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  • AWS Large Instance: /mnt does not show all the space that should be available

    - by Emile Baizel
    I just created a Large (m1.large) 64 bit instance which comes with 850 GB instance storage. Look at the Large Instance http://aws.amazon.com/ec2/instance-types/ A 'df -h' from the root folder gives me the output below. The /mnt is where I'm thinking the instance storage is but here it is only showing me 414G. I have set up two servers and both are showing the same numbers. root@ip-11-11-11-11:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 7.9G 1.1G 6.5G 14% / none 3.7G 112K 3.7G 1% /dev none 3.7G 0 3.7G 0% /dev/shm none 3.7G 48K 3.7G 1% /var/run none 3.7G 0 3.7G 0% /var/lock /dev/sdb 414G 199M 393G 1% /mnt

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  • WAN interface responds as LAN when request comes from LAN, is that correct?

    - by Eugenio Miró
    Hi Everyone! I have a problem with my router/modem. I've published an HTTP service from one of my internal computers and when I access the service from the internal lan using the external IP address the modem responds instead of redirecting the call to the forwarded port. I can access the service from outside however, but from the internal network the modem responds to my calls. I'm using a ZTE ZXDSL 831 Series modem with ZXDSL 831IIV7.5.1e_E09_BR1 firmware. Thanks in advance!

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  • Setting a custom timeout to nmblookup

    - by C2H5OH
    As part of a batch script, I have the following command: hostname=$(nmblookup -A $ip_address | awk '$2 == "<20>" {print $1}') Which works fine from a functinality perspective, even for unresolved hosts. The problem is that when the IP address is not reachable or the remote machine does not respond to the SMB request, the command takes about ten seconds to complete. Therefore, the question is simple: is there a way to lower the elapsed time in such cases? Or, in other words, is there a way to set a custom timeout for the nmblookup command? NOTE: I'm interested in solutions that do not make use of SIGALRM or similar mechanisms; if they exist. The nmblookup version is 3.6.3 from Ubuntu 12.04 LTS.

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  • Lots of TIME_WAIT connections in netstat (Windows Server 2008)

    - by Rhys Causey
    I'm having some issues on a Windows 2008 server with some network connections not going through. For instance, in a web application on the server, we need to open a socket connection to another server, and this fails sometimes with the following message: Only one usage of each socket address (protocol/network address/port) is normally permitted I looked up the error, which led me to this page: http://msdn.microsoft.com/en-us/library/aa560610(v=bts.20).aspx, which indicates that it might be TCP/IP port exhaustion. When I perform netstat -n, I get tons of TIME_WAIT connections on port 80. Does anyone have any idea what could be causing this?

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  • Cisco 877 as a VPN server?

    - by Massimo
    I have a Cisco 877 router which connects my network to the Internet using an ADSL line, a single public IP address and NAT; the IOS version is 15. Everything is working ok, but I'd like to configure this router to be a VPN server, to be able to connect to the network from the outside. I've tried looking for documentation, but everything I can find is related to having the 877 act as a VPN client, or to site-to-site VPNs; I can't find anything about letting single remote computers access the internal network, which is something I can do quite easily using Windows' RRAS or ISA Server. Can the Cisco 877 act as a VPN server for remote client computers? (Looks like it should, but just to be sure...) Which type of VPNs does it support? Do they require some special software on the client machines, or can they be used by standard out-of-the-box Windows computers? And, finally: how to set up this?

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  • Setup Cisco RVS4000 QOS for VOIP

    - by andyknas
    Just switched from dedicated T1's with analog phone lines to cable modem with 10/2 uplink. We're having some VOIP call quality issues on the outgoing side when bandwidth is stressed and I need to setup QOS or a VLAN on our RVS4000 router. Currently all phone traffic (talkswitch device and ip phones) are on it's own d-link PoE switch, and all workstations are on a LinkSys 1GB switch. Both switches are plugged into ports on the RVS4000. I'd like to set it up so that the dlink port has ~512Mbsp dedicated to it for voice at all times. It's my understanding that with a VLAN or QOS I can set this up. I've got QOS setup already with port 5060 to have high priority but it doesn't seem to make a difference.

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  • Using Ubuntu Karmic as an L2TP Client for VPN

    - by James Lawrie
    I'm trying to connect to a VPN service over L2TP using Karmic as a client and it's not working. The only details I have are the remote IP address, username & password, and a shared secret string; this is enough for Windows but doesn't appear to be enough for Ubuntu. I've tried using network-manager-vpnc and vpnc from the terminal to connect and I get "no supported authentication", and trying with OpenSwan it says "unable to identify either side of the connection". I'd really appreciate some help here if anyone else has implemented this successfully.

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  • Connecting to a remote server through OpenVPN when local network subnet conflicts with remote network's subnet

    - by John Russell
    After connecting to a remote location via OpenVPN, I am trying to access a server on a network that exists on a subnet such as 10.0.1.0/24. However, the network I am trying to access this remote server from is on the same subnet: 10.0.1.0/24. I am unable to connect to my remote server via typing in its IP because of this conflict. I am unable to even access the public internet while connected to the VPN. Does anyone know how to mitigate this issue? I have access to the OpenVPN Access Server.

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  • Using the Juniper EX3300 Switch as a router?

    - by Richard Whitman
    I have a Juniper EX3300 switch in a data center. And I have connected one of the uplink ports (ge-0/1/0) to my ISP's router. I want to configure it so that all the devices connected to ports in the same VLAN as ge-0/1/0 can access the Internet. I have done some research, and I haven't gotten anywhere really. I have configured the interface as follows: ge-0/1/0 { ether-options { no-auto-negotiation; link-mode full-duplex; speed { 1g; } } unit 0 { family inet { address xx.xx.xx.xx/32; } } } where xx.xx.xx.xx is the "Customer Router Port IP" assigned by my ISP. When I try to commit, I get the following error: Interface ge-0/1/0.0 not enabled for switching Can some one tell me what is the right way to configure it?

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  • Dual Nic, one keeps dropping

    - by user1215018
    I'm running windows server 2008 r2 on a dell poweredge 2850. I have 2 NICs, one is configured behind a firewall with a dhcp server on the main local LAN and another one has it's own dedicated connection to one of our 13 static IPs. So in a nutshell we have 2 of our static IPs going to this server, one indirectly through a firewall/dhcp server, and the other directly. I am trying to reach IIS on port 80 and port 443. The problem is that the NIC with the direct connection (NIC2) keeps dropping and says either "No internet connection" or "Unauthenticated". However, the NIC behind the firewall (NIC1) has no problems at all. Update: This is the second time this has happened in 3 days and each time the fix has been enabling the dhcp client on the NIC, allowing it to error out to a 169.x.x.x address, then re-enabling the nic with it's static IP assignment.

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  • Setting up Windows 2008 with VPN and NAT

    - by Benson
    I have a Windows 2008 box set up with VPN, and that works quite well. NPS is used to validate the VPN clients, who are able to access the private address of the server, once connected. I can't for the life of me get NAT working for the VPN clients, though. I've added NAT as a routing protocol, and set the one on in the VPN address pool as private, and the other as public - but it still won't NAT connections when I add a route through the VPN server's IP on the client side (route add SomeInternetIp IpOfPrivateInterfaceOnServer). I know I can reach the server's private interface (which happens to be 10.2.2.1) with remote desktop client, so I can't think of any issues with the VPN.

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  • Yahoo flagging mail as spam when using relay server

    - by modulaaron
    I'm using Postfix to relay mail from my site to my mail server. Mail is received properly at my Gmail and Hotmail accounts - only Yahoo is the problem. The Yahoo mail headers state: Received-SPF: none (mta1133.mail.mud.yahoo.com: domain of [email protected] does not designate permitted sender hosts) In contrast, the Gmail headers state: Received-SPF: pass (google.com: domain of [email protected] designates 74.50.xxx.xxx as permitted sender) client-ip=74.50.xxx.xxx; Reverse DNS is set up correctly, as is my SPF record. Does anyone have any suggestions as to what I can do to solve the Yahoo problem (short of contacting Yahoo, as this is a brand new mail server)? FYI - domainkeys are on the origin server and are showing as passed. Thanks

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  • Ping, firewall or DNS problem on Win Server 2008 R2

    - by Fred Kaiser
    Hi there, I've installed windows server 2008 as a VM for the developers here to work on. Installed SQL Server 2008 as well as IIS7. I am not quite sure why, I can remote into that machine using the name I gave to it (winserverdev) but the guys that are supposed to use the bloody thing can't. One very interesting thing is that I can connect but I can't ping... not the name nor the IP address. Is there anything that I should be looking in order to make it work? Any ideas are welcome. Thanks heaps in advance, I really appreciate it. Cheers, Fred Kaiser

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  • Hyper-V server 2012 nic teaming setup and virtual switch configuration

    - by Calvin
    I have a server with 2 nics. I installed Hyper-v 2012 server (not windows server 2012, no gui) I am trying to set up load balancing. I have both nics in the same switch currently in trunk mode and no native vlan. I use the new-netlbfoteam command to create a team with both nics, I can then "set-netlbfoteamnic "Nic Team" -vlanid 4" so that its available to me with a DHCP or static address but as soon as I try to create a virtual switch it becomes unresponsive. My guess is that is due to it removing the vlan tagging I setup. if I add-netlbfoteamnic and set it for vlan 4, then set the IP I can ping it from my management computer but I just get an error "an error occurred while attempting to connect to server "xxxxxx" Check that the Virtual Machine Management service is running and that you are authorized to connect to the server."

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  • Question regarding the SELinux type enforcement file

    - by Luke Bibby
    In my SElinux te file, I define two new types called voice_t and data_t which certain directories will be classified in the fc file (/data/ will be of type data_t and /voice/ will be of type voice_t). I would like the one SELinux policy to be used for all servers in my network, but, some servers will log VoIP data and other servers will be used to log IP data. I only want the voice_t type to be defined on some servers and data_t to be defined on the others - is this possible? I have tried using an if statement with a boolean expression, and then defining the type when the condition is true but this does not seem to work (it tells me there is a syntax error at 'type data_t'' or 'type voice_t;'). Example: if (data_logger) { type data_t; } else { type voice_t; } Any help would be greatly appreciated. Cheers, Luke

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  • Cacti dskIndex RHEL

    - by andyh_ky
    I'm attempting to use includeAllDisks in my snmpd.conf for RHEL 4 and RHEL 5 machines, but no data is being returned on the Cacti Data Query. snmpwalk isn't giving me any results. $ snmpwalk -v 2c -c public 172.19.4.140 .1.3.6.1.4.1.2021.9.1.1 UCD-SNMP-MIB::dskIndex = No Such Instance currently exists at this OID If I add disk / to snmpd.conf snmpwalk gives me the right results. $ snmpwalk -v 2c -c public 172.19.4.140 .1.3.6.1.4.1.2021.9.1.1 UCD-SNMP-MIB::dskIndex.1 = INTEGER: 1 I am wanting to deploy this to many systems using the same snmpd.conf (via Satellite). The disk configuration varies among systems and manually configuring snmpd.conf is not an optimal solution. Is there a way to get includeAllDisks to work? My snmpd.conf file: rocommunity public <cacti server IP> dontPrintUnits true includeAllDisks

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  • Intermittent Connection Issues to SQL Server 2008 R2 RTM

    - by Chandan Jha
    The problem I am facing is a very complex one and inspite of trying to gather a root cause of the problem, I am standing at the same place after 2 months with just bits and pieces of information.Here is a scenario: There is a windows 2003 server which uses an system DSN ODBC connection. I looked into the driver properties and it is as follows: Name Version File SQL Server 2000.86.3959.00 SQLSRV32.DLL Now, this system DSN has been given configured with TCP\IP in Network Libraries and 'determine port dynamically' is checked. Now, lets come to the database destination. It is hosted on Windows 2008 having SQL 2008 R2 RTM version 64-bit. Now, I will give you a an overview about the events that happen and whatever troubleshooting I could perform: I get an email saying 'blah blah' failed and the only message their application gets is 'cannot connect to database' I go the SQL Server logs and find the following information: Login failed for user ''. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: 10.0.0.xx Error: 18456, Severity: 14, State: 58.] A quick search shows that this error may come when an SQL Server is configured with windows authentication but its not true. We have mixed mode and connection issue is intermittent. This SQL Server is configured to run on a local system account but since we use only SQL Server accounts to connect to this, there should not be any Kerberos errors. When I run a profiler trace and see only 'existing connections', i see a lot of them coming from my client server displaying the sql user but NO hostname is shown. Textdata field shows TCP\IP information along with some arithabort and ansi-null settings. Now, I tried looking into ring connectivity buffer by using following: SELECTCAST(record AS XML) FROM sys.dm_os_ring_buffers WHERE ring_buffer_type = 'RING_BUFFER_CONNECTIVITY' One sample output is: <ConnectivityTraceRecord> <RecordType>Error</RecordType> <RecordSource>Tds</RecordSource> <Spid>118</Spid> <SniConnectionId>5124905D-D1EC-460E-AD78-201050B78C67</SniConnectionId> <OSError>0</OSError> <SniConsumerError>18452</SniConsumerError> <SniProvider>7</SniProvider> <State>1</State> <RemoteHost>10.0.0.21</RemoteHost> <RemotePort>5008</RemotePort> <LocalHost>10.1.0.38</LocalHost> <LocalPort>1433</LocalPort> <RecordTime>6/6/2012 21:14:57.527</RecordTime> <TdsBuffersInformation> <TdsInputBufferError>0</TdsInputBufferError> <TdsOutputBufferError>0</TdsOutputBufferError> <TdsInputBufferBytes>120</TdsInputBufferBytes> </TdsBuffersInformation> <TdsDisconnectFlags> <PhysicalConnectionIsKilled>0</PhysicalConnectionIsKilled> <DisconnectDueToReadError>0</DisconnectDueToReadError> <NetworkErrorFoundInInputStream>0</NetworkErrorFoundInInputStream> <ErrorFoundBeforeLogin>0</ErrorFoundBeforeLogin> <SessionIsKilled>0</SessionIsKilled> <NormalDisconnect>0</NormalDisconnect> </TdsDisconnectFlags> </ConnectivityTraceRecord> <Stack> <frame id="0">0X000000000174C34B</frame> <frame id="1">0X0000000001748FDD</frame> <frame id="2">0X0000000002461001</frame> <frame id="3">0X0000000000C47E98</frame> <frame id="4">0X00000000008015AD</frame> <frame id="5">0X0000000000801492</frame> <frame id="6">0X00000000003CBBD8</frame> <frame id="7">0X00000000003CB8BA</frame> <frame id="8">0X00000000003CB6FF</frame> <frame id="9">0X00000000008E8FB6</frame> <frame id="10">0X00000000008E9175</frame> <frame id="11">0X00000000008E9839</frame> <frame id="12">0X00000000008E9502</frame> <frame id="13">0X0000000074E437D7</frame> <frame id="14">0X0000000074E43894</frame> <frame id="15">0X00000000775A652D</frame> Somehow all the errors show error number 18452 whereas I never found this error in my SQL logs where I see only 18456. I am just stuck on a dead end because this connection issue appears intermittently. Sorry for a long question but I hope if you read this, you can make out that I tried a lot at my end before giving up.

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  • Centos Virtual host loading default page

    - by ntechi
    I have asked a question which was related to this but not same, I have a centos VPS, which has two wordpress websites, one is mbas.co.in and another is onlinemba123.com, now for virtual hosting using just ONE IP ADDRESS, first I started mbas.co.in, which is working fine, when I added onlinemba123.com then, it is loading default Centos page instead of my website, and I am just testing my onlinemba123 website, I haven't configured DNS for it, I am testing it through editing my PC's hosts file, My website folder names are also same as in the conf file below Now my question is how can I load my website instead of Default page, is my virtual host config fine? My virtual host config: NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html/www.mbas.co.in ServerName mbas.co.in ErrorLog logs/mbas.co.in-error_log CustomLog logs/mbas.co.in-access_log common </VirtualHost> <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html/www.onlinemba123.com ServerName www.onlinemba123.com ErrorLog logs/onlinemba123-error_log CustomLog logs/onlinemba123-access_log common </VirtualHost> My computers host file is: xx.xxx.xxx.xxx www.onlinemba123.com

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  • does ping command to a dns name uses DNS PTR type messages?

    - by TiagoM
    Okay I cant understand this, when I try to ping to a machine on my network using the name associated I get a response from that machine, thats normal.. But there are messages that the sender sends to the top machine (SOA) that I dont understand.. First he sends a type A and gets a response with the IP associated to the name used on the ping command, but after that.. the sender only sends (before each ping) messages of type PTR to the (SOA) Saying this: Standar query 0xf66c PTR 12.45.168.192.in-addr.arpa and SOA respond with: Standard query response 0xf66c No such name And before each ping they do this, I dont know why... I notice this using wireshark, thanks alot again for accept me here, being able to get some answer :)

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  • Does NMBD depend on DHCP?

    - by Atilla Filiz
    I am trying to debug a SMB share issue on an embedded Linux setup. Before diving into source code, I want to make sure this is not a configuration problem. So here is my case: Scenario-1: dhcp server enabled by default 1- system boots 2- udhcpcd server starts 3- smb server starts (smbd) 4- nmb server starts (nmbd) 5- smb share accessible Scenario-2: dhcp server disabled by default 1- system boots 2- smbd starts 3- nmbd fails to start 4- smb share inaccessible 5- $/etc/init.d/udhcpcd start 6- $/usr/sbin/nmbd still fails without an error message The client pc and the server device have static IP addresses in both cases. Is it possible that, NMBD somehow depends on a DHCP server at start?

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  • Virtual Box Pen Test Lab Set Up

    - by hairyjewbear
    So i'm trying to set up a pen test lab in virtual box on my windows 7 host. I have 3 guest OS's installed: 1.) BackTrack5 2.) Centos 5 Server/Snort (My Snortbox) 3.) Win XP (Unpatched) I have 3 Ethernet adapters created IP'S 192.168.191.1 192.168.127.1 192.168.56.1 My goal is to use BackTrack5 to nmap the Win XP guest and have the snort box sniff the network. I'm new to networking and virtualization and I need help setting up my virtual network to get this to work. What should I do? All help appreciated Centos: Adapter1: NAT Adapter2: Host-only Adapter3: Internal Network Backtrack: Adapter1: Internal Network XP: Adapter1: Internal Network Also take for granted I'm on a University Network with a ridiculous firewall so I need to stay all within the host

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  • How to open ports on modem for better torrent performance

    - by Mehper C. Palavuzlar
    I've been using utorrent to download and upload torrents for a long time. Recently someone told me that I need to open port(s) for utorrent from my modem settings for better downloading and uploading performance. Is it true? If yes, how can I do that? My utorrent version: 2.0 and the port used for incoming connections: 61829. My modem: Yaksu S200 ADSL router modem and I can reach its settings via web interface. I looked at the settings but they seem a bit complicated to me. Other info you may need to know: I have dynamic IP. I'm using Win7 x64.

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  • Wireless and Wired Network Access at same time?

    - by grasper
    At work, I use a laptop. It is a Dell Latitude D630 with Windows XP. I work in a lab environment where I need to use the Ethernet Port as a Static IP to interact with a local network (which cannot talk to the outside world). What I would like to do is use the Wireless as the internet connection so i can check email, etc at the same time I am using the ethernet network... It seems like this is not possible. Is there a piece of software or a way to configure it to allow me to do this?

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  • Locate rogue DHCP server

    - by Farseeker
    I know this is a serious long shot, but here we go. In the past week or so, for users connected to a particular switch in our network (there are four dumb switches all connected, and it only affects SOME, not all, users on the one switch) are getting DHCP addresses from a rogue DHCP server. I have physically checked every cable plugged into the switch in question to make sure that none of them have a router or wifi point attached to it. I know the IP of the DHCP server, but I cannot ping it, and it does not have a web interface. Does anyone have any suggestions on what I can do to locate it or shut it down? Unfortuantely all the switches are unmanaged, and as mentioned, there's no physical device (that I can find) plugged in to anything. It's getting critical, because it's screwing up the PXE boot of a whole bunch of thin clients.

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  • Virtualbox two networks slow

    - by Petr Marek
    I am running an Ubuntu server guest on Win 7 guest, and am running a webrick server (RoR dev). If I have just a host-only network, everything works fine and the browser response is instant. However, if I add a second network (NAT), so that the server can connect to the internet (for various updates etc.), the host-to-guest access gets really slow. I can't use the bridge connection. I am using the port 3000 (RoR Webrick server) and connecting to the guest via internet browser on this port (eg http://192.168.56.102:3000). Any idea, what could be causing this? If I ping the IP from host console, I get < 0ms. Here are the settings (relevant info is in english; Povoleno vše is Everything is allowed):

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