(HOW) socket listener through ONLY port 443

[garywhw]

Thanks everyone

i am now able to connect client to server, which serves multi-threading incoming signals. In addition, my 'client' is able to read text from file and send it over the network to the server through any unspecified and unused port number.

However, how to send strings across network WITH A SPECIFIC and ALREADY USED port number (443, which is https)?

questions: is it more secured and safe to send information through port number 443 than others? ps: on which site could i get more reference regarding this topic. (it is now more on the issue of security, i guess )

if port number 443 is indeed more secured, please advise on how to achieve that objective of sending signals through port number 443?

Please advise,

God bless
garyW

 

[sedj]

port 443 is indeed more secure than others - it is an encrypted http port which uses SSL (Secure Socket Level I think)

You can't use a port which is already in use by a java app as it throws a bind exception.

I'm not sure if you can use a port which is used by another non-java application - I managed to connect to 25 and 8080, both used by other non-java apps - however I wouldn't really advise it as you may block out these apps if they were not using these ports at the time ... I may have been only able to connect because at that precise millisecond they were not actually in use.

I've never used port 443 for sending data, however if using normal Sockets/ServerSockets doesn't work, I would look at the SSL package in release 1.4

 

[garywhw]

no, it is not true. i have people doing that and that's why i have been wondering about the technology behind to achieve that.

i will try on with other medium and might get back to update to you too if you are interested about the result.

 

[sedj]

whats not true ?