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Sebastian Hoitz's questions

Martin Hope
Sebastian Hoitz
Asked: 2012-08-05 11:41:41 +0800 CST
  • 1

I have a debian server that acts as a wifi router and DHCP and FTP server.

I want to connect to this server using a Canon Wireless File Transmitter.

I can connect and receive an IP address. I can verify this in syslog:

Aug  4 21:37:02 box-3 hostapd: wlan0: STA 00:00:85:ff:81:cc IEEE 802.11: authenticated
Aug  4 21:37:02 box-3 hostapd: wlan0: STA 00:00:85:ff:81:cc IEEE 802.11: associated (aid 2)
Aug  4 21:37:02 box-3 hostapd: wlan0: STA 00:00:85:ff:81:cc RADIUS: starting accounting session 501D7991-00000002
Aug  4 21:37:02 box-3 dhcpd: DHCPDISCOVER from 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPOFFER on 10.10.0.24 to 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPDISCOVER from 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPOFFER on 10.10.0.24 to 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPREQUEST for 10.10.0.24 (10.10.0.1) from 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPACK on 10.10.0.24 to 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPREQUEST for 10.10.0.24 (10.10.0.1) from 00:00:85:ff:81:cc via wlan0
Aug  4 21:37:02 box-3 dhcpd: DHCPACK on 10.10.0.24 to 00:00:85:ff:81:cc via wlan0

However, the File Transmitter seems to have problems discovering or connecting to the FTP server.

When I try pinging the IP address I sometimes can reach the file transmitter, and after that the connection is open and the file transmitter can reach the FTP server.

But this does not always work.

I tried tcpdumping all the traffic on my wlan0 device, but all I got was some ARP requests.

What are some ways I can debug this?

networking
Martin Hope
Sebastian Hoitz
Asked: 2011-05-10 07:18:53 +0800 CST
  • 1

I would like to make my UnitTests available to see via the browser.

My directory structure looks like this:

application
docs
public
 - index.php
tests

My DocumentRoot is in the public folder. However, when I try to add an alias /source to my Apache configuration and set add the type php-source to the .php files (instead of just .phps) Apache still tries to execute the files.

Is there a smart way to do this?

php apache-2.2 source documentation
Martin Hope
Sebastian Hoitz
Asked: 2010-10-07 01:21:39 +0800 CST
  • 0

I read, that APC causes Apache to throw Segmentation faults.

Is this error still valid? I'm asking because we have a web application (PHP) that is used at a local fair and currently has a lot of usage.

We have no problems with memory consumption (currently 1 GB out of 8GB used) but we have quite a lot of CPU usage.

Would an opcode cache help reduce CPU usage? Or should I increase the apache number of apache forks?

php apache-2.2 opcode
Martin Hope
Sebastian Hoitz
Asked: 2010-02-24 11:30:25 +0800 CST
  • 0

Here is our problem:

We have several webservers, which should be reached from public. The database servers that store the data for the web apps on those webservers though shall not have a public IP.

So, since I want to be able to connect to the SQL servers using ssh for example, and those servers need to talk with each other, I had this idea:

Internet
|
------------------
|                |
Webserver 1      Webserver 2     Database Server
|                |               |
-------------- vLAN --------------
|
PPTP
|
Workstation (my PC)

My idea was that I can connect to the vLAN using PPTP so that I have access to all servers in that LAN, but the database server remains unvisible to the public.

Is this infrastructure a good idea?

network-design