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  • Deactivate SYN flooding mechanism

    - by mlaug
    I am running a server that is running a service on port 59380. There are more than 1000 machines out there connecting to that service. Once I need to restart the service all those machines are connecting at the same time. That made some trouble as I have seen that log entry in kern.log TCP: Possible SYN flooding on port 59380. *Sending cookies*. Check SNMP counters. So I changed sysctl net.ipv4.tcp_syncookies to 0 because the endpoints to not handle tcp syn cookies correctly. Finally I restarted my network to get the changes in production Next time I had to restart the service, the following message was logged TCP: Possible SYN flooding on port 59380. *Dropping request*. Check SNMP counters. How can I prevent the system for doing such actions? All necessary counter measures are done by iptables...

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  • Using a CF card as an IDE HDD

    - by dartacus
    I have an old Sony laptop (Vaio TR1-MP) that I like. The HDD has died and since it's a hard-to-find 1.8" IDE hard drive I'm considering buying one of those little CF card adaptors and a 16gb CF card. The total cost of that is about £30 and replacement HDDs for this model are far pricier. Has anyone replaced their HDD with a CF card in this way, and, crucially, is the performance utterly horrible afterwards? ;-) I've seen a couple of threads which hint it's possible but the advice eventually given was just to buy a SSD, but I'm not even sure if its possible to get a 1.8" SSD with an IDE connector that'll fit my laptop. (I freely admit that the most sensible thing to do would be to bin it and just buy a cheap netbook which would be smaller, faster and lighter than the sony, but it does have a very nice widescreen display and dammit I just like it !) Thanks, G

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  • Multiple connections to the same Wireless Network in Windows 7

    - by Jamek
    Hello, my university just limited bandwidth to 512 kbps (that's 64 kB/s!) for each connection. I was thinking to make multiple connection to the same wireless network (called "internet"), is this possible under Windows 7? I know it's possible to connect to more than one WLAN through the "hostednetwork" concept in netsh: netsh wlan set hostednetwork mode=allow ssid=xxxxx netsh wlan start hostednetwork However this method doesn't seem to work, I don't know if it's due to the authentication method (through certificates while hostednetwork seems to support just a "passphrase") or because I'm already connected to that network with the same MAC. Can you think to some tool able to do this?

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  • ISA Server transforming urls

    - by JohnyD
    I'm not sure if this is possible or not or whether it should be done through ISA 2006, DNS or IIS. In our organization we have domain1.com and domain2.com. Domain2.com is old as the hills but we still need to support it. Is it possible to translate all requests from domain2.com to domain1.com. For example: Client requests: http://www.domain2.com/someprofile.asp?param=1 url is transformed into http://www.domain1.com/someprofile.asp?param=1 Firewall is ISA Server 2006 running on Windows Server 2003. DNS is Windows Server 2003. Webserver is IIS 6. Thank you

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  • Data loss with roaming profiles on login on two different computers

    - by Jurriaan Pijpers
    We have a Windows server 2003 system with Active Directory and all of our users have roaming profiles. One of the users let someone login with his username and password on a different computer (2) while he was working on his own computer (1). Now when this user logs in on his own computer (1), the profile that is loaded is one that dates back many months (i think from the last time he logged on to computer 2). My suspicion is that the profile that was cached on computer 2 from many months back when this user last logged on on this computer, on logoff, synced over the newer profile on the server. so that now when he logs in, he gets this old profile. Now my questions: Is it possible to retrieve te newer profile? Is it possible to keep this from happening in the future?

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  • How to map email addresses on subdomains

    - by Glen Little
    Is it possible to create email addresses like these: [email protected] [email protected] [email protected] and have them all handled by one mail server, as three different mail boxes? (Many examples I've seen talk about directing mail to [email protected] into the same mail box as [email protected] - but this is not what I'm looking for.) I haven't specified the server technology being used because I'm wondering if this is generally possible. If you know that server x can do this, please mention it in your answer! Is it correct that MX records can be set to direct email to all subdomains *.mydomain.com to one mail server? Is that still true if there are also web sites at those subdomains (using A records)? Thanks!

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  • How to nmot show any prompts when inserting a USB drive in Windows?

    - by jasondavis
    1) I just found a really interesting program that allows me to use a USB drive as a windows login key. It is called Rohos Logon Key. IF I remobve my USB drive/key from the PC then I can have the PC lock or hibernate or any other option, I have been looking for such a solution for many years but never knew one existed until this and it works much better then I imagined. I do have a couple minor issues though (im using Windows 7 pro). When I remove and then re-insert my USB key, windows prompts me with this dialog here... Generally when I get this I just click on "Continue without scanning" however I am looking for a solution to just make it not even show this at all, is it possible to disable it from showing? 2) I also get this dialog as well when I insert USB drives/key... Would it be possible to not show this as well or have it pick an option by default or anything really?

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  • Does my dd-wrt installation support firewall logging?

    - by SpikeX
    I would like to log firewall events. I know this is possible with dd-wrt, but a lot of the documentation I've read states that this isn't possible with a micro installation of dd-wrt (based on BusyBox). I have a Netgear WNDR3700v2 router, and it does have BusyBox installed on it, but I don't know if the dd-wrt build is a micro build or not. How can I find this out, or how can I find out if my router supports firewall logging or not? Currently, if I enable all firewall logging (setting everything to "Enabled" and/or "High" gives me back blank firewall logs - but syslogd is working because I can view other system log messages).

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  • Two keyboards - one qwerty one dvorak. Can windows use both simultaneously?

    - by Alain
    Similar to this question: Is it possible to use multi keyboards with multi keyboard layouts simultaneously? - I have two keyboards plugged in simultaneously. Both are querty keyboards, but I've rearranged the keys on one to be a dvorak layout. I'd like to find some way to configure windows (XP) such that while both keyboards are plugged in, typing on each results in it's respective layout. I'd prefer if there was someway to have the system automatically use the desired layout based on which USB keyboard it is receiving input from. If no such solution is possible, I would settle for a fast way of switching between US English and US English Dvorak languages so that in a pinch I can easily go from one to the other. Thanks.

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  • Excel 'Data Matrix'-Font

    - by ntor
    Is it possible in Excel to have a font that automatically generates a 'Data Matrix'-Code from a text string. (As it is possible for usual Barcodes) Would I perhaps have to use a Add-In, because the font isn't "linear" or "one-dimensional" as barcodes are? EDIT: I found a solution (using a pretty expensive software): I simply used "NiceLabel", which is capable of using XLS-Tables as databases. Then I generated the Codes (Could be Barcodes, QR-Codes, Data Matrix Codes) from the cells in Excel. This solution doesn't automatically generate a 2D-Code into an Excel-Cell but fits for my personal needs.

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  • Use HAProxy or Nginx to Load Balance between VPS

    - by xperator
    I want to load balance + failover backup multiple vps webservers hosted on different providers. I heard that for HAProxy you need multiple server under the same subnet, plus a shared (virtual) ip address between load balancers. But it's not possible in my case cause every VPS is on different node/network. Is there a way to use HAProxy in this kind of setup ? ( Please explain how briefly, I don't want to hear your "YES" answer ) What about NginX? Is it possible to achieve same result with Nginx ? (when servers are located on different nets) I know about Round Rubin DNS, but it doesn't provide a real failover solution, neither a load balance between servers.

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  • Wordpress 3 multi-site install

    - by mike
    Hello, Trying to figure out if this is possible... My company has a cms product that was written in Java and we decided to use Wordpress to run blogs for our clients. Obviously, Wordpress does not run on tomcat(at least not by default) so we installed Pound(http://www.apsis.ch/pound/) on our server and have setup any Apache and Tomcat on different ports. When "/blog/" is requested, the request is directed to Apache. This works fine but we would like to use Wordpress multi site so that we can manage all the blogs from a single interface. We would also like the url for every site to be "/blog/" example: http://www.site1.com/blog/ http://www.site2.com/blog/ I'm thinking it would have to be done with apache??? Is it even possible? Thanks!

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  • Is WinRT really as secure as it's made out to be?

    - by IDWMaster
    Prior to releasing Windows 8, Microsoft claimed that all WinRT apps are cleanly removed from your computer after uninstalling them, and that WinRT apps should not interfere with other running applications, because they are ran in a "sandboxed" environment. Microsoft has also claimed numerous times on Channel9 that Windows 8 apps are not ran in a VM. So my question is; are these claims accurate? If the application is not running inside of a VM, how is it possible to protect the system against malicious code at runtime, assuming the attacker was able to bypass the screening process of the Windows Store system? Microsoft allows "native code" in WinRT apps, so wouldn't it be possible (using hand-coded assembly or some odd pointer manipulation trick to call functions outside of the sandboxed environment and interfere with the rest of the system, if it's really "native code" and not some VM?

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  • Url for search withing Exchange Server OWA

    - by Martin Vobr
    I can easily create url for searching the Internet for specific term: http://www.bing.com/search?q=example Is is possible to create a similar url for searching my Exchange server mailbox using Outlook Web App? Something like: http://my.exchange.server.tld/owa/search.aspx?q=example EDIT Some of comments asked for target, so here is the clarification: There is a web-based backoffice system which includes customer's email addresses. I want to provide an easy way to show emails related to this customer in a support mailbox. Adding a link to an OWA search result page seemed a way to accomplish quickly. I can lookup emails either via EWS or IMAP. I wanted to reuse OWA for displaying them instead of reinventing the wheel. If creating a search link is not possible what would be best alternative approach? I'm thinking about getting message list via EWS/IMAP, showing them and (at least now) redirecting to OWA in order to display the message content.

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  • Multiple subnets behind SonicWall TZ 180

    - by Derek
    We have a SonicWall TZ180 that acts as a VPN endpoint. Right now it has one WAN IP address and a /24 assigned to the LAN interface. Our mail cluster administrator asked if it was possible to add a second private class C behind the VPN. This second subnet would be available to the other network and then we would use address objects and acls to limit access. Is this possible? I read up on PortShield but I don't know if that's what we would need to use because we're pushing all data out of one physical port into a Cisco switch that has VLANs already set up. Addendum: It appears that PortShields will do what I want with only one limitation; it requires a direct 1-1 relationship of portshield to physical port. This would then limit us to 4 PortShields on 1 TZ180. Is there a better solution than this?

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  • Receiving faxes on printer even while computer is shut down?

    - by Supporter13
    I normally send faxes with a very old fax machine and I was thinking it takes so much time for every fax to be scanned for all the numbers so I would like to send faxes with a printer. I already have an all-in-one printer, it can scan and print, but I have the document I want to fax on my computer already, so there is no need to scan. Now, the question is if I buy a fax capable printer, will it receive my faxes even when the computer is shut down or do I need to keep the computer on? What I really want is a way to send a lot of faxes to a lot of numbers as fast as possible (the document already in the computer through scan or sending) to be able to receive the fax in my computer (even while off) so I can print it with my printer If both are possible then what requirements do I need? Also, I could not find any info on the internet about receiving faxes on the computer.

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  • Combine OS partion with data partition on NAS4Free/FreeNAS

    - by Pak
    I recently built a NAS4Free (formerly FreeNAS) machine using a 256MB (yes, MB) USB drive for the OS. When I did the original install, I had the bright idea of making the OS partition just big enough for the OS and a then creating a second partition using the remainder of the drive to store stuff pertaining to the OS. I never really found a use for the data partition and I ended up running out of space on the OS partition, so now I'd like to combine the partitions into a single partition. Is this something that is possible to do while everything is up and running? If it comes down to it, I can take down the machine and do a fresh install of the OS using the entire space of the USB drive, but I'd like to use this as an opportunity to better familiarize myself with FreeBSD/UNIX type systems. If this is possible, will it interfere with the NAS4Free things? The data partition shows up in the web interface under the disks section. If I end up manually changing the partitions, I'd be concerned with NAS4Free getting confused by the missing partition.

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  • Windows Xp, Svchost.exe connecting to different ips with remote port 445

    - by Coll911
    Im using Windows Xp professional Sp2 Whenever i start my windows, svchost.exe starts connecting to all the possible ips on lan like from 192.168.1.2 to 192.168.1.200 The local port ranges from 1000-1099 and the remote port being 445. After its done with the local ips, it starts connecting to other random ips. I tried blocking connections to the port 445 using the local security polices but it didn't work Is there any possible way i could prevent svchost from connecting to these ips without involving any firewall installed ? since my pc slows down due to the load I'd be thankful for any advices

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  • Hiding a directory through the FAT table

    - by hennobal
    I've looked into the FAT file system, trying to find a way to make a directory hidden from view of the user. This has been done with malware previously, so it should be possible. The SpyEye trojan hid inside a directory C:\cleansweep.exe\ which was only reachable through the command line. I know deletion is possible by substituting the first character of the directory in the FAT table with 0xE5, but then it will not be accessible. Any ideas on how the scenario from SpyEye can be recreated? Any filesystem is interesting, but ideally FAT or NTFS.

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