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Ports
From: ANT_THOMAS
25 Jul 2013 12:59
To: ALL
1 of 24
40588.1
Is there a website or a piece of software out there than can check which ports I can access the outside world on?
The Internet connection at my new workplace is shockingly slow but also restricted port wise I think. I can't even remote desktop into my server. SSH ports seem blocked outwards too.
I would like to know which ports are open so I can at least put one of my SSH machines on that port.
From: patch
25 Jul 2013 13:24
To: ANT_THOMAS
2 of 24
40588.2
In reply to
40588.1
Is running a port scan from inside the company you've only just joined really a good idea? Either way, 80 or 443 would be good starting points, probably.
From: ANT_THOMAS
25 Jul 2013 13:27
To: patch
3 of 24
40588.3
In reply to
40588.2
After doing some reading I've come to the same conclusion. Any attempts across a range of ports will most likely be logged, I'd prefer not to have that happen!
I might just open 443 at home and forward it somewhere useful.
From: Ken (SHIELDSIT)
25 Jul 2013 13:36
To: ANT_THOMAS
4 of 24
40588.4
In reply to
40588.1
Steve Gibson's site
will scan from the outside and tell you what's open. It's more for safety than anything but it might be worth a go. The site is pretty ugly but Steve is a smart dude.
From: Ken (SHIELDSIT)
25 Jul 2013 13:41
To: ALL
5 of 24
40588.5
I'd also highly recommend
his podcast
, Security Now. He's the guy who actually guessed how the NSA was collecting all the info without needing access to each companies equipment. I look forward to it every week.
From: ANT_THOMAS
25 Jul 2013 13:49
To: Ken (SHIELDSIT)
6 of 24
40588.6
In reply to
40588.4
I'll have a look at those.
Certainly makes a change from having a PC at my old job that had a public IP and all ports in and out accessible! One of the many benefits of working at a university.
From: Ken (SHIELDSIT)
25 Jul 2013 14:01
To: ANT_THOMAS
7 of 24
40588.7
In reply to
40588.6
No doubt, I'd imagine it's a little shock to your system!
From: ANT_THOMAS
25 Jul 2013 14:33
To: Ken (SHIELDSIT)
8 of 24
40588.8
In reply to
40588.7
Considering the only thing stopping my Internet connection not being more than 100/100Mbps was the LAN speed!
From: Ken (SHIELDSIT)
25 Jul 2013 15:11
To: ANT_THOMAS
9 of 24
40588.9
In reply to
40588.8
Wow!
From: ANT_THOMAS
15 Aug 2013 11:09
To: ALL
10 of 24
40588.10
http://portquiz.net/
T
his seems pretty useful. You can stick any port on the end to check if you can access out.