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# 8  
Old 03-06-2002
I posted my last post before I read the previous reply. I tried using iptables, and it seems to be not working on this box. I get an error message:
"...ip_tables.o: init_module: Device or resource busy" and that insmod failed on ip_tables.o. Note that ping, ssh, telnet and ftp connectoins are all accepted and work fine.
# 9  
Old 03-07-2002
This followup might be useful for others who might be moving existing code from Windows. The IP ports issues were the least of my problems. I was porting this code from Windows. Win32 ignores the first parameter of the select() system call. I had n=1. In Linux that must be the *value* of the highest socket descriptor +1, *not* the number of sockets to be tested, or select will not return. Typically, that value would be reassigned anytime a new socket descriptor is allocated. That assumes that the system will allocate always-increasing socket descriptor values. I stuck INT_MAX in there and it works fine. It probably causes a little extra processing to traverse every possible socket descriptor value in the fd_sets, but it simplifies the code.

Thanks for the help.
# 10  
Old 03-21-2002
Socket Bindind Issues!!!

Now what Language did you write this Socket w/ {PERL , C++ , etc};

Is the Program really listening? - use netstat.

What protocol is the program using - TCP , UDP?

See is you can telnet the port and get a possible socket hang - that indicates that something is listening.

Test locally on the running server before remotely /!\.

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