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  • Hard drives indication with controller MegaRAID SAS 9261-8i on HP Proliant DL320e Gen8. Is it possible?

    - by ame
    Give me advice, please. My situation: There're the server HP ProLiant DL320e Gen8 and MegaRAID SAS 9261-8i RAID Controller. I installed Controller into server and I reconnected Mini-SAS cord from block of hard drives to controller, but I haven't any indication of hard discs on server front panel. There's indication of activity of drives only during boot of server. Controller has 2-pin connector (JT6B3, SAS Activity LED header) but where and how can I connect it? Thanx.

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  • Blocking HTTP clients which request certain URLs repeatedly

    - by Guido Domenici
    I run a website on Windows Server 2008 R2. Looking through the IIS logs, I have noticed that there are some IP addresses repeatedly requesting certain URLs (such as for example /mysql/phpmyadmin/main.php, /phpadmin/main.php) which do not exist, as the site is entirely served off of ASP.NET. They are obviously fishing for known vulnerabilities. My question is, are there any firewall or other tools (Windows built-in or commercial) that allow me to block those IP addresses which request certain URLs multiple times?

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  • How to implement dynamic web blacklists in ISA Server 2006?

    - by Massimo
    I'm looking for a way to implement web site blacklisting in ISA server 2006. I know how to manually define a destination set and block access to it, and I also know how to import XML lists. What I'm looking for is some publicly available and actively updated blacklist (i.e. "porn sites", or "gamble sites") from some trustworthy source, and for a way to automatically get updated versions when they are released and use them in ISA. Can this be done, and how?

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  • Create .gitconfig for chrooted users

    - by Vincent LITUR
    I have several chrooted users on my server, and I want to install git for specific users. I block at the command : git config --global user.name "user_name" I use this command connected as the user, and I got this error : error: could not lock config file /home/username/.gitconfig: Permission denied I tried to create the file from root, and then put chmod 755 and chown username .gitconfig, but I get the error. Is there a way to do this ? Edit : This question http://stackoverflow.com/questions/17908386/unable-to-create-gitconfig-file-for-user answers mine

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  • UAE and the mysteries of unreachable websites

    - by 0plus1
    I write here because I'm really lost, please stay with me because it's not easy to explain. A company asked me to set-up a private server, now I'm a programmer so I got a solution with technical support and cpanel which helped me to setup everything and it's working smoothless. I'm by no means a professional sysadmin, but I have a fair knowledge of server configurations, but this problem is way over my knowledge, and apparently way over the knowledge of most sysadmins, I really hope that here I'll find someone with enough experience to help me or at least give me more insight. Now this company for which I'm consulting operates in the UAE (United Arab Emirates) and from there the server is almost unreachable. It started with ns not registering in the UAE, after a week that sorted itself out and now the site is indeed reachable, but it takes almost 2 minutes to load a webpage with one line of text. Emails go in timeout. The domain currently parked there has been bought appositely for tests, the main one that was supposed to go there, after a catastrophic week has been transferred to a shared hosting solution in the UK, and from there it works like a charme. Now after doing some research I discovered that I'm not alone in this, there are several reports of webmasters discovering that their website is not reachable inside the UAE, and mind this has nothing to do with the state-wide block of questionable sites, because in that case an error message appears, this seems to be related to the infrastructure of the UAE, which apparently reroutes everything through their own "fake" internet. Apparently new servers with their own IP are not recognized (yet?) by the UAE infrastructure, while shared hosting solutions seeing that they operates tons of other websites are more likely to be part of the UAE network. Now my questions are: 1) Has someone a real explanation for this? The only thing I can think of is that the server is on a new IP that is not yet recognized by the UAE, but that doesn't explain why it loads (even if after 2 minutes). I don't have any help from within the UAE as the only people that are "experts" are questionable companies that simply try to sell their own services. 2) If there is really some kind of block of new servers, is it possible to know before if a server is reachable from within the UAE, currently this is not a ns problem as even accessing the server with its IP result in a 2 minute wait. 3) Can it be that the problem lies somewhere else? There are some tests that I can perform? I'm not physically in the UAE, but I can ask the people there, or use teamviewer. Could it be some misconfiguration on the server (mind that the site works EVERYWHERE else in the world). Thank you for ANY kind of help

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  • Unecrypted Image of Truecrypt-Encrypted System Partition

    - by Dexter
    The general tenor around the internet seems to be that you can't create images of system partitions that have been encrypted (with truecrypt) other than with dd or similar sector-by-sector copy tools. These files however are very impractical given their size (and are obviously incompressible) which makes keeping multiple states/backups of your system partition rather expensive (..especially considering current hdd prices). The problem is that backup tools (like Acronis True Image, Clonezilla, etc.) won't give you the option to create an image of (mounted/opened) Truecrypt partitions, or that there is no recovery environment for restoring the backup, that would allow to run truecrypt before doing any actual restoring. After some trial and error however, I believe I have found a very simple way. Since Truecrypt (running in Linux) creates a virtual block device, that it uses for mounting the unencrypted partitions into the file system, partclone can be used for creating/restoring images. What I did: boot up a linux live disk mount/open the drive/device/partition in truecrypt unmount the filesystem mount point again, like so: umount /media/truecryptX ("X" being the partition number assigend by truecrypt) use partclone (this is what clonezilla would do too, except that clonezilla only offers you to back up real drive partitions, not virtual block devices): partclone.ntfs -c -s /dev/mapper/truecryptX -o nameOfBackupFile for restoring steps 1-3 remain the same, and step 4 is partclone.ntfs -r -s nameOfBackupFile -o /dev/mapper/truecryptX A backup and test-restore of the system (with this method) seems to have worked fine (and the changed settings were reverted to the backup-state). The backup file is ~40 GB (and compressible down to <8GB with 7zip/LZMA2 on the "fast" setting). I can't quite believe that I'm the only one that wants to create images of encrypted drives, but doesn't want to waste 100GB on the backup of one single system state. So my question now is, given how simple this was, and that no one seems to mention anywhere that this is possible - did I miss something? or did I do something wrong? Is there any situation that I didn't think of where this method will fail? Obviously, the backup file needs to be stored in some other encrypted place in order to still remain confidential, since it is unencrypted. Also, in order to do a full "bare metal" restore, one would have to actually first (re-)install Windows, encrypt it, and only then restore the backup file. The funny thing however is that you won't need to backup any partition tables, etc. since the reinstall will effectively take care of that. Is there anything else? This is imho still a lot better than having sector-by-sector images..

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  • Send keystrokes simultaneously to both host and slave over internet?

    - by donodarazao
    I would like to watch movies with a friend who lives far away from me. For this, the playback should be synchronized on both our pc. However, we have some constraints: Due to our low bandwidth internet, any form of streaming solution wouldn't work. We do however both have the same copy of the movie on our harddisks. We use movies to learn languages and because of this, we very frequently pause and rewind. The typical "3...2...1...go!" solution over skype wouldn't work because it would soon get out of sync. I imagine an approach that sends keystrokes simultaneously to both our pc would work (for example, if I press space to pause the movie at my pc, space should also be send to his pc). Any ideas how this could be realized? I looked into Synergy and InputDirector, but both neither seem to be an option, because I don't want to see the desktop of my friend, I want to see my desktop Keystrokes should be sent simultaneously to both pc, not just to one pc We have both Windows 7x64, and we might use any media player (VLC, XBMC,...).

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  • squid cache disk configuration

    - by Gogonez
    just wondering how far drive configuration will affect squid cache performance. what kind of drive configuration that fast enough for squid ? is it true that block-level parity strip raid faster than byte-level one ? is mirrored drive config will decrease squid cache write process ? how much swap space that squid realy need to store cache (reverse mode) for 200mb web doc ? what kind of benchmark should i do to analyze squid disk performance ?

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  • unix script problem

    - by Darie Nicolae
    Hello everyone, I have a simple script which runs on a FreeBSD machine with the following code: #!/bin/sh `sed -i .bak '\:#start 172.0.0.3:,\:#end 172.0.0.3:d' /usr/local/etc/racoon/racoon.conf` echo $? It should delete a block of text between the two patterns. The problem is that if I run the sed command directly from shell it works, if i run the script the return code is 0. Why's that?

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  • hosts.allow and hosts.deny WHM Host Access Control - what if my IP changes?

    - by beingalex
    I want to use WHM/Cpanel's Host Access Control interface to change some settings in hosts.allow and hosts.deny. I want to block all access to our SSH exept from the IP we have from our office. Daemon Access List Action Comment sshd ALL EXCEPT x.x.x.x deny Deny access from all other IPs apart from ours But I am worried about what happens if our IP changes, which it does about twice a week. How would I get back in to edit the hosts.allow / hosts.deny files?

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  • iptables : how to correctly allow incoming and outgoing traffic for certain ports?

    - by Rubytastic
    Im trying to get incoming and outgoing traffic to be enabled on specific ports, because I block everything at the end of the iptables rules. INPUT and FORWARD reject. What would be the appropiate way to open certain ports for all traffic incoming and outgoing? From docs I found below but one has to really define both lines? iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT I try to open ports for xmpp service and some other deamons running on server. Rules: *filter # Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0 -A INPUT -i lo -j ACCEPT -A INPUT -d 127.0.0.0/8 -j REJECT # Accept all established inbound connections -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Allow all outbound traffic - you can modify this to only allow certain traffic -A OUTPUT -j ACCEPT # Allow HTTP # Prevent DDOS attacks (http://blog.bodhizazen.net/linux/prevent-dos-with-iptables/) # Disallow HTTPS -A INPUT -p tcp --dport 80 -m state --state NEW -m limit --limit 50/minute --limit-burst 200 -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -m limit --limit 50/second --limit-burst 50 -j ACCEPT -A INPUT -p tcp --dport 443 -j DROP # Allow SSH connections # The -dport number should be the same port number you set in sshd_config -A INPUT -p tcp -s <myip> --dport ssh -j ACCEPT -A INPUT -p tcp -s <myip> --dport 5984 -j ACCEPT -A INPUT -p tcp --dport ssh -j REJECT # Attempt to block portscans # Anyone who tried to portscan us is locked out for an entire day. -A INPUT -m recent --name portscan --rcheck --seconds 86400 -j DROP -A FORWARD -m recent --name portscan --rcheck --seconds 86400 -j DROP # Once the day has passed, remove them from the portscan list -A INPUT -m recent --name portscan --remove -A FORWARD -m recent --name portscan --remove # These rules add scanners to the portscan list, and log the attempt. -A INPUT -p tcp -m tcp --dport 139 -m recent --name portscan --set -j LOG --log-prefix "Portscan:" -A INPUT -p tcp -m tcp --dport 139 -m recent --name portscan --set -j DROP -A FORWARD -p tcp -m tcp --dport 139 -m recent --name portscan --set -j LOG --log-prefix "Portscan:" -A FORWARD -p tcp -m tcp --dport 139 -m recent --name portscan --set -j DROP # Stop smurf attacks -A INPUT -p icmp -m icmp --icmp-type address-mask-request -j DROP -A INPUT -p icmp -m icmp --icmp-type timestamp-request -j DROP -A INPUT -p icmp -m icmp -j DROP # Drop excessive RST packets to avoid smurf attacks -A INPUT -p tcp -m tcp --tcp-flags RST RST -m limit --limit 2/second --limit-burst 2 -j ACCEPT # Don't allow pings through -A INPUT -p icmp -m icmp --icmp-type 8 -j DROP # 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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  • htaccess allow if does not contain string

    - by Tom
    I'm trying to setup a .htaccess file which will allow users to bypass the password block if they come from a domain which does not start with preview. e.g. http://preview.example.com would trigger the password and http://example.com would not. Here's what I've got so far: SetEnvIfNoCase Host preview(.*\.)? preview_site AuthUserFile /Users/me/.htpasswd AuthGroupFile /dev/null AuthType Basic AuthName "Development Area" Require valid-user Order deny,allow Allow from 127 deny from env=preview_site Satisfy any Any ideas?

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  • Group Policy fault - Students force

    - by Richard 'Bean' Williams
    Work at a school and we've got a scenario. We block F8 on all computers so students cannot access Safe Mode to bypass Group Policy... But students are logging into their accounts using AD, and they are turning them off half way through. Then they are claiming that when they login next time, they have Local Administrator accounts. Is this right, but we have blocked F8 and Startup repair, so wondering how they actually did it. Cheers Richard

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  • Lubuntu LiveCD disabling auto-mount.

    - by PxE Booter
    In cooperation with my IT teacher we want to boot all PC's in IT class with Lubuntu. I've successfully set up PXE server, but there is one thing that worries us. Harddrives shouldn't be accessible from booted Lubuntu(normal user only). Would adding to fstab something like: /dev/sda1 /Idk/What auto noauto work? I'd like to add that I can uncompress squashfs livecd filesystem. If no, what other solution is there, to block auto-mounting /dev/sda drive?

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  • Bacula backup process always blocks the restore

    - by georgehu
    Every day we have a long running catalog backup process, and I found there is no way to restore a file during the backup. So, Bacula is designed to block the restore while back is running? I'm using a disk backup, I couldn't understand why I can't restore file from early written volumes as the back process is not supposed to writing on the same volume file.

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  • How can one associate a 3ware controller with the corresponding /dev/tw?? device?

    - by barbaz
    I have a few 3ware RAID controllers installed in a system. Is there any way to figure out the mapping between the following identifiers, each describing in a way the very same RAID controller? The tw_cli reported controller id (e.g. c0,c1,c2,...) The corresponding device nodes that allow smartctl access via the 3ware driver (e.g. /dev/twa0, /dev/twa1, /dev/twl0) The block device presented to the system representing a RAID unit (/dev/sda, /dev/sdb,...)

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  • How do I remotely enable the firewall on Server 2008 to exclude specific IP addresses?

    - by Guy
    Previously I was working with Server 2003 and managed to lock myself out of the server (I was accessing it remotely) by enabling the firewall. I want to remotely enable the firewall on Server 2008 without locking myself out of the server (access via RDP) and then selectively add IP addresses to the firewall to exclude. i.e. block specific IP addresses. Are there any step by step instructions on how to safely do this?

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  • Is there any way to set up a malware-blocking transparent proxy on an Airport Extreme?

    - by Chris R
    I'd like to add some kind of easily-administered transparent HTTP proxy to my home network. Ideally, it would allow me to, for example, redirect web requests to blacklisted servers into nothing, block certain kinds of content, et al. My home network at the moment consists of a mac mini media server that could -- if the load wasn't huge -- fill this role as well, an Airport Extreme, and a mac laptop that is my main machine. I'm reasonably technically savvy, so don't spare the complicated answers.

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  • Remote mouse pointer not visible in VNC

    - by aef
    I used VNC desktops as a kind of collaboration server, as shared planning and pair programming environment for a long time. Now my latest iteration uses a KVM guest running Fedora 17 "Beefy Miracle", the Cinnamon desktop environment and an X11VNC server. The X11VNC server is automatically started with the desktop environment using the following command: x11vnc -localhost -many -shared -display :0 -bg My problem is that depending on the VNC client, the mouse pointer of the remote system which is shown through VNC is not synchronized to my client. I really need this, so I can see what my partner is doing on the desktop. When using Vinagre 3.2.1 on Ubuntu Oneiric Ocelot (11.10) or Vinagre 2.3.0.3 on Debian Squeeze (6.0) and I don't have my local mouse pointer inside the VNC view, I cannot see the mouse pointer of my remote system, nor its movement. When using TightVNC on Windows 7, I can recognize a mouse pointer trace for very short amounts of time after moving the mouse, but it is not clearly visible. Using UltraVNC on Windows 7 the mouse pointer is clearly visible all the time. With Gnome 2 I never had any problems with remote pointer synchronization, using exactly the same clients. I suspect this could have something to do with Cinnamon's dependency on 3D acceleration. On the other hand, it doesn't change anything to start Cinnamon's fallback environment Cinnamon 2D. Update: Same effect when I use Gnome 3.

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