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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 8
Anonymous
Not applicable

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
Oldjim
Resting Legend
Posts: 38,460
Thanks: 787
Fixes: 63
Registered: ‎15-06-2007

Re: Disable ports 21/23

which router are you using
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
Anonymous
Not applicable

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.
Oldjim
Resting Legend
Posts: 38,460
Thanks: 787
Fixes: 63
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
w23
Pro
Posts: 6,347
Thanks: 96
Fixes: 4
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.
Oldjim
Resting Legend
Posts: 38,460
Thanks: 787
Fixes: 63
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/