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• Virutal Machine loses network connectivity on Hyper V Cluster

  - by Chris W

  We're running a number of VMs on a 6 node failover cluster of blades using Hyper V. We have an intermittent issue (every few days at different times - not a fixed frequency) of VMs losing network connectivity. Console access to the VM suggests all is fine and the underlying blade has normal connectivity. To resolve the problem we either have to re-start the VM or, more usually, we do a live migration to another blade which fires up connectivity and we then migrate it back to the original blade. I've had 3 instances of this happen with a specific VM running on a particular blade however it has happened once with a different VM running on a different blade. All VMs and blades have the same basic setup and are running Windows 2008 R2. Any ideas where I should be looking to diagnose the possible causes of this problem as the event logs provide no help? Edit: I've checked that each blade is running the latest NIC drivers and all seem to be fine. Something that is confusing me - a failover or restart of the VM resolves the issue. Whilst I need to work out the underlying issue that is causing the NICs to hang I'm also concerned that the VM didn't failover to another node which would have solved the outage for me. Is there a way to configure the cluster so that it can tell that the VM guest has lost connectivity and fail it over? As things stand the cluster is assuming that the VM is running happily as I presume Hyper V says everything is great even though there is a problem.

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• Why are my Windows 7 updates continuously failing?

  - by Chris C.

  I'm an advanced level user here with an odd issue. I have two Windows Updates that are failing to install, every single time. I'm getting a mysterious "Code 1" error on both updates, an error for which I'm having difficulty finding a solution. The updates in question are: Security Update for Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package (KB2538243) System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821) [May 2011] Because these updates are failing, the Shut Down button in my start menu always has the shield icon next to it, indicating that "new" updates will be installed on shut down. But, of course, they'll fail and when the PC is restarted, the shield icon is still there. When checking the update history and viewing the details of the failed updates, I get the following: Security Update for Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package (KB2538243) Installation date: ?6/?29/?2011 3:00 AM Installation status: Failed Error details: Code 1 Update type: Important A security issue has been identified leading to MFC application vulnerability in DLL planting due to MFC not specifying the full path to system/localization DLLs. You can protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer. More information: http://go.microsoft.com/fwlink/?LinkId=216803 System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821) [May 2011] Installation date: ?6/?28/?2011 3:00 AM Installation status: Failed Error details: Code 1 Update type: Important This tool is being offered because an inconsistency was found in the Windows servicing store which may prevent the successful installation of future updates, service packs, and software. This tool checks your computer for such inconsistencies and tries to resolve issues if found. More information: http://support.microsoft.com/kb/947821 About My System I'm running Windows 7 Home Premium x64 Edition. This is a custom PC build and the OS was installed fresh, not an upgrade from a previous version. I've been running this system for about 4 months. Windows Updates aside, the system is usually quite stable. Thanks in advance for your help!

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• get-eventlog issue

  - by Jim B

  I wanted to get a quick report of some log entries I saw on a server, so I ran: Get-Eventlog -logname system -newest 10 -computer fs1 | fl I got events back however the descriptions were all wrong. Here's an example: Index : 1260055 EntryType : Warning InstanceId : 2186936367 Message : The description for Event ID '-2108030929' in Source 'W32Time' cannot be found. The local compute r may not have the necessary registry information or message DLL files to display the message, or you may not have permission to access them. The following information is part of the event:'time. windows.com,0x1' Category : (0) CategoryNumber : 0 ReplacementStrings : {time.windows.com,0x1} Source : W32Time TimeGenerated : 1/25/2010 10:43:31 AM TimeWritten : 1/25/2010 10:43:31 AM UserName : Note that if I pull the event ID property it's correct (in this case 38) Is this is known issue or is something wrong. The messages resolve fine via event viewer locally and remotely Here is the powershell version info: Name : ConsoleHost Version : 2.0 InstanceId : bc58fcf8-bba3-4ca8-8972-17dbd5d9ff08 UI : System.Management.Automation.Internal.Host.InternalHostUserInterface CurrentCulture : en-US CurrentUICulture : en-US PrivateData : Microsoft.PowerShell.ConsoleHost+ConsoleColorProxy IsRunspacePushed : False Runspace : System.Management.Automation.Runspaces.LocalRunspace Here is the revised version info: Name Value ---- ----- CLRVersion 2.0.50727.3603 BuildVersion 6.0.6002.18111 PSVersion 2.0 WSManStackVersion 2.0 PSCompatibleVersions {1.0, 2.0} SerializationVersion 1.1.0.1 PSRemotingProtocolVersion 2.1

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• IPv6: Can't ping anything - "Operation not permitted"

  - by Matthew Iselin

  I've been working on getting IPv6 support into my network, and had everything working properly for a short while. The server is running Ubuntu Server 8.10. Now however whenever I attempt to do anything related to IPv6 on the server, I get "Operation not permitted". This is coming from things like wide-dhcpv6-client (when trying to get an IPv6 address from the ISP) and radvd - both log errors of this type into syslog. Even pinging the loopback interface fails: xxx@gordon:~$ ping6 ::1 PING ::1(::1) 56 data bytes ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ^C --- ::1 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2014ms xxx@gordon:~$ sudo ping6 ::1 sudo: unable to resolve host gordon PING ::1(::1) 56 data bytes ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ping: sendmsg: Operation not permitted ^C --- ::1 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2014ms As you can see, I have attempted pinging as root, as most of the material I've found on the internet points to a permission problem. However, that has not helped. Any hints to getting unstuck would be appreciated.

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• Create SAMBA node trust relationship to Windows 2003 PDC server

  - by Rod Regier

  I am having problems creating a trust relationship between an OpenVMS/IA64 node running V/IA64 8.3-1H1, TCPIP 5.6 ECO 5, CIFS 1.1 ECO1 PS11 (SAMBA 3.0.28a) and Windows 2003 server running as a PDC. I do have two other OpenVMS/Alpha nodes running V/A 8.3, TCPIP 5.6 ECO 4, CIS 1.1 ECO1 PS10 (SAMBA 3.0.28a) with working trust relationships to the same Windows 2003 server. Looking for assistance in resolving the trust "handshake". \\ Details from failing node. Unless otherwise noted, corresponding files on working nodes are similar or identical. SMB.CONF extract: [global] server string = Samba %v running on %h (OpenVMS) workgroup = WILMA netbios name = %h security = DOMAIN encrypt passwords = Yes name resolve order = lmhosts host wins bcast Password server = * log file = /samba$log/log.%m printcap name = /sys$manager/ucx$printcap.dat guest account = DYMAX print command = print %f/queue=%p/delete/passall/name="""""%s""""" lprm command = delete/entry=%j map archive = No printing = OpenVMS net rpc testjoin [2010/08/13 16:09:28, 0] SAMBA$SRC:[SOURCE.RPC_CLIENT]CLI_PIPE.C;1:(2443) get_schannel_session_key: could not fetch trust account password for domain 'WILMA' [2010/08/13 16:09:28, 0] SAMBA$SRC:[SOURCE.UTILS]NET_RPC_JOIN.C;1:(72) net_rpc_join_ok: failed to get schannel session key from server W2K3AD2 for domain WILMA. Error was NT_STATUS_CANT_ACCESS_DOMAIN_I NFO Join to domain 'WILMA' is not valid net rpc join "-Uaccount%password" tdb_open_isam: error verifying status of file SAMBA$ROOT:[PRIVATE]secrets.tdb tdb_open_isam: errno value = 1 [2010/08/13 16:21:13, 0] SAMBA$SRC:[SOURCE.PASSDB]SECRETS.C;1:(72) Failed to open /SAMBA$ROOT/PRIVATE/secrets.tdb [2010/08/13 16:21:13, 0] SAMBA$SRC:[SOURCE.UTILS]NET_RPC.C;1:(322) error storing domain sid for WILMA tdb_open_isam: error verifying status of file SAMBA$ROOT:[PRIVATE]secrets.tdb tdb_open_isam: errno value = 1 [2010/08/13 16:21:13, 0] SAMBA$SRC:[SOURCE.PASSDB]SECRETS.C;1:(72) Failed to open /SAMBA$ROOT/PRIVATE/secrets.tdb [2010/08/13 16:21:13, 0] SAMBA$SRC:[SOURCE.UTILS]NET_RPC_JOIN.C;1:(409) error storing domain sid for WILMA Unable to join domain WILMA. \\ Example from other node: net rpc testjoin Join to 'WILMA' is OK

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• Xen HVM networking wont work

  - by Nathan

  I'm trying to get a Xen HVM network working using route however I am failing. Xen PV works fine using Ubuntu but when installing Ubuntu on HVM it fails to pick up the network. I'll let you know now that I'm not that experienced with Xen so I would appreciate any help. vm104 is the HVM thats causing me the problems, here is the configs that I believe should help resolve the problem. [root@eros vm104]# cat vm104.cfg import os, re arch = os.uname()[4] if re.search('64', arch): arch_libdir = 'lib64' else: arch_libdir = 'lib' kernel = '/usr/lib/xen/boot/hvmloader' builder = 'hvm' memory = 6000 shadow_memory = '8' cpu_weight = 256 name = 'vm104' vif = ['type=ioemu, ip=85.25.x.y, vifname=vifvm104.0, mac=00:16:3e:52:3d:fe, bridge=xenbr0'] acpi = 1 apic = 1 vnc = 1 vcpus = 4 vncdisplay = 3 vncviewer = 0 vncconsole = 1 vnclisten = '217.118.x.y' vncpasswd = 'kCfb5S4tE7' serial = 'pty' disk = ['phy:/dev/vpsvg/vm104_img,hda,w', 'file:/home/solusvm/xen/iso/Windows-Server-2008-RC2.iso,hdc:cdrom,r'] device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm' boot = 'cd' sdl = '0' usbdevice = 'tablet' pae=1 [root@eros /]# cat /etc/xen/xend-config.sxp | egrep -v "(^#.*|^$)" (xend-unix-server yes) (xend-unix-path /var/lib/xend/xend-socket) (xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$') (network-script network-route) (vif-script vif-route) (network-script 'network-route netdev=eth0') (dom0-min-mem 256) (dom0-cpus 0) (vnc-listen '0.0.0.0') (vncpasswd '') (keymap 'en-us') The Windows install will not pick up the network - I've tried setting the IP manually by using the Xen servers IP as the gateway and setting the main IP in Windows but no luck. If anyone needs any more information let me know and I appreciate any input!

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• likewise-open and samba as pdc

  - by Knight Samar

  Hi, We have successfully implemented a Samba Primary Domain Controller for a hybrid Windows-Linux environment. So now I am setting up dual-boot clients with Windows XP and Ubuntu 9.10. Windows XP can be easily added to the Samba Domain. Everything is manageable. No worries. But when I try using likewise-open 4.1 to add the Ubuntu 9.10 to the samba domain, it cannot locate the domain controller. domainjoin-cli --loglevel verbose join MYDOMAIN root Error: Unable to resolve DC name [code 0x00080026] Resolving 'MYDOMAIN' failed. Check that the domain name is correctly entered. Also check that your DNS server is reachable, and that your system is configured to use DNS in nsswitch. I even tried mydomain.com variations but to no avail. What am I missing ? I read up a document on MSDN wherein it says that the Domain Controller creates some SRV records in the DNS server. I guess, I don't have them on my BIND. Do you think that is the problem ? If yes, can anyone please point out how and what SRV records need to be added. Thanks.

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• Router slowing my connection?

  - by Roberto

  I have a Linksys WRT54G and I pay for a 12Mbps connection. I've been testing my connection using speedtest.net for many days and always get 8Mbps. I called the support and they told me to bypass the router and test. I did it and got 16Mbps (much more than I pay for), so I thought "this guy just changed my speed so can he blame my router", and he blamed it. But to my surprise, everytime I bypass the router I get 16Mbps and when I use the router I get 8Mbps. Is this guy trolling me somehow (configuring the VOIP-modem-stuff to different profiles depending o the MAC address connecting to it) or is my router a POS? How can I find out? I don't know what's the thing the router connects to, it's a kind of VOIP adapter; the link is this one, but unfortunately I don't think you'll understand because it's in Portuguese. I know they can remotely connect to it, that's the origin of my conspiracy theory :) I just tested wired to the router and got 10Mbps (and still 8Mbps on wifi and 16Mbps without router) O_o I'm 5cm away from my router, so no obstacles to interfere, right? ------ UPDATE ------- It's a WRT54G V8, I'm using firmware v8.00.7 (will install 8.00.8 tomorrow, but I saw that it's only a minor fix to UPnP denial of service security vulnerability). Results: IPerf LAN-LAN: 80Mbps IPerf LAN-WLAN: 19Mbps (therefore we can ignore wireless issues/settings) I wasn't able to make the (W)LAN-WAN NAT-enabled test with IPerf, I get a connection refused error. I'm not sure if did it right: ran in server mode, configured router to forward that port to my IP and tried to connect to my internet IP that got from this site. I don't think there is a way to disable NAT using this firmware. Question: Let's suppose it's an underpowered hardware issue. Is it right to assume that custom firmwares could resolve the issue because they are possibly better implemented and would make better use of the router resources? I couldn't find any references pointing to wired performance improvements with the use of custom firmware.

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• Probelms Intstalling Trac using apt-get Ubuntu Jaunty

  - by Ben Waine

  Hi, I'm having some issues getting apt to install trac correctly on my Ubuntu Jaunty Box. Using the command 'apt-get install trac' I get the following output: root@myserver:~# apt-get install trac Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation: The following packages have unmet dependencies: trac: Depends: python-setuptools (> 0.5) but it is not installable Depends: python-pysqlite2 (>= 2.3.2) but it is not going to be installed Depends: python-subversion but it is not installable Depends: libjs-jquery but it is not installable Recommends: python-pygments (= 0.6) but it is not installable or enscript but it is not installable Recommends: python-tz but it is not installable E: Broken packages I have successfully used the command on my karmic kola desktop machine and am able to create new projects etc. I thought I might be able to solve the problem by installing all python related extensions. This produced a very similar output. I have Main, universe and multi-verse repositories enabled. Its a remote machine and I have no access to the gui. Hope someone can help, googleing failed to solve the issue or find a solution! Thanks, Ben

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• Using dnsmasq for accessing multiple nameservers assigned by DHCP

  - by Ash

  At my work desktop running openSUSE 11.4, I have a local network which gets its address, domain (work.site) and nameservers (10.100.1.1, 10.100.1.2) info through DHCP - which get written into /etc/resolv.conf I get to access the internet using the work network, and these 2 nameservers end up returning the entries for any public domain name lookups on the internet. I also have a private VPN that I end up connecting. The nameserver (10.111.1.1) and domain (private.site) are rarely bound to change for this network, but currently they're pushed by the openVPN client into networkmanager, and which also gets merged with the existing /etc/resolv.conf My resolv.conf ultimately ends up looking like this: search private.site work.site nameserver 127.0.0.1 nameserver 10.111.1.1 nameserver 10.100.1.1 As you can see the 2nd nameserver from my work network was pushed out because of the max 3 entry limitations. It is fine still, but would be a problem if that nameserver goes down for maintenance or something. So I found out that dnsmasq could help me here, and hence I setup dnsmasq just as a local DNS resolver without any DHCP support. So right now this is my /etc/dnsmasq.conf: resolv-file=/etc/resolv.conf server=/private.site/10.111.1.1 server=/1.111.10.in-addr.arpa/10.111.1.1 listen-address=127.0.0.1 bind-interfaces log-queries I've made dnsmasq get the list of nameservers from /etc/resolv.conf since NetworkManager seems to be updating this list correctly (for a max of 3 nameservers). I'm able to resolve the host names in both the networks correctly. So these are the questions I have: Is there a way I can make either NetworkManager or dhclient write out the list of nameservers somewhere else which I can make dnsmasq use as resolv-file ? How do I make dnsmasq use certain nameservers as the default for all queries ? Right now I notice that lookups for public domains on the internet are usually sent to both the nameservers - the one on work.site as well as private.site. It would be good if I can limit this only to work.site.

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• Where should CentOS users get /usr/share/virtio-win/drivers for virt-v2v?

  - by Philip Durbin

  I need to migrate a number of virtual machines from VMware ESX to CentOS 6 KVM hypervisors. Ultimately, I wrote an RPM spec file that solved my problem at https://github.com/fasrc/virtio-win/blob/master/virtio-win.spec but I'm not sure if there's another RPM in base CentOS or EPEL (something standard) I should be using instead. Originally, I was getting this "No root device found in this operating system image" error when attemting to migrate a Window 2008 VM. . . [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm virt-v2v: No root device found in this operating system image. . . . but I solved this with a simply yum install libguestfs-winsupport since the docs say: If you attempt to convert a virtual machine using NTFS without the libguestfs-winsupport package installed, the conversion will fail. Next I got an error about missing drivers for Windows 2008. . . [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm my-vm_my-vm: 100% [====================================]D virt-v2v: Installation failed because the following files referenced in the configuration file are required, but missing: /usr/share/virtio-win/drivers/amd64/Win2008 . . . and I resolved this by grabbing an iso from Fedora at http://alt.fedoraproject.org/pub/alt/virtio-win/latest/ as recommended by http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers and building an RPM from it with this spec file: https://github.com/fasrc/virtio-win/blob/master/virtio-win.spec Now, virt-v2v exits without error: [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm my-vm_my-vm: 100% [====================================]D virt-v2v: my-vm configured with virtio drivers. [root@kvm01b ~]# Now, my question is, rather that the virtio-win RPM from the spec file I wrote, is there some other more standard RPM in base CentOS or EPEL that will resolve the error above? Here's a bit more detail about my setup: [root@kvm01b ~]# cat /etc/redhat-release CentOS release 6.2 (Final) [root@kvm01b ~]# rpm -q virt-v2v virt-v2v-0.8.3-5.el6.x86_64 See also Bug 605334 – VirtIO driver for windows does not show specific OS: Windows 7, Windows 2003

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• Microsoft Remote Desktop Services - Android

  - by Matt Rogers

  We have recently started testing Remote Desktop Services. We have deployed the environment using the latest server, Windows Server 2012 R2. We have deployed the Web Access Roles, RD Gateway, Connection Broker Virtualization Host and Session Host. We are running both, Virtual machine-based and Session-based deployments. All of these are working as expected internally and externally when using a Windows workstation as the RDS client, however, the Android client is unable to launch applications. Once you install the app from Google Play you are given a screen to add Remote Resources. After entering the appropriate URL, username and password we see the applications that have been published. Unfortunately, when we attempt to launch an app we get the following error: Connection Error Host not found. Please provide the fully-qualified name or the IP address of the host. We have already entered this information otherwise I don't believe we would be able to see the published applications. I think the error is related to the certificate and how it is being used to connect to the applications. Since this is in our lab environment we have not configured a valid external certificate on the servers and the trusted certificate that is installed on the android tablet points to our internal server / domain name. What I would like to know: Has anyone configured RDS Web Access on Server 2012 R2 and attempted to externally connect an Android or iOS device using the Microsoft supported Remote Desktop client. Are others experiencing the same problem we are? Were you able to resolve the issue? Was it related to the external cert / host name?

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• Google Public DNS is not used in trace route

  - by IT researcher

  In my PC i am using google public DNS as DNS server.In Internet protocol(TCP/IP) properties i have set Preferred DNS server as 8 8 4 4 and Alternate DNS server as 8 8 8 8. According to me this DNS server should be used to resolve any request to website to its IP by using this DNS servers.(see google DNS and How Domain Name Servers Work). But when i checked trace route to a website in my PC i got following Tracing route to www.google.com [74.125.236.80] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms 192.168.1.201 2 360 ms 349 ms 292 ms 122.178.216.1 3 145 ms 107 ms 148 ms 122.166.32.121 4 32 ms 53 ms 120 ms 122.166.32.9 5 45 ms 42 ms 121 ms 122.175.255.29 6 63 ms 76 ms 51 ms 182.79.255.45 7 52 ms 134 ms 61 ms 72.14.194.22 8 86 ms 59 ms 72 ms 72.14.232.202 9 106 ms 107 ms 60 ms 66.249.94.39 10 101 ms 103 ms 117 ms 209.85.249.235 11 148 ms 224 ms 276 ms 74.125.236.80 Trace complete. When i checked all these IP in who.is i found that it is of my ISP. So my question is where does Google public DNS is used? Also how come my ISP's nameserver is used even if i set google public dns as my dns server in my PC?(OR does my any settings are wrong)

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• RTL8192SU Linux Issue Installing Driver

  - by s32ialx

  OK I've read tons of fourms of people getting the onboard RTL8192SE working and the RTL8192SU working dif is U = USB they are both N and i have both Toshiba L500D-00T pre-installed Win Vistax64-HP and i have obtained the free Win7x64-HP upgrade the onboard wificard sucks and can't hold a stable connection for more then 20minutes in windows but the usb is amazing. Now problem is i tried both Ubuntu and Mandriva with no resolve the issue is the onboard drive detects and actually SHOWS that it's there but no wireless networks detect so it's saying no SSID's are broadcasting which i know is a lie since I'm running a 2wire bell dsl modem with built in wifi and a Linksys wrt54g w/ DD-WRT firmware and both are broadcasting fine. Why don't i use the USB? In the hardware device manager in mandriva it shows up as unknown but shows that it's realtek and that it's a 8192 chipset. but no option to for a driver install and when i do a make in terminal i get this error and no clue what it means [root@John-PC rtl8192se_linux_2.6.0010.1020.2009_64bit]# make make: *** /lib/modules/2.6.31.12-desktop-3mnb/build: No such file or directory. Stop. make: *** [all] Error 2 [root@John-PC rtl8192se_linux_2.6.0010.1020.2009_64bit]# any help appreciated. and just encase I'm running currently Mandriva Spring 2010 Free

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• Issues resolving DNS entries for multi-homed servers

  - by I.T. Support

  This is difficult to explain, so bear with me. We have 2 domain controllers, each multi-homed to straddle 2 internal subnets, (subnet A and subnet B) and provide dns, dhcp, and ldap authentication. Both domain controllers each have 2 DNS entries. both entries have identical host names, but correspond to subnet A & subnet B respectively (example entries shown): dc1 host 192.168.8.1 dc1 host 192.168.9.1 dc2 host 192.168.8.2 dc2 host 192.168.9.2 We also have a 3rd subnet for our dmz, (subnet C) which neither domain controller has an IP address on, but our firewall/routing tables provide access to subnet A from subnet C and vice versa, but don't allow access to subnet B from subnet C. Here's my issue. How can I force/determine which dns entry is used when a server on subnet C queries either domain controller by host name? Right now it seems to randomly pick one of the two entries, swaps out the name for the IP address and that's that. The problem is if it randomly selects the entry that corresponds to the 9.x subnet B (no access from subnet C), then the server fails to resolve. If it picks the entry for the 8.x subnet A then it resolves (firewall/routing tables defined for communication between these 2 subnets) Here's what I'd like to know: What are Best Practices (if any) for dealing with DNS resolution on subnets that the DNS servers don't have a presence on? Can I control something akin to a metric value to force an order of DNS resolution when there are multiple entries for the same host name that correspond to different IP subnets? Should I even have 2 DNS HOST entries for the same name? Here's what I'd like to avoid: Making edits to the HOSTS files of servers on subnet C to force DNS resolution of the hostname to the appropriate subnet Adding NIC's to the DC's to have them straddle the DMZ as well, thus obtaining a third DNS entry that corresponds to subnet C Again, my apologies if this was too verbose / unclear. Thanks!

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• Inter-vlan routing issues

  - by DKNUCKLES

  I've been brought in to help administer a network and I've run into an issue - I'm not sure why this one is beyond me, however I figure an extra set of eyes on the problem may help resolve the issue. I have an HP MSM720 controller and at the time I'm trying to set up a basic hotspot set up with access points. For the time being I'm just looking to have people authenticate with a PSK and access the internet and other resources (namely printers) on other vlans. The user authenticates and the DHCP server on the controller gives them a 192.168.1.0/24 address. They are able to successfully browse the internet and ping machines on other networks, however they are unable to print to network printers that sit on the same LANs as the very computers that wireless clients can ping. The (extremely simplified) topology is as follows Computers on the wireless 192.168.1.1 network are able to ping computers on the 192.168.0.0 network, however cannot ping or print to the printers on the same network. I'm baffled and I have no idea why this is the case. Can anyone shed some light on this for me? Can someone spot the error of my configuration? EDIT : It should be noted that for whatever reason other computers on the 10.0.100.0/24 network cannot even ping the gateway of the Wireless Access network (192.168.1.1) - I'm not sure if this is relevant. These are the VLANS listed on the controller.

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• Asterisk/FreePBX: Allow other Google Talk clients to ring when using motif module

  - by larsks

  I've recently installed FreePBX to act as a link between a SIP soft phone and my Google Talk account. It was easy to set up and outbound calls work just fine, but I've run into two problems with inbound calls that I'm not sure how to resolve. I'm using an inbound route to forward all calls from Google to my soft phone. If the soft phone is not currently registered, Asterisk answers and immediately generates a fast-busy signal (reporting CHANUNAVAIL in the logs), and the call is lost. If the soft phone is registered, Asterisk "answers" the call before rining the soft phone, which means that other Google Talk clients never ring (since from their perspective someone has answered the call). For solving (1) seems like I could use the ChanIsAvail() function (or this answer) to prevent Asterisk from answering in the event that the phone isn't registered. However, I'm not sure what to do about (2), because the behavior I want is for Asterisk to not "answer" the call until I answer the call on the soft phone. How do I configure Asterisk (ideally within the FreePBX framework) such that I can continue to receive calls at other Google Talk clients in addition to forwarding them to a SIP phone?

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• Why do I have untrusted certificates for Google, Yahoo, Mozilla and others?

  - by jackweirdy

  In the HTTPS/SSL section of chrome://chrome/settings, I see the following: What does this mean, and is there something wrong? I have a basic understanding of SSL/TLS - I'm not claiming to be completely familiar, but I'm fairly confident I know my way around it - but I don't understand why I have certificates installed on my machine specifically for these sites. From my understanding, I should have the certificates for Certificate Authorities, and any site I visit and use SSL/TLS should have a certificate signed by one of these trusted CAs for me to trust the site. My worry is that if someone has maliciously installed a certificate for these sites on my machine, they could perform a DNS spoofing attack (or a number of other attacks) to hijack my connection to my email account without me knowing, and as they've got the private counterpart to the certificate on my machine, decrypt the communication. NB: I'm also aware that CA certificates aren't just within Chromium and are used system wide as part of libssl - they're stored in /etc/ssl/certs. What I'd like to know is: Is this correct? - The big red boxes make me think no Is this malicious or benign? What can I do to resolve this problem? (If indeed it is a problem) Thanks :)

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• process and memory issue on linux server

  - by zapping

  Need some assistance in analyzing apache and php process running on linux server. Its a 8-core intel processor with 4GB ram. When the website on it runs the top displays like this. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 23459 username1 16 0 151m 27m 8388 S 11.3 0.7 0:11.71 php5 23730 username1 16 0 151m 28m 8388 S 11.3 0.7 0:03.87 php5 23458 username1 16 0 151m 28m 8388 S 3.0 0.7 0:19.20 php5 16202 mysql 15 0 459m 38m 4624 S 0.7 1.0 62:33.81 mysqld 24141 nobody 15 0 311m 5832 2304 S 0.3 0.1 0:00.03 httpd Why does the command say php5 when the website is accessed. Both apache and php was preconfigured so not sure whats done there. Tried setting up the same site and db on a different server but on it the process shows httpd always and not php5. The site uses mysql db. The problem is server load seems to go till about 5.x when the website was access by about 16users. When the free -m command was given the output shows total used free shared buffers cached Mem: 3941 3727 213 0 236 2734 -/+ buffers/cache: 756 3184 Swap: 4095 0 4095 Lots of memory seems to be in cache and free memory is less. Even when the website is not accessed that is leaving it very much idle for about 2days the free memory showed just 190. When the site is accessed the free memory seems to be go till 90mb then it increases to about 150mb. It always seems to remain just about 200mb. Is it somehow related to the server load showing 5.x. Will adding some more RAM resolve the load issue?

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• Windows 2003 DNS or IIS6 Problem?

  - by Mario

  Weird DNS problem... We have an intranet located internally on a windows 2003 / iis6 server - DNS handled internally on another windows 2003 server. The intranet, amongst other functions, hosts a ecommerce store I wrote that sells nike apparel embroidered with our company logo. Up until recently, it would send an email to payroll and the cost would be deducted from the employees paycheck. lets say this store is located at http://mydomain.com (only available internally) Now, we've been told by the accountants that we can no longer auto deduct from payroll and the employee needs to pay with a credit card or cash. So i went to thawte.com and ordered an SSL cert to be on the safe side (even though the CC gateway is secure) and they told me i need to drop the .com from the domain name Not wanting to mess with a system thats perfectly functional, i created another DNS entry that just points to mydomain (no .com) and left the old one in there. so they would go to http://mydomain On my Mac (OS X 10.6) i can hit either one just fine On Windows XP / Windows XP Embedded or Windows 7 (the vast majority of the pc's on our network) http://mydomain - returns nothing http://mydomain.com still works https://mydomain.com works but says the cert is invalid (as it should, it was issued to mydomain - not mydomain.com) my question is: why does it work on my Mac and not on a Windows PC (i get dhcp and dns just like any other pc on the network) and will removing the .com one from the DNS server resolve this? I've done all the usual attempts - ipconfig /flushdns, ipconfig /renew and release even going so far as to stop and restart DNS client on my Windows 7 box; rebooting and shutting down - adding a regedit entry something along the lines of SecureResponses and rebooting nothing works... I think its the .com and the not conflicting in DNS but i'm not sure - and why not on OS X We're closed on sunday and i'm going to remote in and see what happens if i remove the .com from DNS but any other ideas? -Mario

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• compose-key mappings differ between gtk and qt apps

  - by intuited

  I'm noticing that there is an inconsistency in the output of one of the compose-key combos. When I type ( [Compose] . . ) under Chrome, gedit, gnome-terminal, or roxterm I get the character '?'. This is a small raised dot: $ echo -n '?' | xxd 0000000: cb99 .. When I type the same combo under konsole, yakuake, or kate, I get the character '…'. This is an ellipsis: $ echo -n '…' | xxd 0000000: e280 a6 ... This is not a font issue: if I copy-paste the characters from an app using one toolkit to an app using the other, its appearance is maintained. I use a few other combos pretty regularly and they seem to work consistently across toolkits. I think this is a pretty recent phenomenon. I upgraded from Ubuntu 8.10 to 9.10 fairly recently so this might be related. I'm not sure if this will reoccur if I restart X, and I'd rather not find out. Can someone explain how this is possible, and what I can do to resolve it? I'd like to have the ellipsis appear in all apps when that combo is entered.

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• Resolving "JBoss Web Console is Accessible to Unauthenticated Remote Users" vulnerability

  - by IAmJeff

  Our security team has determined there is a vulnerability in one of our systems. We are using version JBoss 5.1.0GA on RHEL 5.10. Vulnerability description: JBoss Web Console is Accessible to Unauthenticated Remote Users Yes, this looks familiar. Refer to Question 501417. I do not find the answer there complete. Can someone (or multiple someones) answer Does a newer version of JBoss fix this vulnerability? Are there links describing, in more detail, manual modification of JBoss configuration files to resolve the issue? Are there others options to remediate this vulnerability? Why don't I find the other answer complete? I'm not at all familiar with JBoss, so this answer seems a bit too simple. The web-console.war contains commented-out templates for basic security in its WEB-INF/web.xml as well as commented-out setup for a security domain in WEB-INF/jboss-web.xml. Just uncomment those basic security blocks and restart? Is there anything else I need to include? This seems generic. Do I need to include anything about my environment, such as absolute paths, etc.? Am I making this too complicated?

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• WIM2VHD failing with "Cannot derive Volume GUID from mount point."

  - by Jacob

  I'm trying to use WIM2VHD according to the instructions on Scott Hanselman's blog post to create a Sysprepped VHD image to boot from. I've installed the WAIK, and I have my Windows 7 sources mounted as a virtual drive. When I try to run WIM2VHD like this: cscript WIM2VHD.wsf /wim:F:\sources\install.wim /sku:Ultimate /vhd:E:\WindowsSeven.vhd /size:30721 I get the following log: Log for WIM2VHD 6.1.7600.0 on 11/2/2009 at 10:51:18.16 Copyright (C) Microsoft Corporation. All rights reserved. MACHINE INFO: Build=7600 Platform=x86fre OS=Windows 7 Ultimate ServicePack= Version=6.1 BuildLab=win7_rtm BuildDate=090713-1255 Language=en-ZA INFO: Looking for IMAGEX.EXE... INFO: Looking for BCDBOOT.EXE... INFO: Looking for BCDEDIT.EXE... INFO: Looking for REG.EXE... INFO: Looking for DISKPART.EXE... INFO: Session key is E01E1ED7-C197-4814-BDE4-43B73E14FCC4 INFO: Inspecting the WIM... INFO: Configuring and formatting the VHD... ******************************************************************************* Error: 0: Cannot derive Volume GUID from mount point. ******************************************************************************* INFO: Unmounting the VHD due to error... WARNING: In order to help resolve the issue, temporary files have not been deleted. They are in: C:\Users\Jacob\AppData\Local\Temp\WIM2VHD.WSF\E01E1ED7-C197-4814-BDE4-43B73E14FCC4 *emphasized text*Summary: Errors: 1, Warnings: 1, Successes: 0 INFO: Done. Any ideas?

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• How to fix a Postfix/MySQL/Dovecot Unknown Host Issue?

  - by thiesdiggity

  I am having an issue with one of my Postfix/Dovecot mail servers and I'm unsure how to fix the problem. I will try to explain it in detail, here it goes: I have an Ubuntu server setup using Virtual hosting with Postfix, Dovecot and MySQL. We have one domain setup as a virtual domain, for this example I am going to use mail.example.com. Under that domain we have one email address. I have another server (MS Exchange) setup using another one of my sub-domains, ex.example.com. The problem is that when I SMTP into the account on mail.example.com and try to send an email to an account on ex.example.com, I get the email returned back to us with an "unknown host" error. Now, I know that the mail.example.com server can resolve the ex.example.com domain because I can ping/dig while SSH'd into it. I can also log into Postfix via Telnet and send an email to an ex.example.com mailbox. I'm guessing that it has something to do with Postfix/Dovecot looking locally for the domain in the virtual domain list because of the tld domain (example.com)? If that's the case, how do I get Postfix/Dovecot to only look locally for the entire URL (mail.example.com) and if it doesn't find it, send it to the correct server by looking up the MX/A records (which I know exist and are setup correctly)? I have been working on this all day and any guidance would be GREATLY appreciated! Thanks for your time!

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• Missing Home Folder XP Clients 2008R2 Domain

  - by minamhere

  We just completed a migration from Server 2003 to Server 2008R2. Everything seems to have gone well except that many of our desktops have stopped mapping the Home Folder as set in Active Directory. Other mappings that are defined on individual clients are mapping just fine, these mappings are all on the same file server as the failing Home Folders. Half of the users are on 1 file server and half are on another. Users from both servers are having this problem. I have enabled the Group Policy setting to "Wait for network before logging in". I enabled the policy to "Run Logon Scripts synchronously". There are no errors on the Domain Controller or either File Server. When I enabled Group Policy Preferences as an attempted workaround, I get this error: The user 'V:' preference item in the '<Policy Name>' Group Policy object did not apply because it failed with error code '0x800708ca This network connection does not exist.' This error was suppressed. This seems to indicate that the network connection is not ready by the time Group Policy is processed. But isn't this the point of the "Wait before logging in" and "Run Logon scripts synchronously" settings? Some other background facts: The new Server 2008R2 installation is a Virtual Machine. It is on a new Subnet in a different building from the old server. DNS and DHCP were also migrated from the old DC to this new DC. These Home Folders were all working properly before the migration. Are there new security restrictions/policies in Server 2008R2 that might be causing this? Is there a way to check whether I have an underlying network connectivity issue? Maybe moving the server to the new building is causing a delay/timeout? Any thoughts or ideas on what could be causing this or how I can resolve this? Thanks.

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