockets

Ruby
1

hello
i am new to Ruby.
i want to make a small program that when you scan the computer with NMAP
it will look like a real program.
some kind of small honeypot.

i am trying to do it with pop3,ssh,smtp,http,ftp,telnet and RDP.

every protocol is a different port of course so i am changing the port
and the header.
i’ve succeeded only with smtp and ftp.
please help with the other.

the code is :

require ‘socket’

server = TCPServer.open(80)
hostname = Socket.gethostbyname(Socket.gethostname).first
header1 = “HTTP/1.1 200 OK”
header2 = “Fri 11 Jan 2013 13:13:13 GMT”
header7 = “Location: www.fuckyou.com/”
header3 = “Server: Microsoft-IIS/6.0”
header4 = “Vary: Accept-Encoding”
header5 = “Connection: close”
header6 = “Content-Type: text/html; charset=iso-8859-1”

loop do
Thread.start(server.accept) do |client|
client.write header1
client.write header2
client.write header7
client.write header3
client.write header4
client.write header5
client.write header6
client.close
end

end

and it still now working.
another thing - can i post all of the headers 1-6 in one header ?
thanks you very much

2

Try separating your headers with newlines, according to HTTP standard.

Also, this might be of interest:
http://apidock.com/ruby/Socket/tcp_server_loop/class

3

hello
thank you very much.
i had a problem with all the headers so i found a nice option
i wrote all the lines in HEX and used .pack(H*)

4

thank you very much !
can you please explain what is “\r\n” ?

5

On Sat, Jan 12, 2013 at 8:19 AM, Ophir O. [email protected] wrote:

another thing - can i post all of the headers 1-6 in one header ?

headers = []
headers << “HTTP/1.1 200 OK”
headers << “Fri 11 Jan 2013 13:13:13 GMT”
headers << “Server: Microsoft-IIS/6.0”
headers << “Vary: Accept-Encoding”
headers << “Connection: close”
headers << “Content-Type: text/html; charset=iso-8859-1”
headers << “Location: www.fuckyou.com/”
headers << “”

…

client.write headers.join(“\r\n”)

6

means return + newline. Windows’s way of dictating the end of a line in
a file. Unix uses just ‘\r’

Ophir O. wrote:

thank you very much !
can you please explain what is “\r\n” ?

–
D. Deryl D.

“The bug which you would fright me with I seek” - William Shakespeare -
The Winter’s Tale, Act III, Scene II - A court of Justice.

7

Thank you for correcting my mistake. That is correct. My apologies.

Jeremy B. wrote:

means return + newline. Windows's way of dictating the end of a line in

-Jeremy

–
Sent from my mobile device. Please excuse my brevity.

–
D. Deryl D.

“The bug which you would fright me with I seek” - William Shakespeare -
The Winter’s Tale, Act III, Scene II - A court of Justice.

8

On Sat, Jan 12, 2013 at 11:00 AM, Jeremy B. [email protected] wrote:

More specifically, “\r\n” denotes a carriage return line feed pair,
sometimes referred to as CRLF. You should find quite a bit in a Google
search for those terms.

Also, a correction. Unix uses just the line feed character (LF or “\n”), not
the carriage return character (CR or “\r”). Other systems may use other
combinations. :slight_smile:

Of particular importance to OP, HTTP protocol dictates that the header
lines be separated with CRLF (“\r\n”). Other protocols do as well.
That said, many servers are forgiving and will accept CR, LF, and
CRLF. Postel set the tone in TCP with “send only what is correct, be
forgiving in what you accept”.

9

More specifically, “\r\n” denotes a carriage return line feed pair,
sometimes referred to as CRLF. You should find quite a bit in a Google
search for those terms.

Also, a correction. Unix uses just the line feed character (LF or “\n”),
not the carriage return character (CR or “\r”). Other systems may use
other combinations. :slight_smile:

“D. Deryl D.” [email protected] wrote:

–
D. Deryl D.

“The bug which you would fright me with I seek” - William Shakespeare -

The Winter’s Tale, Act III, Scene II - A court of Justice.

-Jeremy