Open Ports - What's using them?

[PaulKemp]

Hi!

Just did a port scan from network utilities. And there are a few I'm not sure whats doing. I've used the Well known TCP and UDP ports used by Apple devices as a reference.

These are my open ports:

[COLOR="Red"]	 Open TCP Port: 	983[/COLOR]
	 Open TCP Port: 	993    		imaps
[COLOR="red"]	 Open TCP Port: 	1017[/COLOR]
[COLOR="red"]	 Open TCP Port: 	1021   		exp1[/COLOR]
	 Open TCP Port: 	17500

Anyone got an idea of whats using them? Thanks!

Useful links:

• Well known TCP and UDP ports used by Apple devices

 

[mrapplegate]

Hi!

Just did a port scan from network utilities. And there are a few I'm not sure whats doing. I've used the Well known TCP and UDP ports used by Apple devices as a reference.

These are my open ports:

[COLOR="Red"]	 Open TCP Port: 	983[/COLOR]
	 Open TCP Port: 	993    		imaps
[COLOR="red"]	 Open TCP Port: 	1017[/COLOR]
[COLOR="red"]	 Open TCP Port: 	1021   		exp1[/COLOR]
	 Open TCP Port: 	17500

Anyone got an idea of whats using them? Thanks!

Useful links:

• Well known TCP and UDP ports used by Apple devices

Did you try Google?
17500 seems to be dropbox. 993 is IMAP, email it would seem.
Not sure about the others but I'm sure Google can find them.

 

[PaulKemp]

Did you try Google?
17500 seems to be dropbox. 993 is IMAP, email it would seem.
Not sure about the others but I'm sure Google can find them.

Yes I tried google, googling it is way easier than posting a forum post.

I was after the red ones, even though I did not specify that.

 

[mrapplegate]

Yes I tried google, googling it is way easier than posting a forum post.

I was after the red ones, even though I did not specify that.

Oh ok. I just Googled the non-red ones
I'll search on the others.

 

[switon]

RE: /etc/services...

Hi,

The file "/etc/services" lists the ports/protocols that your computer may be using via configuration in various plists.

Regards,
Switon

 

[PaulKemp]

Oh ok. I just Googled the non-red ones
I'll search on the others.

Thanks

----------

Hi,

The file "/etc/services" lists the ports/protocols that your computer may be using via configuration in various plists.

Regards,
Switon

Nice! The kind of tips I was looking for. Will check out

 

[mrapplegate]

I forgot to post. I could not find useful information.
I would look into switon's hint about /etc/services