Software/tool to route an IP packet to proxy server and capture the Proxy reply as an Post: 302289167

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Special Forums IP Networking Software/tool to route an IP packet to proxy server and capture the Proxy reply as an Post 302289167 by Rajesh_BK on Thursday 19th of February 2009 01:32:21 AM

02-19-2009

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Software/tool to route an IP packet to proxy server and capture the Proxy reply as an

Hi,

I am involved in a project on Debian. One of my requirement is to route an IP packet in my application to a proxy server and receive the reply from the proxy server as an IP packet. My application handles data at the IP frame level. My application creates an IP packet(with all the necessary IP header and proper payload). I need to route this IP packet to a proxy server and capture the reply from the proxy server at the IP level as an IP packet.

One of solution that I have in my mind(thought have not tried) is to create a raw socket in my application and establish a connection with the proxy server. Then I would be able to send IP packet to the proxy server via the raw socket. The reply from the proxy server when read via the raw socket in my application would be an IP packet sent by the proxy. But this implementation requires my application to be run with root privilidges. My application would be run by mulitple users and providing them root access is not acceptable.

As an alternative, I am planning to run a different program on a seperate machine(with root privilidge). This new program(let us call it as router for our reference) would listen on UDP ports to which my applications running on different machines would send data(IP packets). This means IP packet is sent as data via a UDP socket(Similar to IP-in-IP). When the router receives the data(IP Packet) it routes it to Proxy server via a Raw socket connection. This means the router would establish a raw socket connection with the Proxy server and send the IP packets on the raw socket(This IP packtes are received as user data on the UDP port). Similarly the data received from the proxy server, the router reads the same via the raw socket as an IP packet. This IP packet is sent via the UDP connection to the machine(machine 1 or 2 in the Diagram).

Please refer the attachments for a graphical view(Graphical textpad.txt for textpad/wordpad and Graphical notepad.txt for notepad)

I looking for a software/package that would perfom the functionality of the router described above. It would be great if it can handle any authenication required with the proxy server also.

In summary the software should accecpt UDP/TCP connections, recieve an IP packet as data from the UDP/TCP port, send the received IP packet to proxy server, receive the reply IP packet from the proxy server

One of my friend suggested to try CIPE for the same. But I could not find CIPE fit my requirements. Could you please provide any pointers to any tool/software that would fit my requirements.

Regards,
Rajesh B.K

Graphical notepad.txt (944 Bytes)

Graphical textpad.txt (544 Bytes)

Last edited by Rajesh_BK; 02-19-2009 at 03:19 AM.. Reason: Format was not proper

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LEARN ABOUT XFREE86

xfindproxy

XFINDPROXY(1)						      General Commands Manual						     XFINDPROXY(1)

NAME

       xfindproxy - locate proxy services

SYNOPSIS

       xfindproxy -manager managerAddr -name serviceName -server serverAddr [-auth] [-host hostAddr] [-options opts]

DESCRIPTION

       xfindproxy  is  a  program  used to locate available proxy services.  It utilizes the Proxy Management Protocol to communicate with a proxy
       manager.  The proxy manager keeps track of all available proxy services, starts new proxies when necessary, and makes sure that proxies are
       shared whenever possible.

       The  -manager argument is required, and it specifies the network address of the proxy manager.  The format of the address is a standard ICE
       network id (for example, "tcp/blah.x.org:6500").

       The -name argument is required, and it specifies the name of the desired proxy service (for example, "LBX").  The name is case insensitive.

       The -server argument is also required, and it specifies the address of the target server.  The format of the address  is  specific  to  the
       proxy  service  specified  with	the  -name argument.  For example, for a proxy service of "LBX", the address would be an X display address
       (e.g, "blah.x.org:0").

       The -auth argument is optional.	If specified, xfindproxy will read 2  lines  from  standard  input.   The  first  line	is  an	authoriza-
       tion/authentication  name.  The second line is the authorization/authentication data in hex format (the same format used by xauth).  xfind-
       proxy will pass this auth data to the proxy, and in most cases, will be used by the proxy to authorize/authenticate itself  to  the  target
       server.

       The  -host  argument  is  optional.   If  xfindproxy  starts a new proxy service, it will pass the host specified.  The proxy may choose to
       restrict all connections to this host.  In the event that xfindproxy locates an already existing proxy, the host will be  passed,  but  the
       semantics of how the proxy uses this host are undefined.

       The  -options  argument	is  optional.  If xfindproxy starts a new proxy service, it will pass any options specified.  The semantics of the
       options are specific to each proxy server and are not defined here.  In the event that xfindproxy locates an already  existing  proxy,  the
       options will be passed, but the semantics of how the proxy uses these options are undefined.

       If  xfindproxy  is successful in obtaining a proxy address, it will print it to stdout.	The format of the proxy address is specific to the
       proxy service being used.  For example, for a proxy service of "LBX", the proxy address would be the X display address of the  proxy  (e.g,
       "blah.x.org:63").

       If xfindproxy is unsuccessful in obtaining a proxy address, it will print an error to stderr.

SEE ALSO

       proxymngr (1), Proxy Management Protocol spec V1.0

AUTHOR

       Ralph Mor, X Consortium

XFree86 							   Version 4.7.0						     XFINDPROXY(1)