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Choice of non-standard ephemeral ports


Recommendation for a non-standard SSL portCan Apache serve proxy requests for websites on non-standard ports?On Linux, how can I tell how many ephemeral ports are left available?Hiding non-standard ports in the address bar?SSL over non-standard port?Securing phpmyadmin: non-standard port + httpsSOHO Routers and Non-Standard CIDR BlocksUnsure about IIS usage of ephemeral portswhy linux assigns ephemeral ports out of its rangeA good reason why docker containers shouldn't use standard ports?nginx won't listen on non-standard port






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








1















This is somewhat related to - but different from - Recommendation for a non-standard SSL port .



One answer there suggests that binding to 8443 is a valid example of an alternate HTTPS socket configuration. However, under some Windows systems, 8443 falls within the ephemeral port range.



My questions are:



  • Are there any risks associated with binding a service - such as sshd or httpd - to listen to a port in the ephemeral range?

  • Could it interfere with the creation of outgoing sockets? In particular, will a listening socket and a connecting socket on the same address with the same port interfere, collide, or otherwise fail?

  • Is it expected in such a case that a client request a new ephemeral port until it finds one that is available?









share|improve this question






















  • Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

    – Lenniey
    May 3 at 8:24

















1















This is somewhat related to - but different from - Recommendation for a non-standard SSL port .



One answer there suggests that binding to 8443 is a valid example of an alternate HTTPS socket configuration. However, under some Windows systems, 8443 falls within the ephemeral port range.



My questions are:



  • Are there any risks associated with binding a service - such as sshd or httpd - to listen to a port in the ephemeral range?

  • Could it interfere with the creation of outgoing sockets? In particular, will a listening socket and a connecting socket on the same address with the same port interfere, collide, or otherwise fail?

  • Is it expected in such a case that a client request a new ephemeral port until it finds one that is available?









share|improve this question






















  • Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

    – Lenniey
    May 3 at 8:24













1












1








1








This is somewhat related to - but different from - Recommendation for a non-standard SSL port .



One answer there suggests that binding to 8443 is a valid example of an alternate HTTPS socket configuration. However, under some Windows systems, 8443 falls within the ephemeral port range.



My questions are:



  • Are there any risks associated with binding a service - such as sshd or httpd - to listen to a port in the ephemeral range?

  • Could it interfere with the creation of outgoing sockets? In particular, will a listening socket and a connecting socket on the same address with the same port interfere, collide, or otherwise fail?

  • Is it expected in such a case that a client request a new ephemeral port until it finds one that is available?









share|improve this question














This is somewhat related to - but different from - Recommendation for a non-standard SSL port .



One answer there suggests that binding to 8443 is a valid example of an alternate HTTPS socket configuration. However, under some Windows systems, 8443 falls within the ephemeral port range.



My questions are:



  • Are there any risks associated with binding a service - such as sshd or httpd - to listen to a port in the ephemeral range?

  • Could it interfere with the creation of outgoing sockets? In particular, will a listening socket and a connecting socket on the same address with the same port interfere, collide, or otherwise fail?

  • Is it expected in such a case that a client request a new ephemeral port until it finds one that is available?






ip port






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked May 2 at 22:30









ReinderienReinderien

128110




128110












  • Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

    – Lenniey
    May 3 at 8:24

















  • Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

    – Lenniey
    May 3 at 8:24
















Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

– Lenniey
May 3 at 8:24





Other than all mentioned products being EOL, i suppose there shouldn't be a problem. Or just reconfigure the EPR on the systems. (or use modern OS/software, which ususally has an EPR of 49152 to 65535)

– Lenniey
May 3 at 8:24










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