Search Results

Search found 30252 results on 1211 pages for 'network programming'.

Page 636/1211 | < Previous Page | 632 633 634 635 636 637 638 639 640 641 642 643  | Next Page >

• What steps should I take to debug this non-starting hvm virtual machine?

  - by Ophidian

  I have a dom0 machine running CentOS 5.4 with all the latest updates using Xen as my hypervisor. I am using Xen in part because this machine was set up prior to KVM being included in RHEL, and in part because KVM's network bridging configuration is not nearly as simple as Xen's. The dom0 machine is headless and I do all of my VM management via virsh from the command line. I have two hvm domU's: A web server running CentOS 5.4 A mail server running Gentoo Both VM's are backed by LV's on the dom0 but do not use LVM in the domU. Both have virtually identical libvirt configurations (differing by expected things like name, UUID, NIC MAC, VNC port, etc). The web server domU (WSdomU hereafter) does not start since applying the most recent kernel update (kernel-xen-2.6.18-164.15.1.el5.x86_64 and kernel-2.6.18-164.15.1.el5.x86_64 for the dom0 and WSdomU respectively). By 'not start' I mean it appears to be running but it does not use an CPU cycles, does not bring up a graphical console, and does not respond on the network. The WSdomU is listed as no state rather than the normal running or blocked in xentop. The mail server domU starts fine and functions normally. Here are the steps I have taken so far that did not solve the problem: Reboot the dom0 to see if things come up on their own Check xen dmesg on dom0 Check xend logs (a cursory viewing did not show anything blatant; specific suggestions of things to look for would be appreciated) Attempted to connect to the WSdomU's graphical (VNC) console from the dom0 Shutdown the mail server domU and attempt to start the WSdomU Check the SELinux labels on backing LV's (they're the same) Set SELinux to permissive and attempt to start the WSdomU Use virsh edit to try tweaking the WSdomU config virsh undefine, reboot, virsh define the WSdomU config dd the WSdomU LV to an .img file, copy it to my Fedora desktop and run it under KVM (works fine) What steps should I take next to debug this? I will edit in any additional configuration's requested in the comments.

  Read the article

• Which upgrade path for disk IO bound postgres server?

  - by user41679

  Hi all, We currently have a Sun x4270 with 2xquad core Xeon Nehalmen 2.93ghz cores (16 threads), 72 gig of ram and 16 x 10k SAS disks split between the os raid 1, a partition for the Write Ahead Logs which is raid 10 and a partition for the database tables and indexes which is also raid 10, all xfs. I'm currently evaluating which path to go down in terms of upgrades. We'll be sharding the DB at some point soon, but for now I need to focus on hardware upgrades specifically. The machine is not CPU or memory bound at all at the moment, just IOWait is become an issue. The machine is mostly write access as we have a heavy caching layer. We're seeing about 300 write IOPS average on both the database partitions. We don't have any additional storage infrastructure like a Fiber Channel or ISCSI network. Budget isn't too much of a concern, something inline with the size of this server (i.e no $1m IBM machines) Space is ok on the DB side of things, we're running out obviously but there's also some reduction we can do. Additional space would be good though. My current thoughts are either: * ISCSI SAN, possible with 10Gbit network that has solid state acceleration. * FusionIO card / Sun F20 card (will the FusionIO card work in the Sun box? * DAS shelf (something like this http://www.broadberry.co.uk/das-direct-attached-storage-servers/cyberstore-224s-das) which a combination of 15k sas disks and some Intel X25-E drives for DB indexes etc) what would I need to put in the x4270 to add a DAS shelf? I think it's a SAS HBA card, do I have to use Sun's own card or will any PCI Express card work? Anything else??? what would you guys do from your experience? I appreciate it's a lot of questions, but I haven't expanded a DB machine for a number of years and the landscape has changed dramatically since then! Any advice or feedback would be very much appreciated. Let me know if there's anything else I can clarify. Thanks in advance!

  Read the article

• 2 servers on 2 networks in same office

  - by irot

  Hello Gents, My office doesn't have a "server guy" in employ, so I'm stuck with having to fix server issues for now. There are 2 servers in our office, both are file/web servers only accessible via LAN. They are currently on the same network, so no issue there. Problem is, we recently got a static IP to use, but it's with a different ISP, so now we have 2 routers in our office. I would like to open one of the servers to the public as a web/FTP server. But if I hook a server up to the new router, users will no longer be able to access the files shared on that server (because they're on different networks). How can I go about making one server accessible to the public using the static IP line, but still able to share the files on it to the users connected to the other network? The server I want to make public is running Windows Server 2008, the other server Windows Server 2003. And as far as I know, IP addresses are assigned by the router. I'm just a developer, don't know much about networking. Thank you in advance.

  Read the article

• Very slow connection to xserve via afp or smb

  - by Mhoffman13

  Help. File transfer and connection speed to our Xserve are painfully slow from newly purchased iMacs. The Xserve is only used as a file server, its running 10.4.11. The problem seems to be only happening on brand new iMacs running 10.6.3. When connected either over afp or smb copying files is many times slower than usual. Other machines on the network running either 10.4 or 10.5 have a normal connection speed. To try to rule out OS incompatibility I connected the new iMac running 10.6 to another computer running 10.4 over the network. The file transfer speed was fast as normal. So it seems the problems lies with the X serve (maybe). The afp logs either access or error don't show anything unusual. One thing that did look different was when the imac was connected to the Xserve the user had its id listed as its IP address. The other machines connected, had the id of broadcasthost. I also noticed that when connected from the new iMac I can only see one of the mirrors. When any other computer connects both mirrors are shown. Tried a restart of the Xserve but the problem persists. Thanks in advance for any advice

  Read the article

• Fedora 15: em1 recently dissapeared and hostapd no longer serves internet to wirelessly connected devices

  - by Daniel K

  I have a laptop running hostapd, phpd, and mysql. This laptop uses an Ethernet connection to connect to the internet and acts as a wireless access point for my workplace's wifi devices. After installing some software and reconnecting my Ethernet elsewhere, my "em1" device is no longer present and wirelessly connected devices can no longer reach the internet. The software I recently installed is: pptp, pptpd, and updated some fedora libraries. I have also recently moved my desk and laptop to another location and thus had to reconnect the Ethernet elsewhere. Wifi devices no longer have access to the internet. Wirelessly connected devices are able to successfully log into the laptop, showing full strength, correct SSID, and uses the proper password. However, when I tried to connect to a site like google, the request times out. The device "em1" also no longer appears on my machine. Running: # ifup em1 will give me the following output: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device em1 does not seem to be present, delaying initialization. And running: # dhclient em1 has the following output: Cannot find device "em1" When I run # dmesg|grep renamed, I get the following: renamed network interface eth0 to p4p1. I've tried to connect to the internet through p4p1 directly from the laptop and was successful. However, my wireless devices connected to my laptop are not able to connect to the internet. I have uninstalled pptp and pptpd using # yum erase ... but the problem still persists. To install pptp I used: # yum install pptp To install pptpd I did the following: # rpm -Uvh http://poptop.sourceforge.net/yum/stable/fc15/pptp-release-current.noarch.rpm # yum install pptpd To update my fedora libraries I used: # yum check-update # yum update EDIT: Running # route produces the following results: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.11.200.1 0.0.0.0 UG 0 0 0 p4p1 10.11.200.0 * 255.255.252.0 U 0 0 0 p4p1 172.16.100.0 * 255.255.255.0 U 0 0 0 wlan0

  Read the article

• Cannot Connect To VMWare Guest OS Using Either RDP or VNC

  - by Humanier

  I have a PC (Windows XP SP3) with VMWare Workstation 7 installed. The VMWare hosts Windows Server 2003 Enterprise Edition R2. RealVNC (4.1.3) is installed on both OS'es. Both of them use Hamachi2. Host OS (WinXP) also runs ZoneAlarm Firewall. Hamachi network is set as trusted. My goal is to allow RDP and VNC connections to be made to the guest OS (Windows Server 2003). Both options work absolutely fine if I connect from the host OS. However I have problems when other computers from our Hamachi network try to connect the guest OS (Win2K3). RDP connections. RDP window opens, shows black content and after 15-20 seconds displays following error: RealVCN connections. Users are able to connect but all they see is a black screen inside VNC window. At the same their input (keystrokes or mouse moves/clicks) are visible when looking at the console window of the Win2K3. I really appreciate any ideas on how to resolve the mentioned problems.

  Read the article

• Apache runs in console but not as a service?

  - by danspants

  I have an apache 2.2 server running Django. We have a network drive T: which we need constant access to within our Django app. When running Apache as a service, we cannot access this drive, as far as any django code is concerned the drive does not exist. If I add... <Directory "t:/"> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> to the httpd.conf file the service no longer runs, but I can start apache as a console and it works fine, Django can find the network drive and all is well. Why is there a difference between the console and the service? Should there be a difference? I have the service using my own log on so in theory it should have the same access as I do. I'm keen to keep it running as a service as it's far less obtrusive when I'm working on the server (unless there's a way to hide the console?). Any help would be most appreciated.

  Read the article

• VLAN Tagging Traffic on Cisco Switch

  - by David W

  I have a situation where I'm setting up multiple VLANS on a pfSense firewall on the same physical interface for a client. So in pfSense, I now have VLAN 100 (employees) and VLAN 200 (students - student computer lab). Downstream from pfSense, I have a Cisco SG200 switch, and coming off of the SG200 is the student lab (running on a Catalyst 2950. Yes, that's old, but it works, and this is a poor nonprofit we're talking about). What I'd like to do is tag everything on the network as VLAN 100, except for the student computer lab. Earlier today when I was on-site with the client, I went into to the old Catalyst 2950, and assigned all of its ports to access VLAN 200 (switchport mode access vlan 200) without setting up a trunk on the Catalyst or on the SG200. Looking back on it, I now understand why internet in the lab broke. I reverted the lab back to the default VLAN1 (we're still running on a different firewall - we haven't deployed pfSense -, and the traffic is still separated physically). So my question is, what do I need to do in order to properly deploy this scenario? I believe the correct answer is: Ensure VLANs 100 and 200 are setup in pfSense, and that DHCP is operating correctly (on separate subnets) Setup a trunkport VLAN that allows both 100 & 200 traffic, and plug that port directly into pfSense. Setup a VLAN 200 trunkport on the SG200 (It's not running iOS, but if it were, the command would be switchport trunk native vlan 200), which will then plug into the Catalyst 2950. Setup a VLAN 200 trunkport on the Catalyst 2950 (that is plugged into the SG200 VLAN200 port with the same command - switchport trunk native vlan 200) Setup the rest of the ports on the old Catalyst 2950 in the lab to be access ports on VLAN200. Is there anything that I'm missing, or do I need to tweak any of these steps, in order to properly segment the network traffic?

  Read the article

• Are there any multiple desktops software for Vista? (similar to what is included in GNOME and KDE)

  - by Macha

  In GNOME and KDE, (and from what I hear, OS X aswell), you have a feature called multiple desktops. It allows you to have multiple screens of apps running, without having the same number of monitors. Does such a program exist for Vista? I'd like around four desktops (one for IM, one for programming, one for browsing/email and one for other apps), and at home I usually have one monitor if using my laptop outside of home, or two if I'm using it at home.

  Read the article

• libvirt's dnsmasq does not respond to dns queries or provide dhcp

  - by Jeremy

  This is on Ubuntu 10.04 server, using KVM to run Ubuntu guests. This system has been working for a long time and I have not changed anything (other than applying security updates), but today I found dnsmasq no longer responds to requests. I cannot say how long this has been broken for me because I don't frequently use the NAT'd guests. So it could have started just after the last updates or some other event and I just now found it. I can connect to port 53 with telnet at 192.168.122.1. I've flushed ip-tables to be sure it wasn't firewall rules and that is not the problem. dnsmasq is running, virsh reports default network as stared. I can't find ANY information on troubleshooting libvirt dnsmasq except that it won't play well with other instances of dnsmasq, which is not the problem. I cannot even find where log entries might be for this service. Any ideas on where to look for more information? edit to add: I added another network and that one works fine. I guess I have a workaround but would still like to figure out how to troubleshoot this problem.

  Read the article

• Sending ASCII characters on Mac USB/RS232 cable

  - by Olivier

  Hello, I have a RS232C/USB cable to connect an electronic device to my iMac Intel (MacOSX SnowLeo 10.6.3). Is there a utility program that allows for sending ASCII characters on the USB port that the RS232C device will understand? If possible, I'd rather avoid programming. I'd prefer an Automator script or a simple program with a GUI. Thanks

  Read the article

• Why does my DD-WRT not accept SSH connections from my laptop?

  - by Vlad Seghete

  So, here is my system: I have a 2Wire AT&T modem/router which I use for wireless and a Buffalo router flashed with DD-WRT which is physically attached to the 2Wire and set in the DMZ. I set everything up on the DD-WRT to be able to connect to it using ssh and also so that it forwards ssh requests on a different port to one of the servers behind it. Now, when I am physically connected to the DD-WRT all this works great and as I would want it to. I ssh into the two different ports using the WAN IP of my network, and I get where I expect to land. If, however, I am connected using wi-fi to the 2Wire, the same commands do not work. I do not get an error, simply a timeout. I have trouble understanding this, since the DD-WRT is set in the DMZ and everything should pass to it. To further complicate the problem, I tried connecting to the same IP using my phone (wireless disabled, so really from the WAN) and surprise, it works! If I go back on the local network by enabling the wifi, the ssh connection times out. To make this even stranger, my WAN IP address always responds to pings (meaning in all the above situations). What could be going on here? I know what I should do, completely disable the 2wire as a router and use it strictly as a modem and them use all the routing capabilities of the dd-wrt. It's what I will probably end up doing anyway, but my question remains, because I really want to know what is happening here.

  Read the article

• Why does Internet Explorer sometimes fail to connect to anything until I restart it?

  - by cletus

  IE has an annoying problem on my PC (XP SP3). I start it and try to go to Google (for example) and it'll sit there saying "Connecting" but nothing will happen and it doesn't matter how many times I try, it won't connect to anything. I discovered that if I kill IE and restart it then it might start working (and then it'll work every time). It might takes 3-4 restarts (of IE, not the PC) to get a working IE. Now I wouldn't normally care about this since I use Chrome but a lot of things use IE by default like Windows Update and the online help in Office 2003 so I would like to fix it. Interestingly, my work laptop, which is running Windows 7 RC 64-bit, has exactly the same problem (completely different network and everything). I'm utterly convinced it's not a network or hardware problem but some software problem. Edit: More info. It's IE8; No add-ons; Automatically detect settings is not enabled. It is set to "Never dial a connection".

  Read the article

• Slow tracepath on local LAN

  - by Simone Falcini

  I am on EXSi and I have 2 instances: Ubuntu and CentOS. These are the network configurations Ubuntu eth0 Link encap:Ethernet HWaddr 00:50:56:00:1f:68 inet addr:212.83.153.71 Bcast:212.83.153.71 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:76059 errors:0 dropped:26 overruns:0 frame:0 TX packets:7224 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6482760 (6.4 MB) TX bytes:2080684 (2.0 MB) eth1 Link encap:Ethernet HWaddr 00:0c:29:46:5a:f2 inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:252 errors:0 dropped:0 overruns:0 frame:0 TX packets:608 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:42460 (42.4 KB) TX bytes:82474 (82.4 KB) /etc/iptables.conf *nat :PREROUTING ACCEPT [142:12571] :INPUT ACCEPT [5:1076] :OUTPUT ACCEPT [8:496] :POSTROUTING ACCEPT [8:496] -A POSTROUTING -s 192.168.1.0/24 -o eth0 -j MASQUERADE COMMIT *filter :INPUT ACCEPT [2:72] :FORWARD ACCEPT [4:336] :OUTPUT ACCEPT [6:328] -A INPUT -i eth1 -p tcp -j ACCEPT -A INPUT -i eth1 -p udp -j ACCEPT -A INPUT -i eth0 -p tcp --dport ssh -j ACCEPT COMMIT CentOS eth0 Link encap:Ethernet HWaddr 00:0C:29:74:1C:55 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe74:1c55/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:499 errors:0 dropped:0 overruns:0 frame:0 TX packets:475 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:68326 (66.7 KiB) TX bytes:82641 (80.7 KiB) The main problem is that if i execute this command from the CentOS instance ssh 192.168.1.2 it takes more than 20s to connect. It seems like it's routing the connection to the wrong network. What could it be? Thanks!

  Read the article

• Portion of Screen Broke

  - by Devoted

  Hi, A portion of my laptop screen broke. Is there any kind of software that will just ignore that part and resize everything accordingly? It's like 1/6 of the screen on the right that makes anything over there impossible to see. If not, what would be the best programming language to go about making my own program? It is a PC but I can also run Ubuntu if that would be easier to make a program for.

  Read the article

• Netflix streaming stops loading at 98% on Revo 3700

  - by Martin Harris

  I'm trying to stream Netflix on an Acer Revo 3700 running Windows 7 Home Premium, but it hangs on the loading screen at 98% (after it has formatted the player to the right aspect ratio and added the controls, but before the video starts) with no error messages or failures. I have two other machines on the same network, one running Windows 7 Home Premium and another running XP, which both stream faultlessly. Things I have tried: Both a wired and wireless connection to the router Upgrading the video and audio drivers IE, Chrome and Firefox Boxee software Connecting with a VGA cable instead of HDMI (in case it is a HDCP thing) Uninstalling and reinstalling Silverlight. Getting someway into loading a HD movie and turning "Allow HD" off Does anyone know what Netflix is doing at the 98% load mark? Are there any log files? Anything else worth trying? Full disclosure: I'm using Netflix from the UK through a US based VPN. I've tried multiple VPNs and the problem is exactly the same, also the other machines on the same network through the same VPN work fine so I don't think this is the issue, but it might be a factor. The region check happens at around 7% and I get past that.

  Read the article

• Why is a SUBST'd drive inaccessible via shortcut or Run menu, but works fine from My Computer?

  - by Kev

  I have shortcuts to C:, D:, and E: in my quick launch bar. C and E work fine when I click on them, but D does nothing (that I can see) when I click on it. D and E are both SUBST'd drives pointing to folders that happen to be network shares. (I do this rather than mapping them so it doesn't have to go through the network layer--that way it works faster and I still get recycle bin functionality, etc.) If I go Start-Run and type D: or D:\, I get an error box saying This file does not have a program associated with it for performing this action. Create an association in the Folder Options control panel. If I go to My Computer and double-click the D drive, it comes up fine. Also, if I type \\servername\sharename pointing to the same place, it comes up fine. This just started happening this morning, out of the blue. It has been working fine ever since I set it up. Why might this be?

  Read the article

• Deleted printers keeps coming back - and multiply

  - by MojoDK

  My users are on 2012 R2 RDS Session Host servers. I've used "Deploy Printers" (from Print Manager) to deploy 4 printers. The last week, I've had a lot of problems where users can't print. If I deleted the printer and added it again, they could print just fine. Now I've removed all printer deploying from GPO - and I have no printers in any login scripts. I did a gpupdate /force, but all the 4 printers are now listed 3 times... If I delete the printers and log off and back on, all the printers are popping up again. Sigh! This is driving me nuts. This script doesn't show any of the "SVFREJA" printers... Set objWMIService = GetObject("winmgmts:\\.\root\cimv2") Set colPrinters = objWMIService.ExecQuery ("Select * From Win32_Printer") If colPrinters.Count <> 0 Then 'If there are some network printers Dim s s = "" For Each objPrinterInstalled In colPrinters ' For each network printer s = s + objPrinterInstalled.Name + chr(13) Next msgbox s End if It gives me this result... (sry for the big picture) My problem is not with the "redirected" printers, my problem is that I have several printers with the same name (on SVFREJA) and I can't get rid of them. Any idea why I can't get rid of the "ophaned" printers??

  Read the article

• CUPS printer on Vritual Machine can be access via CUPS admin, but not by XP?

  - by SJaguar13

  I have a Zebra label printer connected to a Linux Mint virtual machine. It was set up with CUPS and a Windows XP computer can then print to it via http://192.168.1.76:632/printers/labelprinter. That was all fine and dandy I then hooked up a Fargo Pro L PVC card printer to a Windows XP virtual machine. I had to disconnect the label printer as the server that hosted both virtual machines only has 1 parallel port. Now I plugged in the Zebra again, and it cannot print from the Windows XP computer anymore. If I go to the CUPS admin panel on the Windows XP computer, I can see it, everything looks fine, and I can send it a test page to print which works. If I try to print from Windows, I get an error that the printer is not found/cannot connect to the server. The only other thing that changed was the firewall on the router to allow remote desktop to another computer from outside the network, but all the firewall stuff was for external use. Nothing affected the IP address of the internal network. The Linux Mint VM also had a PDF pritner that was shared with CUPS. That printer is also down. I tried setting up a new CUPS installation on another VM, and when I go to share it with XP, I get the same error. I don't know what to try. It has access, it can get to the admin from that computer, it seems to be up and ready, but when Windows tries to connect, the printer isn't found even though 4 days ago everything was fine. Any ideas?

  Read the article

• Terminal Server in Windows Server 2003

  - by Hemal

  I have a confusion regarding what I am doing here. At present I have a Windows Server 2003 server with SP2. I have assigned RAS/VPN server role to it (through Manage my server wizard) and in my router, I setup the IP address of my RAS/VPN server as PPTP server. Staff leave their workstations ON all the time and access them from home through RDP. They first connect thorugh VPN & in the RDC they simply type their respective IP or computer name to access the office network from home. Everything works fine so far except: Staff have to leave compuers always ON in the office Speed is very slow depend how many staff members access the VPN network I was told to install and configure Terminal service to improve this situation. I already added TS Role in the server but I don't know how to clients can access the TS server from home or remote location. I really appreciate any good links or guidence from the experts in this group regarding this. Thank you in advance for any replies!

  Read the article

• How to sandbox a VMWare image as much as possible

  - by Craig H

  The situation: -A corporate environment, with a corporate managed XP desktop (locked down, patched regularly, restricted user rights, no manual install of SW, AV, etc.) The requirement: -Using VMWare Workstation, run a sandboxed image (also XP) for specific testing purposes (with admin rights in the guest VM). No network connectivity is required. It can't be a separate standalone physical workstation disconnected from the network. (FWIW, this is a legitimate, sanctioned requirement - not someone trying to get around corporate restrictions.) The challenge: -Do this in as safe/secure a manner as possible. The proposed solution: -Create an image with host-only networking. -Perhaps remove the virtual ethernet adapter? (not sure if it's required for basic VMWare functionality?) The question (finally): -What potential risks remain (and how could I best mitigate them)? One challenge is that the guest VM will not be a managed workstation itself, so patching, AV, etc. can't be guaranteed (and, ironically, would in fact be somewhat difficult given the proposed solution!)

  Read the article

• Intermittent 5.7.1 email bounce to Exchange 2007

  - by Steve Kennaird

  My knowledge of Exchange isn't particularly great, so excuse me if some of the terminology I use isn't quite right. I'm primarily a web developer who's now responsible for a small business's network. We have a server running SBS 2008 and Exchange 2007. Generally, everything works well, emails are able to be sent to both internal and external domains without issue. We've only got ~20 users, Exchange is sitting on a single server. I use SendGrid to send emails generated by our externally hosted website to users in the office. Primarily, order notifications are sent to [email protected]. Without any pattern and less than once per week on average, an email to [email protected] will bounce back, and the logs on SendGrid detail the following error: 550 5.7.1 Unable to relay for [email protected] Either side of that failed delivery attempt, I'm able to send and receive emails to/from [email protected]. Having done some research, incorrect reverse DNS seems like it could be a cause of intermittent bounces like this. Having used nslookup, I have found that the reverse DNS doesn't map like it should, e.g. Office IP: 135.325.351.123 (made up IP, for example only) Domain: office.somedomain.com (made up, for example only) Reverse DNS: somedomain.gotadsl.co.uk (half made up) Could this be a cause? I'm sure that the IP address and the domain should map to each other. Also, it has been suggested to me that as the Exchange server is on a network with an ADSL connection, that could be a potential cause as the connection "goes up and down all day long". I don't have an opinion on this, as I don't have enough knowledge of Exchange/ADSL to form a reliable opinion. Can anyone offer any insight as to whether one or both are actually potential causes, or if there is another possible cause?

  Read the article

• I get "An error occurred while Windows was synchronizing with [name of time server]." when trying t

  - by ChrisF

  Prompted by the answers to this question I decided to give the Windows built in time synchronisation another go. However, no matter what time server I use I get this error: "An error occurred while Windows was synchronizing with [name of time server]." The help suggests the following as reasons for failure: You are not connected to the Internet. Establish an Internet connection before you attempt to synchronize your clock. Your personal or network firewall prevents clock synchronization. Most corporate and organizational firewalls will block time synchronization, as do some personal firewalls. Home users should read the firewall documentation for information about unblocking network time protocol (NTP). You should be able to synchronize your clock if you switch to Windows Firewall. The Internet time server is too busy or is temporarily unavailable. If this is the case, try synchronizing your clock later, or update it manually by double-clicking the clock on the taskbar. You can also try using a different time server. The time shown on your computer is too different from the current time on the Internet time server. Internet time servers might not synchronize your clock if your computer's time is off by more than 15 hours. To synchronize the time properly, ensure that the date and time settings are set close to your current time in the Date and Time Properties in Control Panel. Now the first reason is clearly wrong - I am connected to the internet. I can see the 2nd being the most likely cause. I have Sygate Personal Firewall running, but it normally asks if something it trying to connect for the first time. Does anyone know I can unblock the NTP protocol - or at least check if it is blocked?. I don't think it's #3 or #4 as I've tried a number of different servers including the one currently used by Atomic Clock Sync. Though if someone knows the address of a UK time server I can double check this.

  Read the article

• Shortcut to "printer and faxes" on another computer

  - by Doltknuckle

  I have a print server running windows server 2008 that has about 50 printers on it. In windows XP, I was able to connect to the server using the UNC name and make a shortcut to the "printers and faxes" folder. (For the record, I know that it really isn't a folder, but that's outside the scope of this question.) I have recently switched to windows 7 and I find that the jump lists are really useful. One of the things I want to do is make it easy to connect to that server's "printers and faxes" folder. I would like to use something like a shortcut that I can open and go immediately to that location. The problem is that windows 7 doesn't have a way to create a shortcut like you could in WinXP. They have a button on the toolbar that says "view remote printers" which sends you to the correct folder. I'd like to avoid having to type out the server name. I also can't use the "view network" link in windows explorer. Our organization has over 6,000 machines and viewing the network lists all of them. This is all about saving time by using the minimum number of mouse clicks and key presses in normal operation. Does anyone have any suggestions?

  Read the article

• VPN on a ubuntu server limited to certain ips

  - by Hultner

  I got an server running Ubuntu Server 9.10 and I need access to it and other parts of my network sometimes when not at home. There's two places I need to access the VPN from. One of the places to an static IP and the other got an dynamic but with DynDNS setup so I can always get the current IP if I want to. Now when it comes to servers people call me kinda paranoid but security is always my number one priority and I never like to allow access to the server outside the network therefor I have two things I have to have on this VPN. One it shouldn't be accessiable from any other IP then these 2 and two it has to use a very secure key so it will be virtually impossible to bruteforce even from the said IP´s. I have no experience what so ever in setting up VPNs, I have used SSH tunneling but never an actuall VPN. So what would be the best, most stable, safest and performance effiecent way to set this up on a Ubuntu Server? Is it possible or should I just set up some kind of SSH Tunnel instead? Thanks on beforehand for answers.

  Read the article

< Previous Page | 632 633 634 635 636 637 638 639 640 641 642 643  | Next Page >