Re: port :80 and my ISP
On Tue, 10 Dec 2002 12:39:11 +0000 (UTC)
"Miquel van Smoorenburg" <firstname.lastname@example.org> wrote:
> In article <[🔎] email@example.com>,
> Shawn Lamson <firstname.lastname@example.org> wrote:
> >worked - it said port 80 is closed, but how can i tell if there is
> >something on my computer closed it or if the ISP closes it? Maybe a
> >program that will tell me it has received requests or packets on that
> >port, something that runs on my machine.
> # tcpdump -i eth0 tcp port 80
> (replace eth0 by the interface your cable connection is on)
Thanks - i tried it and here is what i get:
[shawnl]# telnet 188.8.131.52 80
[shawnl]# telnet 184.108.40.206 23
telnet: Unable to connect to remote host: Connection refused
[shawnl]# telnet 220.127.116.11 8000
Connected to 18.104.22.168.
Escape character is '^]'.
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<title>501 Method Not Implemented</title>
<h1>Method Not Implemented</h1>
<p>login to /index.html not supported.<br />
<address>Apache/2.0.43 Server at 22.214.171.124 Port 8000</address>
Connection closed by foreign host.
I get action from tcpdump when listening on port 8000 but nada on 80; is it safe to assume that it is blocked by an OUTSIDE source? I get results from tcpdump on ports 22 23 25 8000 but nothing on 80...
The other weird thing is that i used a "dynamic IP redirection" service
from no-ip.com and it hits my page - the weird part is even when i monitor port 8000 and access my page I don't see anything from tcpdump
when accessing the page that way. Here is the command I used
#tcpdump -i ppp0 tcp port X
Thank you for your help,