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• Fortigate restrict traffic through one external IP

  - by Tom O'Connor

  I've got a fortigate 400A at a client's site. They've got a /26 from British Telecom, and we're using 4 of those IPs as a NAT Pool. Is there a way to say that traffic from 172.18.4.40-45 can only ever come out of (and hence go back into) x.x.x.140 as the external IP? We're having some problems with SIP which looks like it's coming out of one, and trying to go back into another. I tried enabling asymmetric routing, didn't work. I tried setting a VIP, but even when I did that, it didn't appear to do anything. Any ideas? I can probably post some firewall snippets if need be.. Tell me what you want to see. SIP ALG config system settings set sip-helper disable set sip-nat-trace disable set sip-tcp-port 5061 set sip-udp-port 5061 set multicast-forward enable end Interesting Sidenote VoIP phones, with no special configuration can register fine to proxy.sipgate.co.uk, which has an IP address of 217.10.79.16. Which is cool. Two phones are using a different provider, whose proxy IP address is 178.255.x.x. These phones can register for outbound, but inbound INVITEs never make it to the phone. Is it possible that the Fortigate is having trouble with 178.255.x.x as it's got a 255 in it? Or am I just imagining things?

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• dell latitude XT touch screen issue

  - by Jake

  yesterday I installed windows 7 ultimate after I had the enterprise version on this machine for a few months. the installation went smoothly and everything worked fine except for the finger detection of the screen(only the pen worked) and the bottom screen buttons for rotating and so. so I started to install all the missing drivers dell recommends for this model on their site, but once I tried to install N-Trig degitizer driver the installation said it was unsuccessful and since then the touch stopped working completely! I tried system restore but it didn't help so I went on and formatted the harddisk completely once again and installed windows but that didn't work either. I tried to install the N-Trig's driver but it was alarting for a fatal error and said that no device was detected. same story with N-Trig rollback. so I checked the device manager and saw an "unknown device" with VID and PID values set as 0000. I figured the N-Trig driver might have messed with the device firmware or something and now it doesnt know it's ID and munufactor... Is there anything that can be done? like forcing the N-Trig driver to install on this device or something? please help!

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• How is the extra mSATA SSD disk used/configured in a Dell XPS laptop?

  - by Mark

  Some machines in the new XPS laptop range from Dell come with a regular, large (500GB+) HDD and an additional 32GB m-SATA SSD. The only detail I can find about this extra drive on the Dell site is this: Store your important files, multimedia and photos with XPS 15’s large hard drive options. To get instant access to your media, choose an optional mSATA solid-state drive (SSD) that can boot up to twice as fast as a regular hard drive and resumes in less than 1 second. I'd like to know more about how this extra drive is set up and used, specifically: Is anything installed on it (e.g. OS files or a boot loader) or is it just used as swap space? Is the m-SATA drive visible as a lettered drive in Windows? (I'd guess not if it's used for swap file only.) Is this unusual configuration likely to cause any problems later down the line - e.g. when upgrading to Windows 8? As usual, Dell's sales team haven't been able to help. If anyone's actually got a Dell machine with this or a similar hard drive set-up and can give a definitive answer rather than speculation I'll accept the answer.

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• nginx giving of 404 when using set in an if-block

  - by ba

  I've just started using nginx and I'm now trying to make it play nice with the Wordpress plugin WP-SuperCache which adds static files of my blog posts. To serve the static file I need to make sure that some cookies aren't set, that it's not a POST-request and making sure the cached/static file exist. I found this guide and it seems like a good fit. But I've noticed that as soon as I try to set something inside an if my site starta giving 404s on an URL that isn't rewritten. The location block of the configuration: location /blog { index index.php; set $supercache_file ''; set $supercache_ok 1; if ($request_method = POST) { set $supercache_ok 0; } if ($http_cookie ~* "(comment_author_|wordpress|wp-postpass_)") { set $supercache_ok '0'; } if ($supercache_ok = '1') { set $supercache_file '$document_root/blog/wp-content/cache/supercache/$http_host/$1/index.html.gz'; } if (-f $supercache_file) { rewrite ^(.*)$ $supercache_file break; } try_files $uri $uri/ @wordpress; } The above doesn't work, and if I remove all the ifs above and add if ($http_host = 'mydomain.tld') { set $supercache_ok = 1; } and then I get the exact same message in the errors.log. Namely: 2010/05/12 19:53:39 [error] 15977#0: *84 "/home/ba/www/domain.tld/blog/2010/05/blogpost/index.php" is not found (2: No such file or directory), client: <ip>, server: domain.tld, request: "GET /blog/2010/05/blogpost/ HTTP/1.1", host: "domain.tld", referrer: "http://domain.tld/blog/" Remove the if and everything works as it should. I'm stymied, no idea at all where I should start searching. =/ ba@cell: ~> nginx -v nginx version: nginx/0.7.65

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• Internet connection problem,ping ok , but outlook and browsers dont work

  - by Ashian

  Hi, From some days ago I have a big problem on my laptop( run windows xp sp3) When I connect to internet I can ping web sites but when try to browse them some times it work correctly and some times the connection to server intrupted and I have to refresh the page several times. in this case browser show a connection problem immediatly after I click on address bar or a link on page( wihtout any try to connect to server) I use FireFox and opera and both of them have this problem. try another ISP and still I have this problem. I didnt use any proxy server and check the proxy setting. In this case Outlook also can't connect to mail server. this problem anfter some time or after restart windows have been fixed for a while. I check for virus and can't find anything. Is there any idea how can I fix it? UPDATE: Thanks for your responses. I test them , also I use Open DNS setting and that dosent help me. last night I see that my local web application ( such as Adsl modem config web site , and sites that I set up on windows xo IIS ) aslo can't open and Internal Communication error apears ( Opera Message) that didnt relate to DNS settings or Internet connection.

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• Apache Named Virtual Hosts and HTTPS

  - by Freddie Witherden

  I have an SSL certificate which is valid for multiple (sub-) domains. In Apache I have configured this as follows: In /etc/apache2/apache2.conf NameVirtualHost <my ip>:443 Then for one named virtual host I have <VirtualHost <my ip>:443> ServerName ... SSLEngine on SSLCertificateFile ... SSLCertificateKeyFile ... SSLCertificateChainFile ... SSLCACertificateFile ... </VirtualHost> Finally, for every other site I want to be accessible over HTTPS I just have a <VirtualHost <my ip>:443> ServerName ... </VirtualHost> The good news is that it works. However, when I start Apache I get warning messages [warn] Init: SSL server IP/port conflict: Domain A:443 (...) vs. Domain B:443 (...) [warn] Init: SSL server IP/port conflict: Domain C:443 (...) vs. Domain B:443 (...) [warn] Init: You should not use name-based virtual hosts in conjunction with SSL!! So, my question is: how should I be configuring this? Clearly from the warning messages I am doing something wrong (although it does work!), however, the above configuration was the only one I could get to work. It is somewhat annoying as the configuration files have an explicit dependence on my IP address.

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• DirectAdmin Centos4 server has virus

  - by Rogier21

  Hello all, I have a problem with a webserver that runs Centos4 with DirectAdmin. Since a few weeks some websites hosted on it are not redirecting on search engines properly, they are redirected to some malware site, resulting in a ban from google. Now I have used 3 virusscanners: ClamAV: Didn't find anything Bitdefender: Found a 2-3 files with JS infection, deleted them AVG: Finds lots of files, but doesn't have the option to clean! The virus that it finds is: JS/Redir JS/Dropper Still the strange thing is: website a (www.aa.com) does not have any infected files (have gone through all the files manually, is a custom PHP app, nothing special) but does still have the same virus. Website b (www.bb.com) does have the infected files as only one. I deleted all these files and suspended the account, but no luck, still the same error. I do get the log entries on the website from the searchengines so the DNS entries are not changed. But now I have gone through the httpd files but cannot find anything. Where can I start looking for this?

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• Gigabyte H55N-USB3: No video on HDMI

  - by newt

  I built a new PC with a Gigabyte H55N-USB3 / Intel Core i5 650. With a monitor plugged in the DVI port, everything works fine. I installed Windows 7 32-bit and enabled remote desktop connection. After that, I unplugged the monitor, plugged it into network and installed everything else (drivers, programs, etc) via RDP. However, when I try to use the HDMI port on my TV nothing appears. Neither during the boot, neither after Windows starts. The TV says there's "no signal" (if I remove the cable the message changes to "check cable"). The cable is new, and it is working fine with my home theater on same TV (by the way, it is the cable which came bundled with the home theater). Video driver is the latest from Intel site. Anyway, this shouldn't be the problem since there is no image during the boot. Any ideas or tips would be welcome. I'm googling around but found nothing useful, yet.

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• Synchronize Dreamweaver over an SSH tunnel using an SFTP connection

  - by Aeo

  Maybe... Just maybe... I'm asking too much here. Maybe I'm even barking up the wrong tree. I'm looking to essentially have Dreamweaver establish an SSH tunnel to one machine, and then use that connection to synchronize a site that is on another machine entirely. Now for some details: We've got two connections here at work. We've got our office connection for day to day business, and then we've got some fancy connection hosting our web servers upstairs. For the most part they've been mutually exclusive until recently. We had been establishing an SFTP connection to synchronize our web sites by going out over the office connection to the web and coming back in over the fancy connection to our servers upstairs. Recently -ish, we established a LAN connection to one of our servers that makes a pleasant change in VNC connection quality. Thanks to Vinagre, this makes it really easy to connect to any of our servers over this LAN connection via SSH tunnel for VNC. However, in spite of that new addition of a LAN connection, we still synchronize over the 'net. Out the office connection and in on the fancy one upstairs. I'm looking to change this. I'd like to get Dreamweaver to first tunnel over our LAN connection to the servers, and then go from there to whatever connection it needs to. Am I asking too much? The current set up: Dreamweaver is installed on Windows XP which is running within VirtualBox on top of Ubuntu 10.10. The network connection for VirtualBox is currently made in NAT mode, but could easily be switched to a Bridged Connection should it need be. The LAN connection is to 1 of 5 servers running CentOS 5.

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• How to have LiveJournal delegate my OpenID to something else?

  - by T-Boy

  I understand that if I have full control over my domain, I can set it up so that I can delegate the task of authenticating to another OpenID service provider. The problem is, what I'd like to do is to get the LiveJournal server to pass the authentication to someone else, instead of having LJ doing it. Preferably what I'd like to do is get LiveJournal, when asked by a web site, say, "No, I don't do it anymore -- go to this address". The plan was that this address would then be in a domain I fully control, which then would pass it on to whichever service provider I choose. I don't even know if I've gotten my understanding of OpenID right, if all this shenanigans are necessary, if my question makes sense, or if it's even possible with a service provider like Livejournal. ETA: Doing a little more reading up, and examining the source for my LiveJournal user page, I note that this particular line in the file's <header> area: <link rel="openid.server" href="http://www.livejournal.com/openid/server.bml" /> I suspect that changing this will allow me to forward OpenID requests to whomever I wish, I think; so far so good. Now comes the hard part -- figuring out how to change all of that using LiveJournal's customization options, if that is at all possible (here's hoping I don't need to pay to get that functionality).

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• Possible to have different SSLCACertificateFiles under different Location in Apache (client side ssl certs)

  - by Mikko Ohtamaa

  I am setting up Apache to do smartcard authentication. The smartcard login is based on client-side SSL certificates handled by an OS driver. I have currently just one smartcard provider, but in the future there are potentially several of them. I am not sure how Apache 2.2. handles client-side certifications per Location. I did some quick testing and it somehow seemed that only the last SSLCACertificateFile directive would have been effective and this doesn't sound right. Is it possible to have different SSLCACertificateFile per Location in Apache (2.2, 2.4) as described below or is SSL protocol somehow limiting that you cannot have more than one SSLCACertificateFile per IP? Example potential config below how I wish to handle several SSLCACertificateFile on the same server to allow users to log in with different smartcard provides. <VirtualHost 127.0.0.1:443> # Real men use mod_proxy DocumentRoot "/nowhere" ServerName local-apache ServerAdmin [email protected] SSLEngine on SSLOptions +StdEnvVars +ExportCertData # Server-side HTTPS configuration SSLCertificateFile /etc/apache2/certificate-test/server.crt SSLCertificateKeyFile /etc/apache2/certificate-test/server.key # Normal SSL site traffic does not require verify client SSLVerifyClient none SSLVerifyDepth 999 # Provider 1 <Location /@@smartcard-login> SSLVerifyClient require SSLCACertificateFile /etc/apache2/certificate-test/ca.crt # Apache does not natively pass forward headers # created by SSLOptions +StdEnvVars, # so we pass them forward to Python using RequestHeader # from mod_headers RequestHeader set X-Client-DN %{SSL_CLIENT_S_DN}e RequestHeader set X-Client-Verify %{SSL_CLIENT_VERIFY}e </Location> # Provider 2 <Location /@@smartcard-login-provider-2> # For real SSLVerifyClient require SSLCACertificateFile /etc/apache2/certificate-test/provider2.crt # Apache does not natively pass forward headers # created by SSLOptions +StdEnvVars, # so we pass them forward to Python using RequestHeader # from mod_headers RequestHeader set X-Client-DN %{SSL_CLIENT_S_DN}e RequestHeader set X-Client-Verify %{SSL_CLIENT_VERIFY}e </Location> # Connect to Plone ZEO client1 running on fg ProxyPass / http://localhost:8080/VirtualHostBase/https/local-apache:443/folder_sits/sitsngta/VirtualHostRoot/ ProxyPassReverse / http://localhost:8080/VirtualHostBase/https/local-apache:443/folder_sits/sitsngta/VirtualHostRoot/ </VirtualHost>

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• Changing SkyDrive default location on Windows 8.1

  - by jmblack

  Update: This issue is due to the use of any non-local location for the SkyDrive folder. I've currently worked around this by using a local folder, but this has not resolved the original problem. I am trying to change the location where SkyDrive is located in Windows 8.1. This is the newly integrated SkyDrive, and not a downloadable client. There are a couple of similar questions on this site, but they pertain to Windows 8 and 8.1 Preview: Changing the SkyDrive default path in Windows 8.1 (Windows 8.1 Preview) How do I change the SkyDrive default folder in Windows (Windows 8) The SkyDrive folder is a system folder in 8.1, and like other system folders, has a Location tab in its properties that theoretically lets you change its location. I was able to do this with other system folders such as Downloads and Pictures, but there is an error when I try to change this for SkyDrive. Edit: The location that causes this error is a mapped network drive. The error does not occur when trying to move SkyDrive to another location on the same drive. There are no permission restrictions on the mapped network drive. Edit #2: This is the method I followed that produced the error: A screenshot of the error can be found here Has anyone else encountered this or have any information on this?

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• Setting up apache vhost for Icinga

  - by DKNUCKLES

  It's been a while since I've worked with Apache so please be kind - I'm also aware of this question but it hasn't been much help to me. I'd like to set up a simple vHost w/ Apache for my Icinga instance. Icinga is up and running and I can access it from x.x.x.x/icinga, however would like to be able to access it externally as well as internally. I have set up the /etc/hosts file and the following is my barebones vhost statement in httpd.conf <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /usr/share/icinga ServerName icinga.domain.com ErrorLog logs/icinga.com-error_log CustomLog logs/dummy-host.example.com-access_log common </VirtualHost> I also have the following in my .htaccess file <Directory> Allow From All Satisfy Any </Directory> An entry has been made for the instance in the Windows DNS server on my network, however when I try to access the site by URL I am greeted with Internal Server Error. Reviewing the /var/log/icinga.com-error_log I see the following entry. [Thu Dec 13 16:04:39 2012] [alert] [client 10.0.0.1] /usr/share/icinga/.htaccess: <Directory not allowed here Can someone help me spot the error of my ways?

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• Should I use nginx exclusively, or have it as a proxy to Tomcat (performance related)?

  - by Kevin

  I've planned to create a website that'll be pretty heavy on dynamic content, and want to know what would be the wisest choice for part of my webstack. Right now I'm trying to decide whether I should develop upon nginx, using PHP to deliver the dynamic content, or use nginx as a proxy to Tomcat and use servlets to deliver the dynamic content. I have a good amount of experience with Java, JSP, and servlets, so that's a plus right off the bat. Also, since it is a compiled language, it will execute faster than PHP (it is implied here that Java is around 37x faster than PHP) , and will create the web pages faster. I have no experience with PHP, however i'm under the impression that it is easy to pick up. It's slower than Java, but since the client will only be communicating with nginx, I'm thinking that serving the dynamically created web pages to the client will be faster this way. Considering these things, i'd like to know: Are my assumptions correct? Where does the bottleneck occur: creating pages or serving them back to the client? Will proxying Tomcat with nginx give me any of nginx performance benefits if I'm going to be using Tomcat to generate the dynamic content (keeping in mind my site is going to be heavy in this aspect)? I don't mind learning PHP if, in the end, its going to give me the best performance. I just want to know what would be the best choice from that standpoint.

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• How can I make the Firefox Password Manager more intelligent?

  - by Philip

  I have two major gripes about the FF password manager: If I restore a session with multiple tabs with sites with saved passwords, the master password prompt pops up once for each of them, even if I correctly enter the password the first time. Sometimes I want Firefox not to use my saved passwords at all (e.g. because I want to let someone else use it without getting access to my accounts), but hitting cancel results in erratic behavior--sometimes the box just pops up again and again, or sometimes it stops and behaves as I wish (continuing to browse w/o my passwords) until it encounters another site that wants my password. Thus even when hitting cancel does leave me free to browse passwordless, it doesn't get Firefox to leave me alone for the whole session. Thus: do you know of any tweak or add-on that could (1) make Firefox smart enough to get my master password once and then leave me alone, and/or (2) add an option (checkbox-style, toggle button, etc.) to browse "for now" (until I toggle the option) or even "for this session" (until I restart) without using any of my saved passwords? I'm running Firefox 3.5.6 on Mac OS X 10.5; thanks.

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• Cisco 851 (IOS) router: FastEthernet 4 (WAN) got the shutdown flag.

  - by cjavapro

  At a customer location there was a Cisco 851 router (which uses IOS). The PCs on location were all of a sudden unable to connect. We came on site and found that FastEthernet 4 (the WAN port) was "administratively down". We ran these commands to resolve it config t interface fa4 no shutdown exit exit write Now the mystery is how the shutdown flag got there in the first place? The router was on battery backup... but during the outage it was power cycled by the customer. It is possible that there was a short outage by the ISP and that the power cycle caused the shutdown flag to come up. There may have been a hack or an attack pattern that caused the shutdown flag to come up. There may have been a hack or an attack pattern that the router to become unavailable and then caused the shutdown flag to be added on startup. Question: Does anybody have any clues? or at least remember that they had a shutdown flag come up on their WAN port also?

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• javascript doesn't seem to be able to post form data (nginx server w/ php-fpm)

  - by Jones

  So the situation is like so: I have a nginx server with php-fpm installed. All is well and the site scripts and all work perfectly. I am able to use html to POST form data and it works just fine. However, There seems to be be some correlation between javascript, the POST protocol and nothing happening. I cant seem to determine the issue. Example: I have a user login widget that uses javascript on submit the fields and POST the data to a backend auth script which returns a server message that then populates the login box saying something like "Login Successful" followed by reloading the page to properly enable content. Problem is, nothing happens when you hit submit. I do know the setup works because i had it working on apache before migrating. Also if it makes any difference, the server is a Amazon EC2 instance using the Amazon AMI. I really dont know where to start looking on this one, but below is my default.conf for the server: upstream backend_get { server 127.0.0.1:80 weight=1; } upstream backend_post { server 127.0.0.1:80 weight=1; } #Main website url server { listen 80; server_name server.com; #charset koi8-r; access_log logs/host.access.log main; error_log logs/host.error.log; location / { root /usr/share/nginx/html; index index.php index.html index.htm; if ($request_method = POST) { proxy_pass http://backend_post; break; } } location ~ \.php$ { #fastcgi_pass 127.0.0.1:9000; fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } }

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• Windows 2008 Server can't connect to FTP

  - by stivlo

  I have Windows 2008 Server R2, and I am trying to install FTP services. My problem is I can't connect from outside, FileZilla complains with: Error: Connection timed out Error: Could not connect to server Here is what I did. With the Server Manager, I've installed the Roles FTP Server, FTP Service and FTP Extensibility. In Internet Information Services version 7.5, I've chosen Add FTP Site, enabled Basic Authentication, Allow a user to connect Read and Write. In FTP Firewall support on the main server, just after start page, I've set Data Channel Port Range to 49100-49250 and set the external IP Address as the one I see from outside. If I click on FTP IPv4 Address and Domain Restrictions, and click on Edit Feature Settings, I see that access for unspecified clients is set to Allow, so I click OK without changing those defaults. In FTP SSL Policy, I've set to Require SSL connection, certificate is self signed. I tried to connect with FileZilla from the same host and it works, however it doesn't work remotely, as I said above. I've enabled pfirewall.log, but apparently nothing gets logged. The server is in Amazon EC2, and on the security group inbound firewall rules, I've set that ports 21 and ports 49100-49250 accepts connections from everywhere. What else should I be checking to solve the problem?

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• mod_rewrite adds .html when redirecting

  - by user12093810293812031

  I have a redirect situation where the site is part dynamic and part generated .html files. For example, mysite.com/homepage and mysite.com/products/42 are actually static html files Whereas other URLs are dynamically generated, like mysite.com/cart Both mysite.com and www.mysite.com are pointing to the same place. However I want to redirect all of the traffic from mysite.com to www.mysite.com. I'm so close but I'm running into an issue where Apache is adding .html to the end of my URLs for anything where a static .html file exists - which I don't want. I want to redirect this: http://mysite.com/products/42 To this: http://www.mysite.com/products/42 But Apache is making it this, instead (because 42.html is an actual html file): http://www.mysite.com/products/42.html I don't want that - I want it to redirect to www.mysite.com/products/42 Here's what I started with: RewriteCond %{HTTP_HOST} ^mysite\.com$ [NC] RewriteRule ^(.*)$ http://www.mysite.com/$1 [R=301,L] I tried making the parameters and the .html optional, but the .html is still getting added on the redirect: RewriteCond %{HTTP_HOST} ^mysite\.com$ [NC] RewriteRule ^(.*)?(\.html)?$ http://www.mysite.com/$1 [R=301,L] What am I doing wrong? Really appreciate it :)

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• IIS 7 much slower than IIS 6

  - by JoeJoe

  I have a asp.net 3.5 web application running fine on Windows2003 IIS6. I published same exact application to IIS7.5 (Win2008R2) on a faster box (i5,8Gram) and it is significantly slower. 5-6 sec per page vs. 1-2 sec per page. During that time the Task Mgr CPU is always under 10%. Both attach to same database on other box. Benchmark is consistent from any other client browser or machine. I have connection pool on both, compression on both. Same network subnet. Forms authentication (no SSL yet). Can you give me steps on how to troubleshoot where the delays are being inserted or settings in IIS7 that I may have overlooked. Just using defaults. There is only 1 web site on each box. I understand the roles of an Application as defined in IIS has changed. There is no special Application defined in IIS.

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• How to set an executable white list?

  - by izabera

  Under Linux, is it possible to set a white-list of executables for a certain group of users? I need them to be unable to use, for example, make, gcc and executables on removable disks. How can this be done? Edit, let me explain better. I'm dealing with a high school IT system, young geeks that (during the lessons) want to play, surf the net, damage those computer however they can. The major step to achieve this goal was to remove the system they're familiar with and install Ubuntu in all the computers. This actually works quite well, but recent events proved that this is not enough. I want to allow them to execute certain safe programs, like Open Office, and to deny any other program, whether it is preinstalled software, something they carry in usb drives, a downloaded program or a script they program on site. It's possible to remove the 'x' permission on any file on the pc, but of course it would be impractical. Furthermore, they would be able to run anything they download. I thought the best solution would be to make a white-list of safe programs and to deny anything else, but I don't really know how to do it. Any idea is helpful.

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• Diagnosing Random Network Lag

  - by uesp

  I'm having trouble diagnosing some random lag on a 6 server LAMP cluster serving a MediaWiki site. While we're serving some 100 pages/sec the servers themselves are running fine with less than 0.5 load, no locked processes, no paging, no errors being logged, etc.... Lag is present on all servers and is random: one minute its fine the next it's there. DNS lookups on the servers are randomly slow. For example time nslookup google.com varies randomly from a few milliseconds to several seconds and sometimes times out entirely. While we use IP addresses internally on the cluster this may be a symptom of the root issue. We are not running our own DNS server. The Apache server-status pages randomly lag or time out. Benchmarking using ab between servers shows a few loads sometimes take 3000 ms (almost exactly). Benchmarking server-status on the local server itself usually shows no issue (it showed a lag only once among a few hundred tests). The servers are sitting behind a switch and a firewall which I don't have any access to so I don't know their setup or status. While we are under heavier than normal load a 2 Mbps incoming and 20 Mbps outgoing traffic shouldn't be stressing the switch or firewall should it? My feeling is that it is the switch/firewall or something above them in the ISP like their DNS but can't confirm it. I need some other tests or methods of diagnosing this lag to try and narrow down the ultimate cause.

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• VPS Memory Exchausted Even With Light Settings

  - by user101570

  Linux noob here. I have a 256MB VPS on Ubuntu 11.04 server and when I run "free -m" the result shows all memory being used (including the second line re: buffers/cache). I found this very strange, considering I only have 5 Apache processes running each chewing up about 20MB each. MYSQL is taking up 30MB. To my knowledge, and according to "top", I have no other memory hogs operating. Settings that may be relevant: PHP memory_limit = 32M MYSQL key_buffer = 16M Prefork MPM Maxclients = 10 So when I reviewed these settings, I naturally thought maxclients was too high, so I tried switching it to 5. Now not only does my memory still show as being 100% used, my website loads much, much slower, despite not getting any traffic aside from mine at the moment. I don't understand this. I thought a single Apache process handles all requests from a client received within the "KeepAliveTimeout" window, which I've set to 2 seconds. With my initial config. of 10 maxclients, my page load times are around .3ms, so a single process should handle that no problem, correct? So next I went to an extreme level of 1 for maxclients. My memory is still at 100% usage and my site loads painfully slow. I'm a noob at a complete loss here. According to the many tutorials I've read on basic server setup, I should be good to go. Help! Please! Edit: total used free shared buffers cached Mem: 256 256 0 0 0 0 -/+ buffers/cache: 256 0 Swap: 0 0 0

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• ASP.Net Session Timing Out Rapidly

  - by Zac

  We have an ASP.Net 3.5 website running on Windows Server 2008 with IIS7. The session timeout period for this site is configured to be 20 minutes - however, it is currently lasting for between 40 and 50 seconds. After researching the problem we investigated several configuration values which could be involved in the timeout period but none of them are set to less than 20 minutes. The areas we look are as follows: web.config system.web/sessionState element (20 minutes). web.config system.web/authentication/forms element (not present, defaults to 30 minutes). Sites/{website}/ASP/Session Properties/Time-out (20 minutes). Application Pools/{appPool}/Advanced Settings/Process Model/Idle Time-out (20 minutes). We've also noted that the CPU is staying around 0% and that RAM usage is flat-lining around 1.07 GB (of 8 GB available) - so there is no performance-based reason for IIS to be recycling the Application Pool as far as we can tell. Are there any settings we've overlooked which could cause the session timeouts to be expiring so quickly? EDIT A couple of additional points: This is not occurring in development, only on the server. The session is not sliding (i.e. if we refresh the page a few times it still times out approximately 40 - 50 seconds after the session was created.

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• How can I read PDFs with e-reader on a Lenovo tablet?

  - by Jack M

  This is my first time using a tablet and I'm totally lost - this must be what computers look like to old people. This is a Lenovo Thinkpad tablet. I don't see a specific model number on it (it was passed down to me second hand). What I'd like to do is read a PDF. I'm fairly certain I successfully transferred the PDF onto the tablet via an SD card, and I noticed this thing has an app called "eReader" on it, so I started that up. All I see are empty bookshelves, and no obvious buttons or settings anywhere. I saw in multiple places that you have to, as one site puts it: ...copy and paste the relevant files into the eBooks folder and they will appear on the eReader shelf for your consumption... But I have no idea how to: Access the file system. Locate the eBooks folder. Copy and paste files. Will I need a file explorer app? If so, how can I install that given that my only method of getting data onto this tablet is an SD card (no wireless internet).

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