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  • windows server 2008 r2 remote desktop issue with roaming clients

    - by Patrick D'Haese
    I have the following situation : a Dell windows server 2008 R2 computer, with remote desktop services installed. I have installed a java application making use of a PostgreSql database, and made this application available for clients using RDP. Clients are standard Win XP pc's and Psion Neo handheld devices running Windows CE 5 Pro. The application works fine for clients on standard XP pc's connected directly via cat 5E Ethernet cable to a Dell Powerconnect 2816 switch. The Psion Neo clients connect wireless to the network via Motorola AP6532 access points. These access points are connected via a POE adapter to the same switch as the XP pc's. The Psion devices can connect without any problem and very quickly to the server and to the application using RDP. So far, so good. When the Psion devices move around in the warehouse, and they roam from one access point to the other, the RDP session on the client freezes for approx 1 minute, and then it automatically resumes the session. This freezing is very annoying for the users. Can anyone help in solving this issue? Update (August 9) : After re-installing the access points we have a working situation, but only when connecting to the RDP host : * via a Win Xp SP3 laptop * via a Symbol MC9190 Win CE 6 mobile device When roaming we notice a small hick-up less then 1 second, what is very acceptable. With the Psion NEO it's still not working, when roaming the screen freezes from 2 to 30 seconds. The RDP client on the win xp sp3 laptop and the symbol mc9190 is version 6.0. The RDP client on the neo is version 5.2. I have changed the security layer on the RDP host to RDP security layer (based on forums on the internet), because older RDP clients seem to have issues with the RDP 7.1 protocol on the Win server 2088 R2. Psion adviced us to do some network logging activity on the different devices. We made this logging via wireshark, and based on this the conclusion of Psion is that the server fails in handling tcp-requests. Can anyone give me a second opinion by analysing the wireshark loggings. Thanks in advance. Regards Patrick

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  • Changing the default TIFF viewer in IE

    - by Jacob Hume
    I have installed the AlternaTIFF viewer in IE (both 6 and 7, on separate computers), but based on the results of the test page, it is not being recognized as the default TIFF viewer inside Internet Explorer. It is installed and functioning, just not used by default. Is there any way to force IE to use AlternaTIFF as the default plugin to render TIFF files?

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  • Is it possible to integrate Computer Associates SiteMinder with SQLServer?

    - by Scott Weinstein
    We have a MS SQL BI stack which the standards group wants us to move to "WebSSO" which is based on Computer Associates SiteMinder/netegrity product. I figure integrating the web component won't be too hard, but we have users which connect to the Database directly - currently using Windows Authentication. Is is possible to itegrate Computer Associates SiteMinder with SQL Server? With SSAS? If so, how much effort is involved?

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  • How do I fix the Apache error "client denied by server configuration"?

    - by explorex
    I am using cPanel and Apache, and I am seeing the following error in my error_log: [Wed Feb 02 09:06:04 2011] [error] [client 110.34.4.242] client denied by server configuration: /home/websmart/public_html/.htaccess My project is based on PHP 5.3 using the zend framework. My .htaccess file contains: RewriteEngine On RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [NC,L] RewriteRule ^.*$ index.php [NC,L] Can anyone tell me what causes this error and how should I alter my .htaccess file to resolve this?

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  • Can a BIND server be a slave to a non-BIND master DNS server?

    - by Michael Neale
    If I have a master DNS that is not bind - can bind still slave to it? (ie does it use the DNS protocol or something else?). Kind of related - but do people still do this or do they use some other form of data replication to keep DNS records in sync to the slaves (ie file/database copying)? I would like to have the slaves refreshed as fast as possible so I am thinking normal slaving with is expiry/poll based might not be optimal?

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  • Can you get to a command line on the iPhone?

    - by Ethan
    I'm not even sure why I'd want to do this. I guess I'm just curious. Is there a way to get to some kind console, command line, or text-based UI on the iPhone? I'm referring to accessing the iPhone system itself, poking around in the directories, opening files in something akin to vi, that sort of thing.

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  • Barebones network appliance, 4+ GbE NICs, Intel chipset

    - by gravyface
    Looking for a stepped-up ALIX or Soekris embedded network appliance to load pfSense and/or handle other FOSS-based network roles. Main criteria is a GbE NICs (will be used for core routing/firewalling with managed GbE switches), DDR3 RAM capable, and multi-core/Intel Atom processor, in a 1U rack-mountable case or smaller. Axiomtek has the ideal product but I don't think they have retail channels.

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  • dd-wrt router firmware QoS troubleshooting

    - by Jeff Atwood
    I've been using the dd-wrt firmware on my router and I like it a lot! But -- I'm not sure the quality of service (QoS) is working on it. I have it set up as follows: http, port 80 -- Premium bittorrent, port 6969 -- Bulk https, port 443 -- Premium dns, port 53 -- Premium Per the QoS documentation, these levels are: bandwidth is allocated based on the following percentages of uplink and downlink values for each class: Exempt: 100mbps - ignores global limits. Premium: 75% - 100% Express: 15% - 100% Standard: 10% - 100% Bulk: 1.5% - 100% This doesn't entirely seem to work, though -- with busy torrents going I get major pauses in my web browsing which sucks! The QoS documentation gives some steps to check the QoS ... What you'll be interested to look at will be the first set of source and destination IP, including the port numbers. Next the presence of l7proto and the "mark" field. The entries indicate the current live connection QoS priority applied on them based on the "mark" field. The "mark" values correspond to the following Exempt: 100 Premium: 10 Express: 20 Standard: 30 Bulk: 40 (no QoS matched): 0 You may see "mark=0" for some l7proto service even though they are in configured in the list of QoS rules. This may mean that the layer 7 pattern matching system didn't match a new or changed header for that protocol. Custom service on port matches will usually take care of these. On port 6969 (bittorrent) I see a weird mixture of stuff with mark=0 and mark=40 like so cat /proc/net/ip_conntrack udp 17 105 src=98.162.182.42 dst=1.2.3.4 sport=64512 dport=6969 packets=3 bytes=290 src=10.0.0.2 dst=98.162.182.42 sport=6969 dport=64512 packets=4 bytes=202 [ASSURED] mark=0 secmark=0 use=1 tcp 6 117 TIME_WAIT src=98.248.173.174 dst=1.2.3.4 sport=51114 dport=6969 packets=12 bytes=704 src=10.0.0.2 dst=98.248.173.174 sport=6969 dport=51114 packets=10 bytes=440 [ASSURED] mark=40 secmark=0 use=1 tcp 6 598 ESTABLISHED src=165.132.128.201 dst=1.2.3.4 sport=57218 dport=6969 packets=8024 bytes=9919881 src=10.0.0.2 dst=165.132.128.201 sport=6969 dport=57218 packets=4211 bytes=239607 [ASSURED] mark=0 secmark=0 use=1 tcp 6 586 ESTABLISHED src=68.46.9.24 dst=1.2.3.4 sport=64688 dport=6969 packets=6 bytes=490 src=10.0.0.2 dst=68.46.9.24 sport=6969 dport=64688 packets=8 bytes=944 [ASSURED] mark=40 secmark=0 use=1 udp 17 45 src=222.254.228.38 dst=1.2.3.4 sport=25438 dport=6969 packets=5 bytes=454 src=10.0.0.2 dst=222.254.228.38 sport=6969 dport=25438 packets=3 bytes=154 [ASSURED] mark=0 secmark=0 use=1 ( full file visible at http://pastebin.com/AZE6EtWm ) I've been playing around with this log for a little while and I can't see any patterns! Why is some port 6969 bittorrent traffic tagged mark=0 (not matched) by dd-wrt's QoS while others are tagged mark=40 (Bulk) .. any ideas?

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  • SSH Tunneling From Mac to Windows Server 2008

    - by 5arx
    I've been using Bitvise Tunnelier for a good few years to get secure access to my home server. This week I've switched to OS X and can't seem to find a nice GUI-based app to allow me to connect SSH/SFTP/Remote Desktop thru an SSH tunnel. Can anyone please advise? I'm not overly keen on the command line... Thanks for reading :-D

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  • Why should I use Amazon Route 53 over my registrar's DNS servers?

    - by Abtin Forouzandeh
    I am building a site that I anticipate will have high usage. Currently, my registrar (GoDaddy) is handling DNS. However, Amazon's Route 53 looks interesting. They promise high speed and offer globally distributed DNS servers and a programmable interface. While GoDaddy doesn't offer a programmable interface, I assume their servers are geographically distributed as well. What are the main reasons I should opt to use Amazon Route 53 over free registrar-based DNS?

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  • How do I send raw ftp command?

    - by terrani
    Hi All, I have a situation that I have to use raw ftp commands such as cwd, retr, size, stor, type, and rest. I found out that most of GUI based FTP clients do not support command line commands. Is there a window ftp client that supports raw ftp commands?

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  • Where can I report an issue with IIS?

    - by Nathan Taylor
    While working with an ASP.NET application on Chrome for Android I discovered that Request.Browser.Cookies returns False for that browser (despite the browser supporting cookies). Based on what I've read, this indicates a problem with the database which ASP.NET (and, I assume, IIS) uses to look up information about different UserAgents. The fact that it returns False means that the database is either missing Chrome for Android, or has invalid data for it. What is the a proper place to report IIS issues like this?

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  • iptables management tools for large scale environment

    - by womble
    The environment I'm operating in is a large-scale web hosting operation (several hundred servers under management, almost-all-public addressing, etc -- so anything that talks about managing ADSL links is unlikely to work well), and we're looking for something that will be comfortable managing both the core ruleset (around 12,000 entries in iptables at current count) plus the host-based rulesets we manage for customers. Our core router ruleset changes a few times a day, and the host-based rulesets would change maybe 50 times a month (across all the servers, so maybe one change per five servers per month). We're currently using filtergen (which is balls in general, and super-balls at our scale of operation), and I've used shorewall in the past at other jobs (which would be preferable to filtergen, but I figure there's got to be something out there that's better than that). The "musts" we've come up with for any replacement system are: Must generate a ruleset fairly quickly (a filtergen run on our ruleset takes 15-20 minutes; this is just insane) -- this is related to the next point: Must generate an iptables-restore style file and load that in one hit, not call iptables for every rule insert Must not take down the firewall for an extended period while the ruleset reloads (again, this is a consequence of the above point) Must support IPv6 (we aren't deploying anything new that isn't IPv6 compatible) Must be DFSG-free Must use plain-text configuration files (as we run everything through revision control, and using standard Unix text-manipulation tools are our SOP) Must support both RedHat and Debian (packaged preferred, but at the very least mustn't be overtly hostile to either distro's standards) Must support the ability to run arbitrary iptables commands to support features that aren't part of the system's "native language" Anything that doesn't meet all these criteria will not be considered. The following are our "nice to haves": Should support config file "fragments" (that is, you can drop a pile of files in a directory and say to the firewall "include everything in this directory in the ruleset"; we use configuration management extensively and would like to use this feature to provide service-specific rules automatically) Should support raw tables Should allow you to specify particular ICMP in both incoming packets and REJECT rules Should gracefully support hostnames that resolve to more than one IP address (we've been caught by this one a few times with filtergen; it's a rather royal pain in the butt) The more optional/weird iptables features that the tool supports (either natively or via existing or easily-writable plugins) the better. We use strange features of iptables now and then, and the more of those that "just work", the better for everyone.

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  • Gmail push new mail notifications to Linux?

    - by David Wolever
    Is there any way to coax Gmail into pushing new-mail notifications into my Linux machine, without using a full-on graphical mail client like Thunderbird? edit: Thanks for all the responses, but (unless I'm mistaken) these applications all poll, none of them receive notifications pushed from GMail. Also, I'd prefer a console-based program, as this will be running on a headless server.

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  • How to approach taking a very diverse hybrid network and making something lean and cohesive

    - by Gregg Leventhal
    I am going to have an opportunity (from the role of Linux Sysadmin) to work on optimizing a corporate server network that has a lot of different application servers from LAMP stacks to JBOSS to IIS based ASP/.NET systems of all sorts. I am interested to hear how you would approach evaluating and consolidating a network in a situation like this where you are walking in cold? What are some of your go-to techniques?

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  • Microsoft Windows 64-bit application development best practises installation folder.

    - by abmv
    My problem is that a vendor is providing me with a 64bit application (packed in a 64bit installer) but it goes and installs to the x86 (Program Files) Folder and he keeps telling me its OK but I want it to install in the Program Files directory; as the 32 bit version does that and scripts for the app are developed based on this assumption. Can someone direct me to the Microsoft recommended best practices for 64bit applications(links). Thanks in advance.

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  • where to put core services in two-node cluster

    - by Veniamin
    I'm currently configuring two-node HA cluster based on CentOS with DRBD. Most services are packed in virtual machines with migration available. I have not made decision where to put some core services as: dhcp, ldap, dns - which are critical for all network infrastructure. There are two possibilities: Configure them as redundant HA services on cluster hosts. Pack them all into dedicated virtual machine. What is the best practice?

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  • Website not reachable via mobile device

    - by sanders
    I have this very strange problem with a website. The site works normal when coming from a webbrowser which is non-mobile. But when trying to reach the site via a mobile device (tried different browsers) it doesn't get to the website. The only error I see is: This website is not available and the message is: DNS_PROBE_POSSIBLE Does anyone know where I should look for the problem. The website is based on Joomla. The Url of the site is: http://bit.ly/1bOToII

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  • Diagnosing a Memcache server with a high cache miss rate

    - by Hobozilla
    Hi Guys, What tools are available to debug a memcache server with a high miss rate (62%)? Ideally I would like to know the keys for the top cache misses, but I would just settle for seeing the keys of live get requests and working it out from there. I have tried a few web based things (phpMemcache) but it doesn't have the information I need. I also tried statsproxy-1.0 which appeared to do what I need but would not play ball. Many thanks

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