Hi All, I am measuring the diffrent kinds of traffic like FTP traffic , WWW traffic , Mail Traffic etc. at my gateway. The method which I have chosen is , each of these services runs under different standard ports like 20 ,21 for FTP , 80 for WWW etc. using the Linux IPCHAIN utility. I am getting the values correctly, i.e. it is giving some exact values when I tranfers a file or access any WWW server. Now my problem is , when a ftp or www clients gets connected to the ftp or WWW server , it send a request to that particular port, and that server will assign a different port not that particular port. At my gateway I am listening to that particular port not the server assigned ports and I am getting the exact values. Now the question is how this has been happening. I am listing at that pericular ports, and servers will assining different ports, How this mapping is done internally ? please direct me some good URLs. Thank you very much in advance Regards Venkat Hallale - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu
