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• Authentication required by wireless network

  - by Roman

  I would like to use a wireless network from Ubuntu. In the network drop-down menu I select a network (this is a University network I have an account there). Then I get a windows with the following fields: Wireless Security: [WPA&WPA2 Enterprise] Authentication: [Tunneled TLS] Anonymous Identity: [] CA Certificate: [(None)] Inner Authentication: [some letters] User Name: [] Password: [] I put there my user name and password and do not change default value and leave "Anonymous Identity"blank. As a result of that I get "Authentication required by wireless network". How can I solve this problem? I think it is important to notice that our system administrator tried to find some files (which are probably needed to be used as "CA Certificate"). He said that he does not know where this file is located on Ubuntu (he support only Windows). So, probably this is direction I need to go. I need to find this file. But may be I am wrong. May be something else needs to be done. Could you pleas help me with that?

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• Windows + Django + mod_wsgi = "DLL load failed"

  - by Kyle MacFarlane

  For a long time I was using Python 2.5 to do all this fine but recently upgraded to 2.7 since building stuff for 2.5 is a real pain. I also updated mod_wsgi to 3.3 for Python 2.7. Everything is working fine with Apache + mod_wsgi on CentOS and also in the Django runserver on both Windows and CentOS, but not with Apache + mod_wsgi on Windows. Whenever I try to access a page in my Django app I get the following (note that Apache starts fine): ImportError at / DLL load failed: The specified module could not be found. Which is caused by things like: from Crypto.Cipher import AES Etree and others cause the exact same error and it is not limited to any specific packages. Anything with pyd files fails. Googling around suggests reinstalling Python "for all users", but the installer doesn't give you that option anymore anyway. For good measure I've tried reinstalling Python 2.7 as an administrator and also told it to register itself as the default version of Python but neither helped. I think the solution might have something to do with: The fact that I have 2.5, 2.6 and 2.7 installed on this machine and mod_wsgi might be loading the DLLs for 2.5 instead of 2.7. Something to do with WSGIPythonPath, which I usually don't need to set.

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• What performance degradation to expect with Nginx over raw Gunicorn+Gevent?

  - by bouke

  I'm trying to get a very high performing webserver setup for handling long-polling, websockets etc. I have a VM running (Rackspace) with 1GB RAM / 4 cores. I've setup a very simple gunicorn 'hello world' application with (async) gevent workers. In front of gunicorn, I put Nginx with a simple proxy to Gunicorn. Using ab, Gunicorn spits out 7700 requests/sec, where Nginx only does a 5000 request/sec. Is such a performance degradation expected? Hello world: #!/usr/bin/env python def application(environ, start_response): start_response("200 OK", [("Content-type", "text/plain")]) return [ "Hello World!" ] Gunicorn: gunicorn -w8 -k gevent --keep-alive 60 application:application Nginx (stripped): user www-data; worker_processes 4; pid /var/run/nginx.pid; events { worker_connections 768; } http { sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; upstream app_server { server 127.0.0.1:8000 fail_timeout=0; } server { listen 8080 default; keepalive_timeout 5; root /home/app/app/static; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://app_server; } } } Benchmark: (results: nginx TCP, nginx UNIX, gunicorn) ab -c 32 -n 12000 -k http://localhost:[8000|8080]/ Running gunicorn over a unix socket gives somewhat higher throughput (5500 r/s), but it still does't match raw gunicorn's performance.

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• How do I install a different OS on a Compaq Presario cq56 with preinstalled SuSE 11?

  - by McCoy

  Thing is, I don't have a clue of Linux systems, I usually use WinXP. Bought a notebook with SuSE 11 on it, because I have my XP licence and thought I could install that if I found the chipset drivers for the hardware (which I'm not completely sure I have the right versions of). Then I thought I'd give it a shot with the SuSE, looked nice enough. But I can't get my external hd to work (tried force mount) and the banshee doesn't do anything like playing video. Since that is one of the two main purposes of this notebook, I need to get that to work. Tried downloading VLC player, but that only works with SuSE 11.1 upwards. So I downloaded a SuSE 11.3 and burned the iso. But surprise, no way the notebook would boot from cd. Same with the XP cd (considered setting up a dual boot). And no, I can't get to BIOS to reset to default, either. So I can basically do nothing else than going online with this thing and that's not enough for me (gamer in withdrawal, yikes!). I need at least to get to my firefox profile on the external hd and be able to watch video. Can somebody please help me? I think at this point I'd prefer to install XP and MAYBE the SuSE 11.3 after that. I'm not a native speaker, so please speak plainly, thanks. :) Edit: if this is impossible, could someone please help me with the external hd mount and video playback? Edit: Found out how to boot from cd by now. But still no XP, because I get bluescreen after bluescreen while setup is loading files. I guess it's the missing SATA drivers...

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• Server 2003 R2 - II6- granting access to website via IP with subnet range

  - by John

  We are trying to allow for a client to connect to our website. By default we are Denying all access except for those with the specified IPs we have configured to run, everything before has just been a single IP address. However now we must implement a range of IPs and rather than input thousands of records we want to use the group of computer options in the Grant Access page. However we have it configured to work off of the IP 72.21.192.0 with a subnet mask of 255.255.224.0 They are unable to connect. Looking over our IIS logs they are receiving a 302 error which is the same behavior anyone should get whom is unauthorized to view the page in question. The IP address coming in is 72.21.217.2, so it should be well within the rage of acceptable IP addresses. I'm at a loss as everything I look up tells me to do what we are doing. So any insight would be appreciated. Especially because I'm a software guy not hardware. Thanks!

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• IIS7 ASP.NET application - 2 identical apps in 2 identical app pools, 1 is responsive and 1 is not

  - by Ben

  I have an ASP.NET (v4.0) web app that is installed in a virtual directory (as an application) and is hosted in it's own app pool. This is repeated for each instance of the app (i.e. per customer). The app pools are integrated (not classic) mode and LoadUserProfile is set to true. Otherwise, default settings. Each instance currently has it's own copy of the code/config, and it's own data folder (basic file read/writes). 1 instance of this app runs well (operation used for comparison takes ~4 seconds). Every other instance runs slowly (from 10-25 seconds for the same operation). If I move the slower instance to the "fastest" app pool that instance springs to life. If I move the faster instance into the slower app pool that instance slows to a crawl. The app pools were created in the same way initially - manually. I later used the powershell copy routine to ensure an exact copy of the faster app pool and still the same behaviour. Comparing the apppool.config files shows they are identical barring the virtual directory assignments. There are no shared resources that are being blocked, so far as I can tell, and I tested that by shutting down the performant app pool and restarting... slow is still slow, and then when I restart that app pool (so it's loaded last) it's still faster...

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• How do I enable additional debugging output from Ansible and Vagrant?

  - by Brian Lyttle

  I'm investigating Ansible for server and application provisioning. My application is currently provisioned with shell scripts in Vagrant. Rather than rewrite my scripts I've taken a sample and attempted to deploy it. It appears to deploy fine, but I've seeing a failure message after what looks like a series of successful steps: » vagrant provision ~/vm/blvagrant 1 ? [default] Running provisioner: ansible... PLAY [web-servers] ************************************************************ GATHERING FACTS *************************************************************** ok: [192.168.9.149] TASK: [install python-software-properties] ************************************ ok: [192.168.9.149] => {"changed": false, "item": ""} TASK: [add nginx ppa if it ubuntu 10.04 and up] ******************************* ok: [192.168.9.149] => {"changed": false, "item": "", "repo": "ppa:nginx/stable", "state": "present"} TASK: [update apt repo] ******************************************************* ok: [192.168.9.149] => {"changed": false, "item": ""} TASK: [install nginx] ********************************************************* ok: [192.168.9.149] => {"changed": false, "item": ""} TASK: [copy fixed init for nginx] ********************************************* ok: [192.168.9.149] => {"changed": false, "gid": 0, "group": "root", "item": "", "mode": "0755", "owner": "root", "path": "/etc/init.d/nginx", "size": 2321, "state": "file", "uid": 0} TASK: [service nginx] ********************************************************* ok: [192.168.9.149] => {"changed": false, "item": "", "name": "nginx", "state": "started"} TASK: [write nginx.conf] ****************************************************** ok: [192.168.9.149] => {"changed": false, "gid": 0, "group": "root", "item": "", "mode": "0644", "owner": "root", "path": "/etc/nginx/nginx.conf", "size": 1067, "state": "file", "uid": 0} PLAY RECAP ******************************************************************** 192.168.9.149 : ok=8 changed=0 unreachable=0 failed=0 Ansible failed to complete successfully. Any error output should be visible above. Please fix these errors and try again. How do I go about getting additional debug information? I've already added ansible.verbose = true to my vagrant config which results in the dictionaries being displayed within the output above.

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• DD-WRT Acces Point as a Router

  - by Dzh

  Following suggestion to this question asked on Network Engineering, I am asking the question here. this is an extension to my previous question (I think it was deleted), where I was claiming that DDWRT was disabling it's DHCP server once connected to the network. I was wrong, as it now seems that it is bridging itself with another parallel connected wireless router. I have two Draytek 2820 and one Netgear WG602v3 with latest DDWRT. Lets call one wired-Draytek and it has wireless disabled. The other one, let's call it wireless-Draytek, is connected to wired-Draytek and has wireless with MAC filtering enabled. Once I connect Netgear to the wired-Draytek, the client that connects to Netgear, will be assigned with IP address from the wireless-Draytek. If the MAC address is not on the wireles-Draytek, the client is unable to obtain IP address and has no connectivity at all, even with manually assigned static IP configuration. To illustrate further, this is how network is set up: wired-Draytek ---------- wireless-Draytek \_________ Netgear What I wish to have, is that Netgear issues IP addresses from it's own IP pool and ignores the MAC filtering rules from wireless-Draytek. This is kind of puzzling how this they are bridging (if they are) themselves automatically. Thanks. UPDATE: It's not a home network. I gave you a bit simplified set-up. If there is a better site on Stack Exchange to ask this, please let me know. The Drayteks are running stock firmware, it's only Netgear that I've flashed to get more stability. In addition to these routers, I have also three 3COM Baseline switch 2824, and another Draytek router with Prosafe FS752TP PoE switch dedicated for VoIP phones. Wired-Draytek has IP 10.0.0.1, DHCP disabled as there is AD DC which is issuing IP addresses. Wireless-Draytek has IP 1.1.1.1 and DHCP enabled. Netgear has default - 192.168.1.1. As per suggestion, the specific question is - how do I isolate these two wireless routers?

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• How do I change the Dropbox directory on a headless GNU/Linux server?

  - by DrTwox

  I have installed Dropbox 2.0.0 via command line on my home server (Ubuntu Server 12.04) to use for off-site automated backups, but I can't change the directory that the Dropbox daemon keeps synced. I've tried the following: The official docs say to use the desktop application, which is not applicable in my situation. However I installed the desktop app on my desktop machine and changed the default folder location, but I can't find where this change is stored in the ~/.dropbox/ directory so I can make the same change on the server. This page (and several others) recommends a Python script to do the job. Looking at the script, it opens a SQLite database called ~/.dropbox/dropbox.db, which does not exist on my Dropbox install, leading me to believe the script is out-of-date. This forum thread suggests manually inserting the required row in the config.db database, which I did, but it made no difference. I checked the same database file on my desktop machine, and it does not have the dropbox_path key, so I'm presuming the information in that thread is also out of date for version 2.0. I have tried to launch the Dropbox GUI configuration wizard over SSH with X11 forwarding, as suggested in one of the answers, but the binary must detect the absence of a local X11 install and it starts a command line daemon instead, which provides no means to change the option I need. I am currently using a symlink, as suggested as an answer, but this is a kludge. I would like to know the correct way to make the change. How do I change the Dropbox directory on a headless GNU/Linux server? Update: I've ditched Dropbox and started using Copy. Their Linux tools and support is far superior to Dropbox. I leave this question here in case someone, someday, can answer it.

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• How to access a port via OpenVpn only

  - by Andy M

  I've set up an openvpn server alongside an apache website that can only be accessed on port 8100 on the same machine. My /etc/openvpn/server.conf file looks like this: port 1194 proto tcp dev tun ca ./easy-rsa2/keys/ca.crt cert ./easy-rsa2/keys/server.crt key ./easy-rsa2/keys/server.key # This file should be kept secret dh ./easy-rsa2/keys/dh1024.pem # Diffie-Hellman parameter server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt # make sure clients can still connect to the internet push "redirect-gateway def1 bypass-dhcp" keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 3 Now I tried to let only clients connected to the vpn network access the website on apache via port 8100. So I defined a few iptables rules: #!/bin/sh # My system IP/set ip address of server SERVER_IP="192.168.0.2" # Flushing all rules iptables -F iptables -X # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP # Allow incoming access to port 8100 from OpenVPN 10.8.0.1 iptables -A INPUT -i tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT # outgoing http iptables -A OUTPUT -o tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT Now when I connect to the server from my client computer and try to access the website on 192.168.0.2:8100, my browser can't open it. Will I have to forward traffic from tun0 to eth0? Or is there anything else I'm missing?

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• Setting up vsftpd, hangs on list command

  - by Victor

  I installed vsftpd and configured it. When I try to connect to the ftp server using Transmit, it manages to connect but hangs on Listing "/" Then, I get a message stating: Could not retrieve file listing for “/”. Control connection timed out. Does it have anything to do with my iptables? My rules are as listed: *filter # Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0 -A INPUT -i lo -j ACCEPT -A INPUT ! -i lo -d 127.0.0.0/8 -j REJECT # Accepts all established inbound connections -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Allows all outbound traffic # You can modify this to only allow certain traffic -A OUTPUT -j ACCEPT # Allows HTTP and HTTPS connections from anywhere (the normal ports for websites) -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT -A INPUT -p tcp -m tcp --dport 21 -j ACCEPT # Allows SSH connections # # THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE # -A INPUT -p tcp -m state --state NEW --dport 30000 -j ACCEPT # Allow ping -A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT # log iptables denied calls -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 # Reject all other inbound - default deny unless explicitly allowed policy -A INPUT -j REJECT -A FORWARD -j REJECT COMMIT

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• Java Deployment and Configuration (1.6.0_21)

  - by user125137

  Sofware: Java Runtime Environment 1.6.0_21 OS: Windows XP Professional 32-Bit, SP3 Situation: a new piece of web based software is being deployed this week and prior to this all the company desktops need to be set up to meet the requirements of this software. One of these requirements is JRE 1.6.0_21. I have successfully scripted the removal of all other Java versions and the installation of the required version, however I cannot get it configured properly. One of the requirements is that the Java console be set to disabled - if it is not it can cause an issue with a particular function. I have pushed out a deployment.config and deployment.properties but the console just will not disable itself.. I know the config is being read correctly because the update tab is being correctly disabled and removed. deployment.config: deployment.system.config=file\:C\:/WINDOWS/Sun/Java/Deployment/deployment.properties deployment.system.config.mandatory=true deployment.properties: #deployment.properties #Fri Jun 15 09:34:31 EST 2012 deployment.version=6.0 deployment.console.startup.mode=DISABLE deployment.javaws.autodownload=NEVER deployment.javaws.autodownload.locked= There is no change if I set the console to ENABLE either - it remains on the default of hidden. I'm sure I can disable the console with a registry change of some form but my preference is to have it done via the deployment files as it gives the option of centralising the properties file to a network share if we wish. If anyone has any suggestions it would be appreciated.

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• WebHost Manager - Apache's VHost isn't matching the DNS entry

  - by Trans

  I've used CPanel's WebHost Manager to create a new host on my VPS. I then used my HOSTS file to point fake.com to the relevant IP address. The problem I'm having now is, Apache isn't recognizing the VHost,or something, as it's just loading the default entry and 404'ing every document I try to GET. Here's the VHost entry NameVirtualHost 0.0.0.209:80 NameVirtualHost 0.0.0.211:80 <VirtualHost 0.0.0.209:80> ServerName fake.com ServerAlias www.fake.com DocumentRoot /home/fakecom/public_html ServerAdmin [email protected] ## User fakecom # Needed for Cpanel::ApacheConf <IfModule mod_suphp.c> suPHP_UserGroup fakecom fakecom </IfModule> <IfModule !mod_disable_suexec.c> SuexecUserGroup fakecom fakecom </IfModule> CustomLog /usr/local/apache/domlogs/fake.com-bytes_log "%{%s}t %I .\n%{%s}t %O ." CustomLog /usr/local/apache/domlogs/fake.com combined Options -ExecCGI -Includes RemoveHandler cgi-script .cgi .pl .plx .ppl .perl ScriptAlias /cgi-bin/ /home/fakecom/public_html/cgi-bin/ </VirtualHost> I've Google'd this profusely and all that's being returned is 'DNS errors. Wait for it to propagate'. That's obviously not my problem, since I'm using HOSTS. What else could be causing this? :/ EDIT: Forgot to mention. http://fake.com/~fakecom/test.html loads just fine. So the fake.com is pointing to the right IP.

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• Flickering dual screens in Virtual Box Ubuntu 13.10 Guest

  - by alexleonard

  I have Ubuntu 13.10 x64 installed as a guest in VirtualBox (under a Windows 8.1 host) and have the settings for the virtual machine setup to run with a monitor count of 2, 128MB video memory and 3D acceleration enabled. In my guest I have the virtual box additions installed (which allowed me to have two 1920x1080 screens). Here's a screenshot of my VM settings. My laptop is an Asus N550JV which has both Intel's HD Graphics 4600 GPU and Nvidia's GeForce GT 750M. By default though I believe the Intel GFX card is being used to render the VM. When I boot up the VM it loads perfectly on dual screens, however whenever I move the mouse from one screen to the other (I have a Dell S2340L running over a HDMI connection as a second screen) the screen flickers. I've tried a variety of settings changes in both Ubuntu and the VM settings, but cannot seem to stop this screen flicker. I also used the NVidia control panel in Windows to force the dedicated graphics card to always be used but found that the display driver sometimes crashed whilst working in the VM, resulting in my VM session being destroyed, so I figured it's better to stick with the Intel GFX as that appears to be more stable. I also tried without 3D acceleration but that was much worse, and if I ran the VM with a low amount of graphics memory it really struggled. Here's my dmesg output: http://pastebin.com/1LJuYWMj (not sure if this is helpful in this situation). I read some posts suggesting changes to /etc/X11/xorg.conf but I don't appear to have an xorg.conf file. There were also a few posts (though related to Synergy) suggesting running xset -dpms but this command doesn't appear to have had any effect for me. As an additional note, I'm finding that window drawing in the guest is a little laggy/glitchy. For example, quickly scrolling through a web page may result in parts of the viewport displaying original content. Certainly I notice drawing issues most in the web browser, but it also impacts other software with parts of the window not being drawn when, say, switching between accounts in thunderbird. Any suggestions greatly appreciated!

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• Virtual host redirects to localhost in Ubuntu

  - by Salman

  I have recently configured Virtual Host in my Ubuntu 11.10. But whatever site i type, it always redirects to the localhost page. This is my "our-test-site" file: <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/zftut/public <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/zftut/public/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> and this is my, "etc/hosts" file: 127.0.0.1 localhost 127.0.0.1 our-test-site.local 127.0.0.1 zftut.local 127.0.1.1 System.B System Now when I try to go for "zftut.local", it redirects me to localhost page, showing me this: It works! This is the default web page for this server. The web server software is running but no content has been added, yet. What am I doing wrong? I refered "this" tutorial for setting up virtual host.

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• I would like to edit the layout of my keyboard just a bit - what's the best way?

  - by Codemonkey

  I'm using an Apple keyboard which has some annoyances compared to other keyboards. Namely, the Alt_L and Super_L keys are swapped, and the bar and less keys are swapped ("|" and "<"). I've written an Xmodmap file to swap the keys back: keycode 49 = less greater less greater onehalf threequarters keycode 64 = Super_L NoSymbol Super_L keycode 94 = bar section bar section brokenbar paragraph keycode 108 = Super_R NoSymbol Super_R keycode 133 = Alt_L Meta_L Alt_L Meta_L keycode 134 = Alt_R Meta_R Alt_R Meta_R I did this by identifying the keys using xev and the default modmap xmodmap -pke and swapping the keycodes. xev now identifies all my keys as correct, which is awesome! I can also use the correct keys to type the bar and less than symbols. (I followed this answer on askubuntu: http://askubuntu.com/q/24916/52719) But it seems the change isn't very deep. For instance, the Super key is now broken in the Compiz Settings Manager. No shortcuts involving the Super key works (but the Alt key does). Also the settings dialog for Gnome Do doesn't heed the changes in xmodmap, and I can't open the Gnome Do window anymore if I use any of the remapped keys. So to summarize, everything broke. I would like a deeper way of telling Ubuntu (or any other Linux distro for that matter) which keys are which on the keyboard. Is there a way to edit the Keyboard Layout directly? I'm using the Norwegian Bokmål keyboard layout. Does it reside in a file somewhere I could edit? Any comments, previous experiences or relevant stray thoughts would be greatly appreciated - Thanks

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• Intermittent extrememly long response times when downloading documents

  - by pap

  I have a Java web application running om Tomcat 7 with an Apache httpd 2.2 fronting with mod_jk/AJP. One part of the application is serving files (up to 4mb size). Now, normally this all runs very smooth with stable, low response-times. However, in rare instances (<0.1% of downloads), the downloadtime will go beyond 1 minute. After activating the ThreadStuckValve in Tomcat, I can see that the long responses seem to be stuck at org.apache.tomcat.jni.Socket.sendbb(Native method) i.e network I/O. At most, these long-running downloads take 5 minutes, which I strongly suspect is because of the default 300 second timout in Apache 2.2 (http://httpd.apache.org/docs/2.2/mod/core.html, "TimeOut directive"). To me, this looks like network problems. The Apache timeout (if that is what is kicking in at the 5 minute mark) indicates that ACK packets are not being transmitted correctly. My questions are what could be causing this? Closed browser at receiving end but socket not signaled as closed properly? Packet loss or some other network failure in transit? Where would I start troubleshooting this? We're running Tomcat and Apache on Windows server 2008-R2 in a vmware virtualized server.

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• fwbuilder/iptables manually scripted + autogenerated rules at startup?

  - by Jakobud

  Fedora 11 Our previous IT-guy setup iptable rules on our firewall in a way that is confusing me and he didn't document any of it. I was hoping someone could help me make some sense of it. The iptables service is obviously starting at startup, but the /etc/sysconfig/iptables file was untouched (default values). I found in /etc/rc.local he was doing this: # We have multiple ISP connections on our network. # The following is about 50+ rules to route incoming and outgoing # information. For example, certain internal hosts are specified here # to use ISP A connection while everyone else on the network uses # ISP B connection when access the internet. ip rule add from 99.99.99.99 table Whatever_0 ip rule add from 99.99.99.98 table Whatever_0 ip rule add from 99.99.99.97 table Whatever_0 ip rule add from 99.99.99.96 table Whatever_0 ip rule add from 99.99.99.95 table Whatever_0 ip rule add from 192.168.1.103 table ISB_A ip rule add from 192.168.1.105 table ISB_A ip route add 192.168.0.0/24 dev eth0 table ISB_B # etc... and then near the end of the file, AFTER all the ip rules he just declared, he has this: /root/fw/firewall-rules.fw He's executing the firewall rules file that was auto-generated by fwbuilder. Some questions Why is he declaring all these ip rules in rc.local instead of declaring them in fwbuilder like all the other rules? Any advantage or necessity to this? Or is this just a poorly organized way to implement firewall rules? Why is he declaring ip rules BEFORE executing the fwbuilder script? I would assume that one of the first things the fwbuilder script does it get rid of any existing rules before declaring all the new ones. Am I wrong about this? If that was the case, the fwbuilder script would basically just delete all the ip rules that were defined in rc.local. Does this make any sense? Why is he executing all this stuff at startup in rc.local instead of just using iptables-save to keep the firewall settings at /etc/sysconfig/iptables that will get implemented at runtime?

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• Apache directory authorization bug (clicking cancel gives acces to partial content)

  - by s4uadmin

  I got a minor problem (as the site is not high priority) but still a very interesting one. I have an apache root domain wherein other sites live "/var/www/" And I have foo.example.com forwarding to "/var/www/foo-example" (wordpress site) The problem here is that when you go to foo.example.com you are prompted to enter credentials. If you hit cancel it gives you the access denied page. But when you go to the servers' direct IP (this gives you the default index page) and hit cancel when prompted for credentials it just keeps giving you the login screen, and after pressing cancel a few times more it gives (a perhaps cached) bare html part of the page. How do I prevent this from happening? Perhaps this is a bug... Even if I would block access to the root directory when going to the ip/foo-example it would still do this. And I want to keep all the directories within the www directory or at least all in the same. Thanks PS: here is my configuration: <VirtualHost *:80> DocumentRoot /var/www/wp-xxxxxxx/ ServerName beta.xxxxxxxxx.nl <Directory "/var/www/wp-xxxxxxxxx/"> Options +Indexes AuthName "xxxxxxxx Beta Site" AuthType Basic require valid-user Satisfy all AuthBasicProvider file AuthUserFile /var/www/wp-xxxxxxx/.htxxxxxxxxx order deny,allow allow from all </Directory> ServerAdmin [email protected] ServerAlias beta.xxxxxxx.nl </VirtualHost>

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• How to change .htaccess file to work right in localhost?

  - by Manolo Salsas

  I have this snippet code in my .htaccess file to prevent users from hotlinking the server's images: RewriteEngine On RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^http://(www.)?itransformer.es/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://itransformer.es [R,L] Of course, it is not working in my localhost, but don't know how to achieve it. My guess is that I should change the domain name with any wildcard. Any idea? Update I've finally found out the answer thanks to @Chris solution: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} ^https?://%{HTTP_HOST}/.*/usuarios/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://%{HTTP_HOST} [R=301,L] The /usuarios/ directory is because I only want to deny direct access to files inside this directory. Update2 For some reason, it doesn't work again. Finally I think that I found out a better solution: RewriteCond %{REQUEST_FILENAME} .*/usuarios/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://%{HTTP_HOST} [R=301,L] I say better solution because what I want to deny is direct access to a file (image). Update3 Well, after a while I discovered above wasn't exactly what I wanted, so the next is definitive: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^https?://itransformer.*$ [NC] RewriteRule /usuarios/.*\.(gif|jpe?g|png|wbmp)$ - [R=404,L] Just two doubts: If I change the above to: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^https?://%{HTTP_HOST}.*$ [NC] RewriteRule /usuarios/.*\.(gif|jpe?g|png|wbmp)$ - [R=404,L] it doesn't work. I don't understand why, because %{HTTP_HOST} is equal to itransformer in my localhost, and it should work. The second doubt is why is shown the default 404 page and not my custom page (that is shown in all other 404 responses).

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• Ubuntu 12.10, Unity, AMD 12.11 beta drivers, AMD APP SDK 2.7 and OpenCL detection of multiple gpus

  - by junkie

  I'm using Ubuntu 12.10, AMD 12.11 beta drivers, AMD APP SDK 2.7 and OpenCL. I have three amd radeon 7990s plugged in each of which are a dual 7970 so I have six gpus altogether. I plan to go up to eight in a few days. Windows couldn't use even 4 but linux works fine with 6 so far. The strange thing is that the six gpus are only detected by OpenCL in unity (the ubuntu default window manager). If I switch to e17, blackbox or fluxbox or anything else for that matter OpenCL only detects one. I'm using a simple OpenCL program to list all devices to check. I've also checked the output of aticonfig --list-adapters, fglxinfo and clinfo. The first two always show six in all window managers wheras clinfo shows 6 in unity but 1 gpu in all other WMs. I'm also using an X config generated by aticonfig --initial -f --adapter=all. I'm also only using one monitor. I've also checked using lsmod that the fglrx module is loaded in all WMs. So I have two questions. Why does OpenCL see six gpus only in unity? How can I enable six gpus on other lightweight WMs? Basically I'm getting at what determines how many gpus the OpenCL runtime sees? Thanks.

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• Unable to access site over HTTPS using self signed certificate

  - by James

  I am developing a REST API which I want to secure with SSL/TLS. I have implemented a large part of the API which I have tested over HTTP, however, I am now at the stage where I want to switch it over to use HTTPS. At the moment the API is hosted on a Windows XP professional SP2 box running IIS 5.1 (development environment only) and I used the SelfSSL.exe tool from the IIS 6.0 Resource Kit Tools to generate a server certificate. I then configured my API to use this certificate which all appeared to work fine as I attempted to connect to my API using HTTP and I get a 403 response saying "... must be accessed over a secure channel...". However, the problem is when I attempt to access the same the API over HTTPS it just appears to hang! As this is a development environment at the moment I don't have a domain name (just a static IP address) and the API is running on port 81. Also (incase it matters) the API is the default site (I replaced it). Any ideas why I can't connect using HTTPS?

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• How do I setup JBoss 5.1.0.GA to run multiple instances?

  - by djangofan

  Does anyone have any experience or advice in setting up multiple JBoss 5.1.x instances on the same machine that has 1 network card? Here is what I did: Installed JBoss 5.1.0.GA into c:\myjboss 1.5. I copied the server/default directory to server/ports-01 and server/ports-02 so they have their own config. did I assume correctly? Ran .\run.bat -c ports-01 Ran .\run.bat -c ports-02 At this point there are 2 instances but the second instance doesn't load correctly because of what is probably a few port conflicts. For example: the http port ends up being 8080 for both instances, which it gets from line #49 in the C:\myjboss\server\all\conf\bindingservice.beans\META-INF\bindings-jboss-beans.xml file. Earlier in the server load it clearly gets the value from line#63 in that same file. I don't know why it gets part of the port config from line #49 and the other part from line#63. Confused. I also tried: .\run.bat -Djboss.service.binding.set=ports-01 -c ports-01 and it made little difference. Any ideas on what I am doing wrong?

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• Blocking HTTPS and P2P Traffic

  - by Genboy

  I have a Debian server running at the gateway level on a LAN. This runs squid for creating block lists of websites - for eg. blocking social networking on the LAN. Also uses iptables. I am able to do a lot of things with squid & iptables, but a few things seem difficult to achieve. 1) If I block facebook through their http url, people can still access https://www.facebook.com because squid doesn't go through https traffic by default. However, if the users set the gateway IP address as proxy on their web browser, then https is also blocked. So I can do one thing - using iptables drop all outgoing 443 traffic, so that people are forced to set proxy on their browser in order to browse any HTTPS traffic. However, is there a better solution for this. 2) As the number of blocked urls increase in squid, I am planning to integrate squidguard. However, the good squidguard lists are not free for commercial use. Anyone knows of a good squidguard list which is free. 3) Block yahoo messenger, gtalk etc. There are so many ports on which these Instant Messenger softwares work. You need to drop lots of outgoing ports in iptables. However, new ports get added, so you have to keep adding them. And even if your list of ports is current, people can still use the web version of gtalk etc. 4) Blocking P2P. Haven't been able to figure out how to do this till now.

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• Failure to obtain IP with ARP over Wi-Fi with personal Wi-Fi router in client mode

  - by axk

  I'm trying to connect a Samsung TV to the Internet using a TL-MR3020 personal wireless router in client mode. The TV fails to connect to the network. It sees the ethernet cable connected though. Here's my network topology: Here's what I've captured with Wireshark filtering for ARP (eth.type == 0x0806): It appears the TV fails to get the IP of the gateway (DSL modem/router) for some reason. One thing I've noticed is that the source MAC for the ARP requests coming from the TV is the MAC of the Portable wireless router (that is cd:89:00), not the TV itself and the modem sends the responses to that MAC (I'm not an expert and don't know if its okay or it may make the TV fail to get the requested IP). Also I'm able to ping the TV from the DSL router (through the telnet interface) and the router has an entry in its MAC table for the TV's IP with the Portable wireless router's MAC (that is cd:89:00). If I'm able to ping the TV I suppose it should know the router's MAC to respond to the ping, but then why these continuous ARP requests... I've also tried to connect my desktop trough this Portable wireless router the same way I'm trying to connect the TV and it works fine, I can set the DSL Modem's IP as the default gateway on the desktop's NIC and connect to the Internet. The TV can connect to the Internet when connected to the DSL Router with a wired connection. Any suggestions on what may be the cause of the problem / how to further debug it are welcome. Thanks!

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