How to open the port 5050,5051,5052 for redhat

Dear all,

Under redhat 8.0, I would like to open the ports 5050,5051, 5052. please
give me the step, and how to check whether it is open or not,
thanks

Regards,
Simon

"Simon Lee" <(E-Mail Removed)> writes:

>Dear all,

>Under redhat 8.0, I would like to open the ports 5050,5051, 5052. please
>give me the step, and how to check whether it is open or not,
>thanks


For what? First you need some software which will listen on those ports (
or {x,}inetd to listen and transfer control when something comes up on
those ports. Then you have to make sure that you firewall lets requests
through IF you want external systems to be able to connect to those ports.
Which one are you asking about?

Thanks for your reply, we have built a video web in our video server, which
need to open the ports 5050,5051, and 5052, At this moment, such video is
only browsed by the intranet, but not the internet. Anyway, our ISP tells us
that the above ports have already been opened. Anyway, our video web have
not yet been browsed through the internet. why?

Simon

"Unruh" <unruh-(E-Mail Removed)> ¦b¶l¥ó
news:dcsh9a$mrn$(E-Mail Removed) ¤¤¼¶¼g...
> "Simon Lee" <(E-Mail Removed)> writes:
>
> >Dear all,
>
> >Under redhat 8.0, I would like to open the ports 5050,5051, 5052. please
> >give me the step, and how to check whether it is open or not,
> >thanks
>
>
> For what? First you need some software which will listen on those ports (
> or {x,}inetd to listen and transfer control when something comes up on
> those ports. Then you have to make sure that you firewall lets requests
> through IF you want external systems to be able to connect to those ports.
> Which one are you asking about?
>
>
>

"Simon Lee" <(E-Mail Removed)> writes:

>Thanks for your reply, we have built a video web in our video server, which
>need to open the ports 5050,5051, and 5052, At this moment, such video is
>only browsed by the intranet, but not the internet. Anyway, our ISP tells us
>that the above ports have already been opened. Anyway, our video web have
>not yet been browsed through the internet. why?

Impossible to say as there is not enough info. Eg, consistant with what you
say is that your link to the ISP is down. I am not suggesting that is the
explanation, but it is consistant.
Can ANY THING get from the web to your machine. Ie, if you are using NAT,
( IP address of 10.x.x.x or 192.168.x.x. ) nothing from the web will ever
be able to get to your machines. (Well, that is a first approximation).

So, can someone from outside ssh to your systems for example? Or web browse
on your system?

From outside try
telnet name.of.your.machine 5050

Does it say refused or does it seem to respond?


>Simon

>"Unruh" <unruh-(E-Mail Removed)> ¦b¶l¥ó
>news:dcsh9a$mrn$(E-Mail Removed) ¤¤¼¶¼g...
>> "Simon Lee" <(E-Mail Removed)> writes:
>>
>> >Dear all,
>>
>> >Under redhat 8.0, I would like to open the ports 5050,5051, 5052. please
>> >give me the step, and how to check whether it is open or not,
>> >thanks
>>
>>
>> For what? First you need some software which will listen on those ports (
>> or {x,}inetd to listen and transfer control when something comes up on
>> those ports. Then you have to make sure that you firewall lets requests
>> through IF you want external systems to be able to connect to those ports.
>> Which one are you asking about?
>>
>>
>>

"Simon Lee" <(E-Mail Removed)> wrote in message
news:dcv8fa$kbp$(E-Mail Removed)

> Thanks for your reply, we have built a video web in our video server,
> which need to open the ports 5050,5051, and 5052, At this moment,
> such video is only browsed by the intranet, but not the internet.
> Anyway, our ISP tells us that the above ports have already been
> opened. Anyway, our video web have not yet been browsed through the
> internet. why?

Just a wild guess, based on your NNTP headers (but this might be your NNTP
server?):

# nmap -sSU -p5050,5051,5052 ip112.bb146.pacific.net.hk

Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2005-08-05 19:42 PDT
Interesting ports on ip112.bb146.pacific.net.hk (202.64.146.112):
PORT STATE SERVICE
5050/tcp closed mmcc
5050/udp open|filtered mmcc
5051/tcp closed unknown
5051/udp open|filtered unknown
5052/tcp closed unknown
5052/udp open|filtered unknown

If that's an FQDN the service should be available upon, then do the TCP
ports need to be open as well as the UDP?