how to redirect

[░▒▓ ɹɐzǝupɐɥʞ ɐzɹıɯ ▓▒░ <mirza.k@xxxxxxxxx>]

ISP A ---+
.............|
............+------- Server / Squid --------[ User ]
.............|
ISP B ---+


i want to set port 0 - 1024 using isp A
the rest using ISP B

is that possible ?
how ?




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