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Disable ports 21/23

Maxtackleclowne
Newbie
Posts: 3
Registered: 14-01-2016

Disable ports 21/23

Hi we have been asked to disable ports 21 and 23 to stop inbound traffic by our card terminal provider to comply, can anybody help please
8 REPLIES
Community Veteran
Posts: 5,318
Thanks: 1,369
Fixes: 32
Registered: 16-10-2014

Re: Disable ports 21/23

Traffic in to all ports should be disabled by default, this might mean that someone has already opened these port implying you have a need for them, so closing them may cause you other issues.
P.S. What exactly do you mean by 'inbound traffic'
Maxtackleclowne
Newbie
Posts: 3
Registered: 14-01-2016

Re: Disable ports 21/23

well we have a cctv system on port 80 and a PC and card terminal on the router but the card terminal provider has done a security scan to ensure compliance but have found that ports 21 and 23 are insecure and need closing but I don't know how to go about it
dick:quote
Community Veteran
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Registered: 15-06-2007

Re: Disable ports 21/23

which router are you using
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Maxtackleclowne
Newbie
Posts: 3
Registered: 14-01-2016

Re: Disable ports 21/23

hi the router is white and has router model sticker huaweihg533 regards
Dave
dick:quote
Community Veteran
Posts: 5,318
Thanks: 1,369
Fixes: 32
Registered: 16-10-2014

Re: Disable ports 21/23

These ports 21 FTP and 23 Telnet may well be factory enabled on your router but as I do not have one of these I can't confirm this, someone will come along soon and tell you what you need to do.
Community Veteran
Posts: 38,460
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Registered: 15-06-2007

Re: Disable ports 21/23

So it is a HUAWEI HG533
Can you try checking your open ports using https://www.grc.com/x/ne.dll?bh0bkyd2
Note a quick check indicates that they should be blocked by default
Community Veteran
Posts: 6,313
Thanks: 86
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Registered: 08-01-2008

Re: Disable ports 21/23

http://portforward.com/english/routers/port_forwarding/Huawei/HG533/defaultguide.htm may help.
Call me 'w23'
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
Community Veteran
Posts: 38,460
Thanks: 1,028
Fixes: 62
Registered: 15-06-2007

Re: Disable ports 21/23

this is also a useful check to see if a port is open http://canyouseeme.org/