I set a VNC on my server and but when I want to connect to my server with VNC i get this error :
" Failed to connect to server"
what am i going to do ?
thanks in advance
My intention is to perform a backup of my laptop's (Dell Vostro 3350) sda1 disk to my desktop. After some googling I decided to use CloneZilla for that purpose. I have an OpenSSH server installed and running on my desktop. So I inserted CloneZilla CD to CD-rom, booted from it, then chose an option smth like "use ssh server to store image". Then I got an invitation to choose a network interface. I chose wlan0 and entered shell to manualy configure connection. And that's where I got into trouble, for wifi-network which I wanted to use is WPA2-encrypted, and I don't know how to connect to it from command line.
Can somebody assist me. Appreciation for advance.
I've apache2 server installed on a machine that connected to two different networks, therefore it has two different addresses: 192.168.1.111 (static ip on ethernet network) and 109.253.78.211.
when connecting through 109.253.78.211 on the browser, the web pages are displayed perfectly, However, when connecting through 109.253.78.211 the web pages are displayed partially.
I've not installed any firewalls.
I'll really appreciate if you could redirect me to checks I should commit to reach the source of the problem.
Thank you :)
Hello
I just read this article which I find concerning:
"After 90 minutes of troubleshooting, Nash traced the problem to TeamViewer, which he used to remotely administer the client's servers. It turns out the program had opened up its own webserver on the client's machine as soon as Apache went down and in the process made it impossible for the client, a large provider of business software, to restart its proper website."
http://www.theregister.co.uk/2009/07/24/teamviewer_snafu/
I started using TeamViewer recently because it's just much better than UltraVNC (runs on both XP and Vista, the server dials out instead of requiring the user to open a port on their router + better performance than UVNC)... but I thought that TeamViewer had both the server and client connect out to TV's web server for data to flow between the two hosts.
Why does TV even need to open a web server on the server host?
Thank you.
I keep reading conflicting reports regarding Xencenters' management capabilities.
Is it true that you have to be on the same subnet to connect to Xenserver via XenCenter?
My boss is looking at getting an aircard ( internet over cell network ) for his laptop. One of the uses he mentioned was gotomypc. I couldn't find good information on it, but I was thinking it would blow out the bandwidth because it was like streaming a movie. Is gotomypc really feasible with an aircard at this point?
In many respects pathfinding algorythms like A star for finding the shortest route though graphs are similar to the pathfinding on the internet when routing trafic.
However the pathfinding routers perform seem to have remarkable properties. As I understand it:
It's very perfromant.
New nodes can be added at any time that use a free address from a finite (not tree like) address space.
It's real routing, like A*, theres never any doubling back for example.
IP addresses don't have to be geographicly nearby.
The network reacts quickly to changes to the networks shape, for example if a line is down.
Routers share information and it takes time for new IP's to be registered everywhere, but presumably every router dosn't have to store a list of all the addresses each of it's directions leads most directly to.
I can't find this information elsewhere however I don't know where to look or what search tearms to use. I'm looking for a basic, general, high level description to the algorithms workings, from the point of view of an individual router.
Background
Recently built my own PC. It works! Almost.
It's been a while since getting into the guts of these things, so I'm familiar but may be missing something simple.
FYI, I don't care about blowing the OS away -- it's brand new and we can go back from scratch as many times as necessary.
Goal / Issue
I'd like to use the SSD to take advantage of Intel's Smart Response technology (allows the SSD to act as a cache for HDDs)
I would like the SSD cache to act as a cache for my HDDs, which I would like to be in a RAID1 array (so I get the speed from the SSD and the redundancy from the RAID1)
However, Windows only sees the drive in device manager (not as a drive), so I'm unsure what to do about that.
Related: as far as I know, for this to work, the drives all have to be in a single RAID array (i.e. a RAID0 pairing of the SSD and the RAID1 HDD array).
However, when attempting this at the BIOS level, I am told there is not enough space for an array.
Steps so Far
Moved the SSD onto the Intel controller (I'd had it on the Marvel 6.0 controller instead of the Intel controller, so the BIOS was only seeing it in a strange way)
Updated the BIOS of the motherboard to the latest version
Reinstalled Intel's RST (iRST?) software several times, as some forums reported it working after reinstalling 3 times (which does not inspire confidence).
Checked Intel storage: it does see the SSD as a physical, non-RAID device. However, it says no space exists if I try to create an array.
Checked the BIOS: it does not show up in the boot order, but is an option that can be selected under boot options.
Tried the firmware update for that model. Issue: the firmware CD doesn't detect a drive; maybe the Intel storage controller is making it difficult?
moved the ssd to the marvel controller. The firmware update cd appeared to hang while searching for drives.
swapped out the SATA cable for the manufacturer's and moved back to the intel storage controller.
Noticed at this point that in the Intel RST software, a device DOES show up in addition to the RAID set -- only shown as a "60 GB internal disk". Windows doesn't appear to see it as a drive, but it does still show in device manager.
Move SSD to port from 0-3 on MOBO and set SATA mode to IDE (after disconnecting RAID1 config) to allow the firmware update to work. Firmware was already at the latest version.
Next Steps
?
Components involved
ASUS P8Z68-V PRO motherboard (Intel Z68 Chipset)
Intel i7 2600k Processor
2 x 1TB 7200 RPM HDDs
64 GB Crucial M4 SSD (M4-CT064M4SSD2)
For Reference -- Storage Configuration
Intel 3 gbps Intel 3gbps Intel 6gbps Marvel 6gbps
+----------+ +----------+ +----------+ +----------+
| | <----+ | | +-+ | | |
|----------| | |----------| |-|--------| |----------|
| | | | + | | | | | |
+----------+ | +--|-------+ +-|--------+ +----------+
| | |
+ v v
| 1 TB HDD 64 GB SSD
+
+> 1 TB HDD
For Reference -- Intel RST (v10.8.0.1003) Screenshot
Don't mind the "rebuilding" -- knocked a power cable out at one point; it's doing its job, not an indicator of a bad HDD.
Any thoughts? Thanks in advance for any help!
Hi There,
Does anybody know what is the best way to secure bash scripts. I have a script which creates database and source code backup and ftp it to other server. And login/password for destination ftp are plain text. I need somehow encrypt it or hide it in case of website hacking. Or should i create script written on C to create bash file then run it and delete ?
Thanks.
Thanks for the answers and I am sorry, i wasn't clear enough.
I would like to clarify my question in the following items.
We are storing the data in Rackspace Cloud files.
We can't pull as Cloud files doesn't allow you run a script.
We can write the script to run on Server A and pull FTP and MySQL data on servers B, C, D, etc. And we want to protect the passwords on A from the situation where A is hacked. Can we compile our script file to hide them?
Thanks
I have a Linux machine and a Windows machine behind a router that implements NAT (the diagram might be overkill, but was fun to make):
I am forwarding RDP port (3389) on the router to the Linux machine because I want to audit RDP connections. For the Linux machine to forward RDP traffic, I wrote these iptables rules:
iptables -t nat -A PREROUTING -p tcp --dport 3389 -j DNAT --to-destination win-box
iptables -A FORWARD -p tcp --dport 3389 -j ACCEPT
The port is listening on the Windows machine:
C:\Users\nimmy>netstat -a
Active Connections
Proto Local Address Foreign Address State
(..snip..)
TCP 0.0.0.0:3389 WIN-BOX:0 LISTENING
(..snip..)
And the port is forwarding on the Linux machine:
# tcpdump port 3389
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
01:33:11.451663 IP shieldsup.grc.com.56387 > linux-box.myapt.lan.ms-wbt-server: Flags [S], seq 94663035, win 8192, options [mss 1460], length 0
01:33:11.451846 IP shieldsup.grc.com.56387 > win-box.myapt.lan.ms-wbt-server: Flags [S], seq 94663035, win 8192, options [mss 1460], length 0
However, I am not getting any successful RDP connections from the outside. The port is not even responding:
C:\Users\outside-nimmy>telnet example.com 3389
Connecting To example.com...Could not open connection to the host, on port 3389: Connect failed
Any ideas?
Update
Per @Zhiqiang Ma, I looked at nf_conntrack proc file during a connection attempt and this is what I see (192.168.3.1 = linux-box, 192.168.3.5 = win-box):
# cat /proc/net/nf_conntrack | grep 3389
ipv4 2 tcp 6 118 SYN_SENT src=4.79.142.206 dst=192.168.3.1 sport=43142 dport=3389 packets=6 bytes=264 [UNREPLIED] src=192.168.3.5 dst=4.79.142.206 sport=3389 dport=43142 packets=0 bytes=0 mark=0 secmark=0 zone=0 use=2
2nd update
Got tcpdump on the router and it seems that win-box is sending an RST packet:
21:20:24.767792 IP shieldsup.grc.com.45349 > linux-box.myapt.lan.3389: S 19088743:19088743(0) win 8192 <mss 1460>
21:20:24.768038 IP shieldsup.grc.com.45349 > win-box.myapt.lan.3389: S 19088743:19088743(0) win 8192 <mss 1460>
21:20:24.770674 IP win-box.myapt.lan.3389 > shieldsup.grc.com.45349: R 721745706:721745706(0) ack 755785049 win 0
Why would Windows be doing this?
I am about to start buying parts every week for as long as it takes me to build the best PC I can build.
I am looking at the Intel i7-920 processor right now because it is about 250$ and it is a quad-core processor based on the x58 chipset I believe. From what I have read so far, intel is coming out with some 6-core processors soon that will also use the x58 chipset and will allow me to use the same motherboard and memory/ram to upgrade to a 6-core.
This sounds really good to me right now. I just read that the new 6-core processor. The Core i7-980X (extreme edition) was just released which is the first 6-core processor but it is supposed to be around $1,000 so I will probably just get the i7-920 for now and then upgrade to the 6-core version when the price goes down.
The motherboard I am looking at getting the GIGABYTE GA-X58A-UD5 which is around $280 at newegg.com
So that is my basic plan SO far. I have not purchased any parts yet.
I am just wanting to ask if this sounds like a good idea or if I should wait longer if I am wanting to eventually have a 6-core processor. Does anyone know if Intel is planning on releasing any other 6-core processor in addition to the Core i7-980X in the near future?
I just want to make sure I am buying the best setup for my money if I am going all out on it, thanks for any tips/advice.
I have the following configuration of servers:
1 central linux server, a VPS
8 satellite linux servers, "crappy shared hostings"
I have a bunch of files that I need to have in all servers. Right now i'm copying them everywhere manually, but I want to be able to copy them to the central server, and then have a scheduled process that runs every now and then and synchronizes them (only outwardly, no need to try to find "new" files in the satellite servers).
There are a couple of catches though:
I can't have any custom software in the satellite servers, or do strange command line things that'll auto connect to them and send the files directly. I know this is the way these kinds of things are normally done, but the satellite servers are crappy shared hosting ones where I have absolutely no control over anything. I need to send the files over FTP
I also need to have, in my central server, a list of the files that are available in each of the satellite servers, to make sure they are ready before I send traffic to them.
If I were to do this manually, the steps would be:
get the list of files in a satellite server
compare to my own, and send the files that are missing
get the list of files again, and store it in my central database.
I'd like to know what tools are out there that can alleviate as much of this as possible, first the syncing, and then the "getting the list of files available in the other server".
I'm going to be doing everything from PHP, not sure if there are good tools to "use FTP from PHP", which i'm pretty sure i'll have to do for step 3 at least.
Thanks in advance for any ideas!
Daniel
I'm working with IPv6 and have run into an issue configuring ip6tables on our main router in order to control what can come into the network. A default DROP rule in the FORWARD section has worked well (obviously leaving ESTABLISHED,RELATED as ACCEPT) to keep internal clients' open ports from being accessed.
However, running an ip6tables command for every little change is unwieldy. Whilst we are able to continue creating rules manually, I'm wondering if there's some sort of management interface we could use to create the rules quickly and easily. We're looking to be able to save time working on our firewall as well as providing a simple method for modifying rules for those who will eventually replace us.
I know webmin (heavily locked down on our network, naturally) has support for modifying iptables rules, but seemingly no support for ip6tables. Something similar would be fantastic.
Alternatively, suggestions for a firewall solution apart from iptables/ip6tables which can be managed remotely wouldn't be out of order. A web interface for management is certainly preferable, even if it is just a wrapper with shiny buttons over the raw config files.
I've looked on Asus's website, but they don't make it easy to understand what the differences are, and there's so many models to choose from! It's all spiel, and endless specs. How is anybody supposed to rifle through so much detail in order to make note of minor differences?
If anyone already has this knowledge, I'd love to know what the major differences between these Z77 models are:
P8Z77-V
P8Z77-V DELUXE
P8Z77-V LE
P8Z77-V LE PLUS
P8Z77-V LK
P8Z77-V LX
P8Z77-V PREMIUM
P8Z77-V PRO
P8Z77-V PRO/THUNDERBOLT
Asus are famous for offering lots of solutions, but if there's no easy way to see the differences, how can you even consider what to buy? Their website does include a Comparison tool, but it's broken:
I'm primarily interested in 1, 3, 4, 5 and 6, if that makes the task any easier.
I'm sure there are people who have this knowledge.
Thanks for any help.
I'm trying to buy a new pc, for software dev and a bit of gaming.
I already have a 500gb HDD , and a PCI sound card I want to use as well.
Is all this stuff compatible, and will it all work together and are there any significant bottlenecks?
Case, Mobo and PSU
"Primo Motion" AMD 880G DDR3 Ready Barebones (Socket AM3)
http://www.overclockers.co.uk/showproduct.php?prodid=FS-268-OK&groupid=43&catid=1817&subcat=
SSD 64GB
Crucial RealSSD C300 64GB 2.5" SATA 6Gb/s Solid State Hard Drive
http://www.overclockers.co.uk/showproduct.php?prodid=HD-007-CR&groupid=1657&catid=1660&subcat=1668
CPU
AMD Phenom II X6 Six Core 1090T Black Edition 3.20GHz (Socket AM3)
http://www.overclockers.co.uk/showproduct.php?prodid=CP-266-AM&groupid=701&catid=6&subcat=1944
RAM 8GB
Corsair Vengeance 8GB (2x4GB) DDR3
PC3-15000C9 1866MHz Dual Channel Kit
http://www.overclockers.co.uk/showproduct.php?prodid=MY-292-CS&groupid=701&catid=8&subcat=1387
Graphics
XFX ATI Radeon HD 5770 1024MB GDDR5
PCI-Express Graphics Card
http://www.overclockers.co.uk/showproduct.php?prodid=GX-149-XF
I am looking at building a new PC, it's mainly for office (graphics heavy) use and programming.
Looking for good performance with opening and closing programs and files as well as a fast boot.
I plan to have 3 primary hard drives
Windows 7
Programs (photoshop etc)
Current Files
(There'll also be a large storage capacity back up drive, but this will be the Seagate drive I already have.)
So, my question is, looking at standard "old fashioned" hard drives and SSD drives, obviously there's a massive price difference.
I have been looking at drives like this:
http://www.ebuyer.com/268693-corsair-120gb-force-3-ssd-cssd-f120gb3-bk-cssd-f120gb3-bk
and this:
http://www.ebuyer.com/321969-momentus-xt-750gb-sata-2-5in-7200rpm-hybrid-8gb-ssd-in-st750lx003
Having no experience of using either I don't know what's the most efficient thing to go for. Clearly the SSD will have better performance, but:
If, for example, I had an SSD for Windows (say about 100gB), that would clearly give me the boot speed I want, then I guess my real questions are:
If I were to buy one more SSD, would it give the greatest improvement on standard performance if used to store programs, or currently used files?
Given that the OS is on an SSD, should I not bother with the 3 drives and instead, partition that Hybrid drive to store programs and currently used files on it?
Obviously, option two is cheaper and option one could cause me storage issues, but that's when I can dump files I am not currently using onto another drive.
Any, I am open to suggestions... so what do you suggest?!
We provide an application as a service, over Windows RemoteApp. It's nearly impossible to deploy updates to the software, though, because if even a single user is online then the file is in-use and cannot be replaced.
Is there some way to make this possible or easier? If it were possible, I'd be deploying probably 2-3 updates per day. As it is, I sometimes have to go all week without deploying one.
Hey everyone,
Im trying to use RDP and save my credentials in a file so I dont have to entire it each time I connect.
I remember doing it before and it involved changing a group policy setting. What exactly do I need to change in Group Policy within Windows 7 in the host & client machines to accomplish this?
Thanks,
Hey everyone,
Im trying to use RDP and save my credentials in a file so I dont have to entire it each time I connect.
I remember doing it before and it involved changing a group policy setting. What exactly do I need to change in Group Policy within Windows 7 in the host & client machines to accomplish this?
Thanks,
I am trying to connect to my webserver via ssh but I can't. When I insert the password nothing happens . This is what I see:
# ssh [email protected][email protected]'s password:
Why ? In iptables there are no rules. Please help :(
I am trying to connect to my webserver via ssh but I can't. When I insert the password then the terminal is blocked. This is what I see:
# ssh [email protected][email protected]'s password:
Why ?
In iptables there are no rules.
Please help :(
The Noctua NH-U12-DX 1366 is an aftermarket CPU cooler for LGA1366 Xeon CPUs.
On Noctua's site they state:
Caution: The NH-U12DX 1366 can only be
used on mainboards that have a
backplate with screw threads for CPU
cooler installation (such as the Intel
reference backplate for Xeon 5500).
The cooler is thus incompatible with
Xeon 3500 and Core i7 mainboards that
don’t have such a backplate.
How do I know if the Asus P6T has this backplate?
I record lots of personal HD film footage and am looking for a cheap way to store all of this. I take ~120 GB of footage each month, so something expandable would be nice... something that might be able to hold 6+ SATA drives.
There is a low load requirement, as there is never more than a user or two... but it should be able to keep up with streaming 2 simultanious HD videos.
I don't really want to spend more than $200-$300 on top of the $900 I am thinking of spending for 6X2GB SATA drives@ $150 apiece, but I am willing to pay extra for a quality solution.
Should I get a cheap NAS server? a cheap multi-drive external enclosure? should I just get some used systems off craigslist? If it is an independent system I'll probably just throw ubuntu on it since I can maintain that well. Its easy to do a software raid from ubuntu too, if I choose to go that way.
Thanks
I wasn't sure if this belongs on SuperUser so flag if so.
I am looking to build, primarily, a windows development machine that is also good for recording using Cubase.
I know I should use seperate machines but I'm on a budget this time of year. I also havn't kept up with hardware for quite a few years.
Basically I know I want quad core, multiple monitor support (no gaming requirements). A lot of RAM, very quiet case and super fast HDD (SSD OR 10,000RPM)for compiling and latency.
I will store libraries and other data on a USB drive.
Sound card is not needed as I will be using an audio interface, all other music recording equipment is taken care of also.
I could do with some decent monitor recomendations also.
All suggestions welcome, thanks.
Of all the freeware backup programs i've checked out, the most frequent backup i could do automatically was every hour :(
Is there any freeware out there that can backup my data every minute or so? :) I'm talking about a few mega bytes of VERY important data... Preferably over the LAN backup too :)