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Author Topic: Port 8333  (Read 1963 times)
BlueBird
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February 27, 2011, 03:17:31 AM
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I have two copies of BitCoin running on two computers behind the same router with both systems pointing to the same 8333 port.  Only one computer gets more than 8 connections, but why cant both systems use the same 8333 port, my router allowed the assignment for each system? 

P.S. If anyone wants to generate a transaction or two they can send to  1C4eBje7vpxuE2deewfiNj8zgoiF4jpV4C    I will send it back at you, send your address.  Have fun!

Jim   Smiley
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Tril
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February 27, 2011, 04:06:11 AM
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I have two copies of BitCoin running on two computers behind the same router with both systems pointing to the same 8333 port.  Only one computer gets more than 8 connections, but why cant both systems use the same 8333 port, my router allowed the assignment for each system?  

P.S. If anyone wants to generate a transaction or two they can send to  1C4eBje7vpxuE2deewfiNj8zgoiF4jpV4C    I will send it back at you, send your address.  Have fun!

Jim   Smiley

This is a limitation of TCP- a connection end point is uniquely defined by an IP and a port number.  If you only have one publically-accessible IP address from your ISP, you can only have one bitcoin accept incoming connections on 8333.  This shouldn't be a problem, though.  I would forward port 8333 to whichever machine you have online more often, then connect the second machine directly to the first machine using -connect=<internal IP of first machine> on the bitcoin command line or in bitcoin.conf.  This will be faster, anyway, as you won't be downloading the same block twice from the Internet; each block will go from the Internet to first machine, then to the other machine over the high-speed LAN.
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March 01, 2011, 10:00:22 PM
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I dont recommend this but wouldn't UPnP work
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