Please help me solve the riddle to this ACl scenario.?

kjukjkjkj

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Mar 10, 2011
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I want a access list which will permit smtp traffic sourced from host 10.1.129.100 port 8080 destined to
host 192.168.1.10?How could i do that? I talked to my cisco friend they say the following acl should apply...

access-list 101 permit tcp 10.1.128.0 0.0.1.255 eq 8080 192.168.1.0 0.0.0.15 eq 25

I mean should 10.1.128.0 have a WC mask similar to 0.0.0.255 instead and for destination how come it is 15? It could only
be 15 if the subnet mask is 240.Right? How could you assume it to be .240 ? How ...I so confused please help.
 
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