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I want to setup a web server. I'v already obtained static IP and I have debian server running with apache+nginx. And, I want to make my webserver visible from outside of the office.

Here I have following scheme of routers -

  1. Provider router(or modem?), which gets phone connection and gives internet to whole office.
  2. Router(TP-Link TL-R860) which connects to router 1.
  3. WI-FI Router (TRENDNET TEW-652BRP), which connects to router 2.
  4. Web server, which connects to router 3.

It is possible at all somehow to get what I want or for example, I need to somehow reconfigure all connections?

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Maybe, but you'd be much better off connecting the server to #2, or directly to the modem. –  Chris S Feb 27 '12 at 14:36
    
Please don't say that the reason your server is connecting to the "wi-fi router" is because the server is connecting wirelessly. –  RobM Feb 27 '12 at 15:22
    
@RobMoir No, it is connected via wire. –  Jevgeni Smirnov Feb 28 '12 at 6:08
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1 Answer

up vote 1 down vote accepted

Disconnect the webserver from the wifi router.

Connect the webserver to the ISP modem/router.

Configure a DMZ on the ISP modem/router and configure your webserver to be in that DMZ.

Set up a firewall using iptables on the web server to deny all traffic except the web traffic (port 80, 443, 22 for outside access maybe?). Package arno-iptables-firewall helps with automating iptables firewall, or the lenny package ipmasq which still works on squeeze, you just have to download it yourself and dpkg -i it.

If you decide to open port 22 for ssh access to the internet then install fail2ban to discourage brute force attacks. Also consider to only allow password-less entry using keys.

Note: Do NOT use NAT if you can help it. It's not any more secure and it's a bad hack to work around lack of IP addresses in IPv4. Thank goodness we won't need that nonsense on IPv6.

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Thank you, for your answer. As fast as I check, I leave feedback. –  Jevgeni Smirnov Feb 28 '12 at 6:09
    
Ok. DMZ thing worked. –  Jevgeni Smirnov Feb 28 '12 at 12:14
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