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Is it possible to narrow the allowed range of outbound ports that can be used for a specific protocol (e.g. HTTP(S))? I understand that, by default, the system will randomly allocate any available port but is that configurable to use a specific one?

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use mangle table of 'iptables'.With mangle you can doing traffic shaping. –  Mohsen Pahlevanzadeh Mar 22 '13 at 22:23

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No, it makes little sense anyway. Why do you want to do this?

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to get a controllable handle on the network interface -- within some ranges. E.g. if i wanted some protocol to stay away from some port segments. –  amphibient Mar 23 '13 at 0:48
    
This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post. –  rahmu Mar 23 '13 at 1:04
    
@rahmu The question was "is it possible"; it's not automatically an invalid answer just because it has a question mark in it –  Michael Mrozek Mar 23 '13 at 19:25
    
It's not about the question mark. It's about the request for clarification. It's clearly stated in the auto-comment, I didn't invent it. Thank you for assuming I do these review tasks mechanically without putting thoughts into it. Highly appreciated. –  rahmu Mar 23 '13 at 19:51
    
@vonbrand: I still think the answer is very poorly worded. It should have more explanations. What makes you say that it's a "No" without doubt, as opposed to a "I don't know how to do it"? –  rahmu Mar 23 '13 at 19:52

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