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For about 2 weeks now, I have not been able to connect to any services (httpd, mysql, ssh, etc..) on my server remotely. I can access everything from inside the local network just fine.

I thought maybe the ISP started blocking some ports so I set up a XAMPP install on a different local machine. I redirected httpd and sql ports to that machine and was able to access them from outside the network just fine. This leads me to believe it is an issue with the server.

I'm a little confused though as I was able to access the server remotely just fine up until about 2 weeks ago.

The server is running Fedora Core 15.

If I need to post some diagnostic output or anything let me know and I'll add it to the post.

Any help would be appreciated!

EDIT: UPDATE:

It turns out I am unable to see the internet from the server as well.

route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.1.10.0       0.0.0.0         255.255.255.0   U     1      0        0 p8p1
0.0.0.0         10.1.10.1       0.0.0.0         UG    0      0        0 p8p1
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  • can you ping the server by its hostname from remote network? what does "nmap -sS hostname" comes up with? oh okay so no connection to WAN from the server? Aug 21, 2013 at 2:24
  • I can ping the server remotely. nmap shows ths host as down, but run with -Pn shows it as up with all ports being filtered Aug 21, 2013 at 2:31
  • Can you stop iptables daemon just for test? Aug 21, 2013 at 2:45
  • Brought iptables down, still have same results Aug 21, 2013 at 2:54
  • is that host in AWS or rackspace or whatever cloud? Aug 21, 2013 at 3:03

1 Answer 1

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Verify that the server has the correct IP address set as its default gateway. Also verify its subnet mask.

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  • Looks like the ip and mask is set correctly Aug 21, 2013 at 3:59
  • All the symptoms you describe intricate a routing problem. You checked the default gateway, correct? That value is key for this server to be able to communicate outside its subnet.
    – EEAA
    Aug 21, 2013 at 4:07
  • I updated the post with the output of route -n Aug 21, 2013 at 4:15

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