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• Reviewing firewall rules

  - by chmeee

  I need to review firewall rules of a CheckPoint firewall for a customer (with 200+ rules). I have used FWDoc in the past to extract the rules and convert them to other formats but there was some errors with exclusions. I then analyze them manually to produce an improved version of the rules (usually in OOo Calc) with comments. I know there are several visualization techniques but they all go down to analyzing the traffic and I want static analysis. So I was wondering, what process do you follow to analyze firewall rules? What tools do you use (not only for Checkpoint)?

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• Apple iOS Apps and caching at the edge proxy

  - by Matthew Iselin

  Our network contains a growing number of iOS devices, all of which with very similar configurations. All Internet access is via a transparent proxy. We've found that iOS updates and some free apps cache fine on the proxy, but any paid apps fail to cache properly (as they seem to be encrypted to the Apple ID (?)). I'm just wondering if there's any way forward with this where we could cache the paid apps so that they are purchased n times, but downloaded from the proxy cache instead of from the Internet each time. Bandwidth caps aside, the download direct from the Internet slows everything down for everyone, regardless of fairness queueing and related 'fixes'. I know this is quite unlikely, but I figured there's nothing to lose and everything to gain before I look into other solutions (eg, QoS).

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• How can I free files that are in use by quicklook?

  - by alex-auguste1

  I have a couple pictures I was looking through and deleting stuck in my trash (Mac OSX 10.6 latest) and finder tells me they are in use when I try to delete them. I looked around online and found the lsof command in terminal (type lsod with a space, drag the file onto terminal, press enter) it told me the file was in use by: COMMAND PID FD Finder 7747 txt Finder 7747 13r mdworker 8685 txt quicklook 8822 13r quicklook 8822 14r any idea what I can do about this? (other than restarting, this happens to me quite a bit), I'm wondering if this could be a bug as well. Thanks for any help.

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• Direct DB to Web Server connection

  - by Joel Coel

  I have a database server sitting right underneath a virtual machine host server in the rack, and this vm host is primarily responsible for servers hosting a couple different web sites and app servers that all talk to databases on the other server. Right now both servers are connected to the same switch, and I'm pretty happy with the pathing. However, both servers also have an unused network port. I wondering about the potential benefits of using a short crossover or normal+auto mdix network cable to connect these two servers together directly. Is this a good idea, or would I be doing something that won't show much benefit and is just likely to trip up a future admin who's not looking for this? The biggest weakness I can see right now is that this would likely require a code change for each vm app to point to the new IP of the database server on this private little network, and if I have a problem with the virtual machine host and have to spin up it's guests elsewhere while I fix it I'll have to change this back before things will work.

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• Is there an application I can run that will tell me how fast my computer is running?

  - by Robert Hume

  At work I log into a virtual Windows machine. I'm told it runs as fast as a PC, but I'm skeptical. Is there an application I can run on the machine that will tell me how faster the machine is actually running? It would be nice if it ran on Windows and on Mac. Updating with more details -- I was asked "why does it matter" -- here's why: It matters because I'm a programmer and I need as much speed (CPU and memory) as possible to do my work. IMO, the virtual machine is noticeably slower than a basic $800 PC would be, but I need a way a proving it. Websites like Bandwidthtest.com can show me my internet speed, so I'm wondering if there's an app that can test my computer's speed.

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• URL redirect to a virtual server on a VLAN

  - by zeroFiG

  I have a production site, running off 10 servers. I've been given another virtual server on the same network as these 10 servers, to use for testing purposes. This server doesn't have it's own DNS entry. Therefore I need to do a redirect to the site hosted on this virtual server for a sub-domain of the site running on the 10 other servers. So Basically I was wondering how I would configure a sub domain of my production server to point at the Virtual server for testing. I'm guessing I need to modify my site file in /etc/apache2/sites-available and add another virtual host like the following and modify the redirect match: <VirtualHost *> ServerName SUBDOMAIN.DOMAIN.com RedirectMatch 301 (.*) **IP ADDRESS** CustomLog /var/log/apache2/SUBDOMAIN.DOMAIN.com.access.log combined </VirtualHost> Do I set the redirect match to just the IP on the Virtual server, and then configure another site file in the sites-available directory, which will recption this redirect and point the browser towards the HTML root? Thanks, I hope I made myself clear.

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• Can I optimize this mod_wsgi / apache file better?

  - by tomwolber

  Hi! I am new to Django/Python/ mod_wsgi, and I was wondering if I could optimize this file to reduce memory usage: ServerRoot "/home/<foo>/webapps/django_wsgi/apache2" LoadModule dir_module modules/mod_dir.so LoadModule env_module modules/mod_env.so LoadModule log_config_module modules/mod_log_config.so LoadModule mime_module modules/mod_mime.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule wsgi_module modules/mod_wsgi.so LogFormat "%{X-Forwarded-For}i %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined CustomLog /home/<foo>/logs/user/access_django_wsgi.log combined ErrorLog /home/<foo>/logs/user/error_django_wsgi.log KeepAlive Off Listen 12345 MaxSpareThreads 3 MinSpareThreads 1 MaxClients 5 MaxRequestsPerChild 300 ServerLimit 4 HostnameLookups Off SetEnvIf X-Forwarded-SSL on HTTPS=1 ThreadsPerChild 5 WSGIDaemonProcess django_wsgi processes=5 python-path=/home/<foo>/webapps/django_wsgi:/home/<foo>/webapps/django_wsgi/lib/python2.6 threads=1 WSGIPythonPath /home/<foo>/webapps/django_wsgi:/home/<foo>/webapps/django_wsgi/lib/python2.6 WSGIScriptAlias /auctions /home/<foo>/webapps/django_wsgi/auctions.wsgi WSGIScriptAlias /achievers /home/<foo>/webapps/django_wsgi/achievers.wsgi

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• TIME column in TOP command for mysql

  - by michael

  When I run top on my database server I get that mysqld has been running for 4:00.51 and it continues to go up. I assume this means that one process with mysql has been running this long from other posts on here. Its not set to cumulative mode as best I can tell as the heading looks like it would change to CTIME if that be the case. What I'm wondering is if this is normal for a site that makes a lot of individual connections using PHP. I shouldn't have any long running processes that would hold on to a mysql connection for this long, only seconds at most. Am I incorrect to assume that this time relates to one connection/process running? I think usually I see it flash up and away on the TOP, not just stay there with this number increasing.

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• Is an Intranet music streaming server legal?

  - by Jon Smock

  We are a large organization with thousands of users, and we're peaking on our Internet usage. Many of those users are streaming music while they work. We're wondering if providing a music streaming server internally would help on bandwidth. How legal is that? Here are two scenarios: 1) We purchase a body of music legally and stream it internally (I assume this is illegal) 2) We pull music feeds from free, legal, online sources and "rebroadcast" internally (I assume this is legal) We want to save bandwidth and help our users, but we want to do it in an ethical and legal way.

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• Running Java 32bit and 64bit on same computer

  - by Joris Meys

  I ran into a rather puzzling problem, trying to install Vuze 4.2.0.2 on my Windows 7. I have a Java 6 JDK 64bit, but Vuze complains that it can't find a correct 32bit JRE. Yet, as far as I know it shouldn't matter which Java is installed on the computer. (See also these answers). Now I was wondering : if it makes sense running a 32bit and a 64bit Java on the same machine, Whether that is possible, and if so what I should pay attention to in order to make sure that the correct Java is found. Thank you in advance PS : I have my reasons no to use the latest Vuze, so please don't tell me to update Vuze. I know.

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• How can I sync Nokia smartphones' calendars with Snow Leopard Server's iCal Server?

  - by Joe Carroll

  I've just installed and configured a Mac Mini Server for a customer who wanted to stop using Google Apps for their email. The plan was to also use the new server's calendaring service but we've hit a small snag: the staff all use iCal on Macs and Nokia E71s and there doesn't seem to be a way to use a single calendar for each person that syncs with both. iSync/iCal doesn't appear to allow their manually-synced phones to sync with the CalDAV calendars on the server, only with local calendars on their Macs. Nor does Nokia's organiser software support CalDAV but rather SyncML for live networked syncing. I was wondering if there's a plugin for iCal Server that would provide a bridge to a SyncML service I could run on the server... or anything else that would work (preferably FOSS)!

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• RSync to WebDAV mounted volume very slow

  - by AlexC

  I have a mounted WebDAV store, which I am playing around with to try and put together my own pseudo-DropBox set up. However, it seems very slow to upload larger files (my bandwidth graph goes ok for a little bit, then just stops dead for long periods of time). Has anyone tried this? I'm wondering if the way it gets mounted makes rsync think it's a local drive or something and so may be chattier than it would be if it knew it was a mounted network drive? (I'm new to rsync so may be all wrong here!) I'm syncing using rsync -rv /source/directory/ /mounted/webdav/directory/ This is running using MacOS 10.6, and WebDAV is mounted using the native mounting mechanism.

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• Admin mode on Procurve Switches

  - by stefan.at.wpf

  Not being a network expert, I spent some time configuring my network, until I found my mistake: On my HP ProCurve Switch 1810G, I thought that "Admin mode" means whether the administrative interface can be accessed from this port. Well, it means whether the port is enabled or not. Extract from the help function: Admin Mode - Select to enable the port-control administration state. Click to enable and have the port participate in the network.(Default : Enabled ) Well, of course I didn't read the help, because I didn't doubt it's for the adminsitrative interface and suspected an error somewhere else. Anyway, I am wondering if that is a commonly used term for enabling/disabling ports or if HP just wanted to make my life harder? I can't understand why this option isn't just called "Enable port"!? Here's a screenshot of how it looks in the web interface (yeah, shame on me for using a web interface)

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• Which is the best way to deploy a JBoss application?

  - by andreash

  Hi there, we are currently developing a JBoss application. To deploy it, we have a total of four servers (three years old). I am wondering which might be the best to do? There could be a load balancer (even a load-balancer cluster, for failover) in front of two servers, each holding one JBoss and one PostgreSQl host inside XEN environments. Does this make sense? Are there other, better options? Thanks a lot for your advice!

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• connect two computers together via a rs232 serial port

  - by Richard

  Wondering if anyone knows of a solution to connect with telnet/ssh through a rs232 serial port Edit: I am looking for a way to connect to computers together via a serial port. I want to be able to view the file system of a computer through a serial port.. Is this possible? Edit: So I have successfully connected two computers together using r232 serial ports with a null modem. The instructions I have used are located here Now how do I get to the file system of the host computer?? Any ideas?

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• OpenDocument format plugin for Mac Office 2008?

  - by penyuan

  Is there a plugin or script that lets Microsoft Office 2008 for Mac OS X open and save files in the OpenDocument ODF (.odt, .ods, .odp, etc.) format? I am thinking something like what you can do in Office 2007. I realise I could use an external converter, such as OpenOffice.org, just wondering if there is a more direct way. If such a plugin does not exist, would it be possible to manually make such a plugin? Such as via AppleScript (or anything else)? Thank you.

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• Why TVs are costlier than Monitor for same screen size?

  - by Vikrant Chaudhary

  Just wondering, why LCD/LED-backlit TVs cost more (almost double) than LCD/LED-backlit monitors for same screen size. Because I guess that TVs and Monitors, both use almost same technologies and both nowadays support some common connectors (HDMI/D-Sub/DVI etc). And since a Monitor has much higher resolution than a TV for that size, and they are used more closely than TVs, Monitors probably require more engineering effort. So, Monitors are supposed to be costlier than TVs, right? Ex: A ViewSonic (or any) 22"/26" monitor supports Full-HD resolution at 1080p (WSXGA+-1680×1050, WUXGA-1920×1200), while all 22"/26" HDTVs support HD-ready 720p (WXGA-1366x768) only, which is also the resolution of my Notebook's 15.6" screen.

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• SQL 2000 and group names

  - by Nasa

  I have a SQL 2000 server which has databases, under user section of the database object, I have some NT 4.0 groups. These groups were migrated over to Active Directory some time ago using ADMT with SID history. The original source domain groups have since been deleted. The access shown is olddomain\groupname. I don't know why, if they were ntfs permissions they would update automatically to target\groupname. The users in the AD domain still have access to the database as they are a member of the migrated group (Target\groupname). I was wondering 1) Why does the old group (source\groupname) show up as it doesn't exist anymore. But access is still granted to the target group? 2) Is there any easy way to update the group name from source\groupname to target\groupname? Thanks for any help.

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• In *nix, how to determine which filesystem a particular file is on?

  - by smokris

  In a generic, modern unix environment (say, GNU/Linux, GNU/Solaris, or Mac OS X), is there a good way to determine which mountpoint and filesystem-type a particular absolute file path is on? I suppose I could execute the mount command and manually parse the output of that and string-compare it with my file path, but before I do that I'm wondering if there's a more elegant way. I'm developing a BASH script that makes use of extended attributes, and want to make it Do The Right Thing (to the small extent that it is possible) for a variety of filesystems and host environments.

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• virtual machines

  - by André Alçada Padez

  well, i hope this doesn't get categorized as a boating question, but it really is related to programming. I have windows XP, and i am going to have to have a VM running: Windows 7 Visual Studio 2008 Sql Server 2008 IIS 7 (8 in a little while) Wamp Photoshop CS5 etc... so i was wondering what should i use to be easier to install and configure, and best performance: Virtual Box or Microsoft's Virtual Machine? Thank you Well i tried Virtual Box, it's always crashing for some reason. I think i'm going to try Virtual PC, just to stick to an all Microsoft Solution.

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• How to avoid damage to ISO archives?

  - by TMRW

  So had a problem where a 16GB ISO was damaged(likely my own fault using standard windows copy dialog instead of proper copy tool like robocopy with verification turned on). It took several hours but i managed to restore the ISO(basicly i rebuilt the damaged parts and recompiled).Namely some .rar archives inside it were unreadable but the ISO itself was readable. So im wondering how can i further protect something like this from happening again?.Obviously proper copy tool but mayble something else?.Perhaps set as "read only" could help?.I generally don't move these files a lot and if i need to acces them then it's only for opening/extracting.

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• Forward Windows Events Logs to Rsyslog

  - by SamCulley

  Thanks for taking time to read this post. Basically I would like to forward Windows Events Logs from all my desktop clients to a linux box with rsyslog on. Rsyslog provide a Windows agent to do just that but its 40 euros per license and when you have x amount of machines that cost adds up. I was wondering if there is a FOSS alternative available I have tried searching the Google but haven't managed to find anything. Hopefully someone might already faced this same problem and are using an alternative that they could recommend. Again thanks for reading, Kind Regards Sam

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• Create 8.3 name for an existing directory

  - by Chris Karcher

  I have a machine that initially had 8.3 filename creation disabled. However, this was causing issues with some legacy software, so it was re-enabled. I'm wondering if it's possible to go back and "add" 8.3 filenames to certain existing directories. For example, say I have a directory named "C:\name with spaces" and I get the following output when I run "dir /x": C:\>dir /x Volume in drive C has no label. Volume Serial Number is 6873-65B8 Directory of C:\ 04/09/2010 01:57 PM <DIR> name with spaces ... I'd like to somehow add an 8.3 name for the directory without recreating it, and then get the following: C:\>dir /x Volume in drive C has no label. Volume Serial Number is 6873-65B8 Directory of C:\ 04/09/2010 01:57 PM <DIR> NAMEWI~1 name with spaces ... I tried the 'rename' command but it didn't do the trick.

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• Internal LTO tape drive becomes hot

  - by claasz

  We use an internal LTO3 tape drive (HP Ultrium 920) in a PC (no particular server hardware) running Linux. The tape drive becomes quite hot - I don't have the exact temperature, but you may touch it for a second or two, then it hurts ;-) This happens when the tape has nothing to do (during reading/writing, it might become even hotter, I haven't checked that). Besides that, the system is working fine. Now I'm wondering Why does the tape becomes so hot? Is this something I need to care about? Is there something like a 'standby' mode for the tape? (I think it should not consume that much energy when it is not used)

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• Solaris to Linux conversion: Use VxFS or GFS?

  - by w00t

  We're a Solaris shop looking at RedHat Enterprise Linux and one of the things we're wondering is if we should keep Veritas Volume Manager + FileSystem or go with LVM+ext3 or RedHat's preferred cluster filesystem solution, GFS. One of the things we like about Veritas is that it can use Veritas Volume Replicator to have a remote copy of important filesystems. This functionality seems to be missing from RedHat, DRBD doesn't seem to be packaged in RHEL... So my questions are: Does anybody use VxFS/VxVM/VVR on Linux? Thoughts, experiences? Comparison with LVM+ext3? Anybody using GFS? Thoughts, experiences? Do you do remote replication for disaster recovery, and if so, how? Is there a standard RedHat way?

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