nmap from different places gives different results!


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I have an unraid server with multiple network cards.

 

two of the nics are used on a pfsense VM to provide me with a virtual firewall/router.

 

pfsense has my no-ip.com dynamic dns set up on it. pfsense also has some ports forwarded for PLex, Emby, Sickrage etc...

 

When i nmap my ddns name from Server-A (In south africa) I can see only the ports I have specifically forwarded. GREAT!

 

When i nmap my ddns name from Server-B (in the UK) I can see the ports i forwarded AND a load of other ports too! Like pop3, smtp, ftp, imap... LOADs of others that I have not specifically forwarded!

 

When i nmap my ddns name from Server-C (also in the UK) I can see only the ports I have specifically forwarded.

 

Please can anyone tell me what is going on?! I do not want these odd ports open. But apparently they only appear to be open from my place of work... which I have not specifically allowed in PFsense or anything.

 

I just don;t understand why some ports can be seen from one place, and not the other!

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