I tried this with tcpdump running on the server. It surprised me when I
saw tcpdump respond. Firefox still says "cannot connect" from an
external workstation, but my server is seeing something at least.
I won't bore you with all of it, but here's the first bit:
$ sudo tcpdump -i eth0 -n "port 80"
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
21:54:16.482166 IP 99.92.208.198.52890 > 10.211.163.215.http: Flags [S],
seq 2014763367, win 8192, options [mss 1460,nop,wscale
2,nop,nop,sackOK], length 0
21:54:16.482251 IP 10.211.163.215.http > 99.92.208.198.52890: Flags
[R.], seq 0, ack 2014763368, win 0, length 0
21:54:16.731133 IP 99.92.208.198.52891 > 10.211.163.215.http: Flags [S],
seq 1148493083, win 8192, options [mss 1460,nop,wscale
2,nop,nop,sackOK], length 0
21:54:16.731183 IP 10.211.163.215.http > 99.92.208.198.52891: Flags
[R.], seq 0, ack 1148493084, win 0, length 0
21:54:17.080885 IP 99.92.208.198.52890 > 10.211.163.215.http: Flags [S],
seq 2014763367, win 8192, options [mss 1460,nop,wscale
2,nop,nop,sackOK], length 0
....{{ sinpage }}....
^C
36 packets captured
36 packets received by filter
0 packets dropped by kernel
The server appears to be trying to give a response. (99.92.208.198 is my
workstation external IP address). It's like FF can't get the response.
Hmm.
On 10/4/2012 1:38 PM, NOSpaze wrote:
On Thu, 2012-10-04 at 12:45 -0700, Mark Space wrote:
Hi all, I'm having a bit of trouble setting up a new web server. The
last time I set up up it went smoothly, but for some reason I can't
connect to the HTTP port on this one.
Any clues what I'm missing?
You are trying to solve a problem with many variables simultaneously (I
can't even understand the purpose of your iptables rules).
Try solving one problem at the time. First: routing. If you can ping
effectively from the outside, routing is ok. Second: tcp ports. Check if
you can find the opened ports. Try debugging the problem with tcpdump.
nmap can help you check for opened ports.
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