Not able to open site http://sec-mooc-1.cs.helsinki.fi:7831/ on chapter 2

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Not able to open site http://sec-mooc-1.cs.helsinki.fi:7831/ on chapter 2 #23

Closed subratrout closed 7 years ago

subratrout commented 7 years ago

Not sure this is the right place to post. But I can't access http://sec-mooc-1.cs.helsinki.fi:7831/ which is mentioned on ch-2 "The Byteless are coming to town!".

nygrenh commented 7 years ago

Sounds weird. The link you provided opens just fine on my machine.

subratrout commented 7 years ago

I am from US and using a wireless connection. Does it make any difference?

nygrenh commented 7 years ago

It should not. The site should be reachable from there too. Can you provide the error message your browser is giving? (or the output of curl -v http://sec-mooc-1.cs.helsinki.fi:7831/ if you have curl on your machine)

subratrout commented 7 years ago

Trying 86.50.18.10...
connect to 86.50.18.10 port 7831 failed: Connection refused
Failed to connect to sec-mooc-1.cs.helsinki.fi port 7831: Connection refused
Closing connection 0 curl: (7) Failed to connect to sec-mooc-1.cs.helsinki.fi port 7831: Connection refused

nygrenh commented 7 years ago

That's weird. What happens if you try to ping the machine? (ping sec-mooc-1.cs.helsinki.fi) Can you reach cs.helsinki.fi?

subratrout commented 7 years ago

64 bytes from 86.50.18.10: icmp_seq=0 ttl=42 time=175.921 ms 64 bytes from 86.50.18.10: icmp_seq=1 ttl=42 time=176.593 ms 64 bytes from 86.50.18.10: icmp_seq=2 ttl=42 time=175.826 ms 64 bytes from 86.50.18.10: icmp_seq=3 ttl=42 time=175.774 ms 64 bytes from 86.50.18.10: icmp_seq=4 ttl=42 time=176.084 ms

subratrout commented 7 years ago

--- sec-mooc-1.cs.helsinki.fi ping statistics --- 95 packets transmitted, 93 packets received, 2.1% packet loss round-trip min/avg/max/stddev = 175.364/177.121/206.728/3.540 ms

nygrenh commented 7 years ago

What's your internet service provider? Does it block access to unusual ports? Can you access http://sec-mooc-1.cs.helsinki.fi:50001/?

subratrout commented 7 years ago

I can access http://sec-mooc-1.cs.helsinki.fi:50001 from my phone but not from my computer. So I think my network provider is blocking it.

nygrenh commented 7 years ago

Since your ISP seems to be the source of the problem, I recommend either looking into tethering options or getting a VPN.

subratrout commented 7 years ago

Yes, will do that. Thank you.