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  • BIND DNS server (Windows) - Unable to access my local domain from other computers on LAN

    - by Ricardo Saraiva
    I have a BIND DNS server running on my Windows 7 development machine and I'm serving pages with WAMPSERVER. My ideia is to develop some tools (in PHP) for my intranet at work and I want them to be accessible via LAN in this format: http://tools.mycompany.com I've already placed BIND and I can access http://tools.mycompany.com on the machine that holds BIND server, but I cannot access it from other LAN computers. I've done the following on my router: defined static IP's for all LAN computers set Port Forwarding to my server (remember: it serves DNS and Web pages) set DNS server configuration to point to my LAN server On LAN computers, I went to Local Area Network properties and also changed the DNS server IP in order to point to my local DNS server. If it helps, here is my named.conf file: options { directory "c:\windows\SysWOW64\dns\etc"; forwarders {127.0.0.1; 8.8.8.8; 8.8.4.4;}; pid-file "run\named.pid"; allow-transfer { none; }; recursion no; }; logging{ channel my_log{ file "log\named.log" versions 3 size 2m; severity info; print-time yes; print-severity yes; print-category yes; }; category default{ my_log; }; }; zone "mycompany.com" IN { type master; file "zones\db.mycompany.com.txt"; allow-transfer { none; }; }; key "rndc-key" { algorithm hmac-md5; secret "qfApxn0NxXiaacFHpI86Rg=="; }; controls { inet 127.0.0.1 port 953 allow { 127.0.0.1; } keys { "rndc-key"; }; }; ...and a single zone I've defined - file db.mycompany.com.txt: $TTL 6h @ IN SOA tools.mycompany.com. hostmaster.mycompany.com. ( 2014042601 10800 3600 604800 86400 ) @ NS tools.mycompany.com. tools IN A 192.168.1.4 www IN A 192.168.1.4 On the file above 192.168.1.4 is the IP of the local machine inside my LAN. Can someone help me here? I need my web pages to be accessible from other computers inside my LAN using my custom domain name. I've tried on other computers and they can access my server via http://192.168.1.4/, but no able when using http://tools.mycompany.com . Please, consider the following: I'm completely new to BIND I have basic knowledge in Apache configuration Thanks a lot for your help.

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  • why udp client work when wirshark capture?

    - by herzl shemuelian
    I have two machine A,B windows 7 os .I connect them end to end and try run a performance test by using tcpreplay. step 1) I check conectivity between to point by netcat In A i run nc -lvup 5432 when I run on B nc -u 1.2.3.4 5432 I can send data from B to A step 2) when in I run tcpreplay in B tcpreplay -i %0 myudp.pcap in A I don't recevice any data . when I open wireshark in A then my nc can read data why? I check dst mac and dst ip in pcap file they are correct. is importan udp src mac or src ip for udp how that I open udp server ?

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  • Troubleshoot telnet connection from Windows 7 to UNIX

    - by Sujay Ghosh
    I am trying to connect to an Asterisk server in USA. I am using telnet < IP Address 5038 from India to USA. The person in USA is able to telnet to the IP address and port from USA , but I am not able to do it from India. We are on different networks. I am using Windows 7 Ultimate, and have enabled the Telnet client. I have also used Putty without any success. Can someone suggest me what can be the problem and how can this be resolved.

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  • SSH command from PHP script - nothing, yet work at cmd line

    - by waxical
    I'm working on an EC2 box and trying to SSH command another box. The command works in command-line, even php -a interactive. However it does not work when running as apache. Example cmd:- system('ssh -i /home/me/keys/key.pem user@ip-xx-xxx-xxx-xxx-end.ip "ls"'); I've tried adding apache to wheel group, and gshadow on both boxes. I've also just tried chowning the pem file to apache. Nothing. Yet the command response fine in the two other use cases outlines. What's going on here? Anyone know?

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  • Prevent users from Router 2 seeing Router 1 computers

    - by Patrick Robert Shea O'Connor
    I've got 2 Netgear N300 (WNR2000v3) routers. Here's my setup: Modem Router 1 Private Users/Router 2 Public Wireless Users on "Guest" Network. I want to prevent users who are connected to Router 2's "Guest" network from accessing anything that is connected to Router 1. There is an option when setting up the "Guest" network called "Allow guest to access My Local Network" which I thought if unchecked would do this very thing; however, I can still access files and such of computers connected to Router 1. Router 1 assigns 192.0.0.x IP addresses, Router 2 assigns 10.0.0.x IP addresses, how can they even see each other? Do I need to change the subnet or something else?

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  • I want to start my portfolio site using ASP.Net and I'm a bit lost about hwo to actually put it on t

    - by Papuccino1
    I found this site: www.discountasp.net They seem cheap enough and have a track record. I decided to host my site with them. Here's where I'm confused. I host the application (my website) with them and they give me an IP address, right? Users can visit my site by typing in that IP address right? (Of course once I move the index file and create a defauly web folder, etc.) Next step is buying a domain name right? Like www.mysite.com, right? Is this the way it's done, or am I doing it wrong?

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  • OpenVPN multiple servers on the same subnet, high availability

    - by andre
    Hey everyone. Let me start by saying that my Linux experience isn't super awesome but I can usually find my way around things easily. Over at work we have an OpenVPN setup that's been due for some improvement for a while now. The main server (tap mode) runs in our office, behind a rather slow DSL connection. The main problem is that, since I'm usually out of the office, every time I want to access something on the virtual network I have to go through that server to get anywhere else. We have two servers up on 100 Mbit connections that we use for development and production purposes, about 3 more servers in the office (one of them behind a different T1 line for VOIP) and about two dozen clients who use the network on a daily basis from various locations. We've had situations where network routing (outside of our control) would not allow people to reach our main OpenVPN server whilst the other locations were connectable. Also any time someone outside the office wants to fetch something from any of the servers (say, a 500 MB code repository), a whopping 20 KB/s download speed is just unacceptable these days (did I mention slow DSL? ok). We had to implement traffic shaping on this server since maxing out this connection was fairly trivial. I had the thought of running two (or more) OpenVPN servers in the network. These would have to have the same subnet though, as our application relies on virtual network's IP addresses for some of its core functionality. The clients would also preferably retain the same IP addresses but that's not vital. For simplicity, lets call the current server office and the second server I'm setting up, cloud. Call the server on the T1 phone. This proved to be rather complex because as soon as I connect to cloud, I cannot see office. Any routes to a server that would go through office also do not work while I'm connected to cloud (no ping, nothing) and vice-versa. There's no rules for iptables that would be blocking the traffic either. Recently I came across this article on linuxjournal but the solution they provide seems to only cover the use of two servers and somewhat outdated (can't even find much documentation, their wiki is offline). They also state that adding more servers would be a complex task. Ideally I would like to keep the existing server office running the virtual network and also run the OpenVPN daemon on the cloud and phone servers (100 Mbit and very reliable connection, respectively) so that we're on safe ground in case of a hardware failure, DSL failure, etc. So, in essence, I'm looking for a highly available OpenVPN solution (fix, patch, hack, tweak, whatever you want to call it) that will accept connections on multiple hosts (2 or more) whilst keeping the same IP address subnet regardless of the server to which you connect to. Thanks for reading and sorry for the long post, I hope it gets the point across :P

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  • How to configure Amazon Security Groups to achieve multi-tier architecture?

    - by ks78
    What is the preferred way to configure Amazon Security Groups to achieve a multi-tier architecture? Each of my instances has its own Security Group, which I only want to use for rules specific to an instance. I'd like to keep any rules which apply to multiple instances in a separate Security Group, which can then be assigned to instance Security Groups as necessary. As an example, I've setup a group called "admin", which allows administrative access from my IP. I added the "admin" group as the source to each of my instance security groups. However, I still can't access the instances from my IP without adding the rules directly to the instance's group. Am I missing something? Although it seems a multi-tier security architecture should be possible, it doesn't seem to be working.

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  • How can I stop Windows DNS server properties settings from changing by themselves?

    - by paradroid
    When I open the DNS console in Administrative tools, I keep finding a couple of problems which keep on reappearing by themselves, and I want to stop them from happening. One of the DNS servers has two network interfaces, and it should only be listening for requests on of them, and I get errors in the Event Log otherwise. But when right clicking one DNS server and selecting Properties, I can see on the Interfaces tab that 'All IP addresses' is selected. If I Change it to 'Only the following IP addresses:' and deleselect the WAN addess, I will find it reslected when I next check it after a couple of days. In the other DNS server's Properties, on the Forwarders tab, there should only be two forwarder addresses. However, the address for the router keeps in appearing. This router has the DNS server as its forwarder. There shouldn't be anything using the router's DNS forwarders for DNS other than the router itself, but this surely is causing a loop. How do I get these properties on both DNS servers to stick?

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  • Grant account write access to specific attributes on Active Directory User object

    - by Patricker
    I am trying to allow an account to update very specific attributes on all User objects. I am setting this security on the "User" object. When I add the account on the security tab, go to advanced, edit the accounts permissions, and start going through the list of attributes I am only able to find a few, like First Name, but most of the attributes I want to let them write to are missing. How can I grant the account write access to these attributes? Attributes I need to grant permission for: First Name (givenName) Last Name (sn) Initials (initials) Department (department) Company (company) Title (title) Manager (manager) Location Info (physicalDeliveryOfficeName, streetAddress, postOfficeBox) Work Phone (telephoneNumber) Pager (pager) IP Phone (ipPhone) IP Phone Other (otherIpPhone) ThumbnailLogo (thumbnailLogo) jpegPhoto (jpegPhoto) Description (displayName) Thanks

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  • ASP.NET MVC hosting recommendations

    - by chris
    I'm looking for recommendations for hosting an asp.net MVC application. Obviously, we need to be able to have access to configure IIS directly - I'd prefer not to have to go thru a control panel. The web server needs to have a dedicated IP, since some clients will be accessing it via IP. We need at least a SQLServer 2005 database, ideally on the same box. Load and usage will be pretty low, so a virtual machine will probably be fine. Does any one have any recommendations that meet the above constraints?

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  • Connect ADSL modem SMC7904WBRA-N to CISCO RV082

    - by Cy.
    I have a SMC7904WBRA-N ADSL modem/router that connects to the internet with a static IP given by the provider. I've received a RV082 to create a VPN connection which is having problems to connect to the remote VPN Server. After many tries we deduced that the SMC7904WBRA-N is being problematic with the NAT and I have been suggested to put the SMC router into the appropriate DSL bridging mode so the RV082 gets direct access to internet with the static IP. Can you give me any hints on how could this be done? Which mode is that?

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  • impossible to connect.. days trying..

    - by dany
    I have a problem: I am on Debian. I configured my nic with a static ip (192.168.1.56). When I try to connect to a network, initially with ifconfig eth2 I get (correctly): eth2 inet addr:192.168.1.56 .... inet6 addr: fe80:221:ff:fe96:4598/64 but after a few seconds the 102.168.1.56 disappears and after some other seconds disappears the inet6 address too. When I press in the nm-applet it requires me the password but in the meantime it try to connect. At uni, the connection is a DHCP one. It works for the first few seconds but after it doesn't. Any possible solution? Here it is the relevant part of the syslog: (static ip configuration) http://pastebin.com/u3BPAsda

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  • Setup IIS 7 as FTP Server that is connectable outside of my local network

    - by Usta
    I was able to setup an FTP site that I was able to access via ftp://127.0.0.1/ or my local(static) ip. To do this I followed these instructions (with the exception that I did not bind to 127.0.0.1 as suggested) http://learn.iis.net/page.aspx/301/creating-a-new-ftp-site-in-iis-7/ I have created a firewall exception for port 20 and 21, and setup port-forwarding on my wireless router. But I can only access the site via local-host, and I need to have a friend have read access to it. So how do I enable remote access to it? (I'd rather not purchase a domain-name) My setup: IIS 7.5 Windows 7 Professional Wireless Network Norton Internet Security 2012 An Internal Static IP Address

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  • Routing Essentials

    - by zharvey
    I'm a programmer trying to fill a big hole in my understanding of networking basics. I've been reading a good book (Networking Bible by Sosinki) but I have been finding that there is a lot of "assumed" information contained, where terms/concepts are thrown at the reader without a proper introduction to them. I understand that a "route" is a path through a network. But I am struggling with visualizing some routing-based concepts. Namely: How do routes actually manifest themselves in the hardware? Are they just a list of IP addresses that get computed at the network layer, and then executed by the transport? What kind of data exists in a so-caleld routing table? Is a routing-table just the mechanism for holding these lists of IP address (read above)? What are the performance pros/cons for having a static route, as opposed to a dynamic route?

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  • Hiding a HTTP Auth-Realm by sending 404 to non-known IPs?

    - by zhenech
    I have an Apache (2.2) serving a web-app on example.com. That web-app has a debug-page reachable via example.com/debug. /debug is currently protected with a HTTP basic auth. As there is only a very small user-base who has access to the debug-page, I would like to hide it based on IP address and return 404 to clients not accessing from our VPN. Serving a 404 based on IP-address only is easy and is described in http://serverfault.com/a/13071. But as soon I add authentication, the users see a 401 instead of a 404. Basically, what I need is: if ($REMOTE_ADDR ~ 10.11.12.*): do_basic_auth (aka return 401) else: return 404

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  • Assisting a user using VNC

    - by wizlog
    I'm trying to help a friend with their computer remotely. He has a version of VNC, I'm not sure which one, so I downloaded and installed the VNC Viewer and Listening Viewer. I ask my friend for his IP address and port number, and he tells me that every time he's used it, the person giving him assistance (remotely controlling his computer) gave him some kind of number. I should note that my friend is not tech savy, and it may have been an IP address, but I'm not sure. What kind of number would the user be looking for? Does this indicate his version of VNC, Does that even matter? I am completly forign to VNC and don't know where to begin looking for an answer myself, and (for whatever reason) I can't ask my friend to figure out what version of VNC he is using.

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  • Airport Express configuration

    - by Christina
    We are trying to set up remote access to a computer that houses a server fro a particular program we are running. The program says we need to configure the office router. In the firewall settings it says to open ports 5345-5351 (TCP only). Port Forwarding: You will also need to forward the same range of ports (5345-5351) to the computer running the Server. This typically requires that the computer running the Server be assigned a static IP on the local network. Having trouble figuring out which IP address we actually need to be using on the client side of this program in order to access the server computer. Can someone walk through this process?? We are working on Mac OSX 10.5. Thank you in advance!

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  • Why can't I connect to remote Microsoft SQL Server through SSH tunnel?

    - by Alexander
    I have at home a D-Link DIR-615 C1 router with DD-WRT. I set up the SSH server on the router, and log on through an SSH2-RSA passphrase-protected key. That router is the gateway between the local network and the internet. One of the computers on that network has Microsoft SQL Server 2008 installed, with TCP/IP protocol enabled through port 1433. I've set up port forwarding on the router, so that remote connections are possible and are, in fact, working (some developers log on remotely without problems). I am part of another network, that has internet access through a proxy server, which only has ports 80 and 443 opened. I can't connect to that MSSQL server on that remote server because 1433 port is closed on this network. I connected (using Putty) through 443 port to my router's SSH server, and set up 2 tunnels. One is for RDP (3389), and it's working. The other is for 1433 port, to connect to the server. I can't connect through the SSH tunnel to the MS SQL Server, neither through telnet, or through GUI clients. Am I missing something? Additional details: on connect, I get this error from SQL Server Management Studio: TITLE: Connect to Server Cannot connect to localhost:14330. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 3) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=3&LinkId=20476 BUTTONS: OK The tunnel is configured like this: L14330 192.168.0.103:1433 192.168.0.103 is the permanent address of the SQL Server on the LAN. I also successfully forwarded TCP traffic of 3389 port to that IP, so tunneling is working to that IP address. When connecting without tunnel, through Microsoft SQL Server Management Studio, using the same method the connection establishes. Too bad my proxy doesn't allow 1433 port traffic, I wouldn't have this headache.

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  • Lustre - issues with simple setup

    - by ethrbunny
    Issue: I'm trying to assess the (possible) use of Lustre for our group. To this end I've been trying to create a simple system to explore the nuances. I can't seem to get past the 'llmount.sh' test with any degree of success. What I've done: Each system (throwaway PCs with 70Gb HD, 2Gb RAM) is formatted with CentOS 6.2. I then update everything and install the Lustre kernel from downloads.whamcloud.com and add on the various (appropriate) lustre and e2fs RPM files. Systems are rebooted and tested with 'llmount.sh' (and then cleared with 'llmountcleanup.sh'). All is well to this point. First I create an MDS/MDT system via: /usr/sbin/mkfs.lustre --mgs --mdt --fsname=lustre --device-size=200000 --param sys.timeout=20 --mountfsoptions=errors=remount-ro,user_xattr,acl --param lov.stripesize=1048576 --param lov.stripecount=0 --param mdt.identity_upcall=/usr/sbin/l_getidentity --backfstype ldiskfs --reformat /tmp/lustre-mdt1 and then mkdir -p /mnt/mds1 mount -t lustre -o loop,user_xattr,acl /tmp/lustre-mdt1 /mnt/mds1 Next I take 3 systems and create a 2Gb loop mount via: /usr/sbin/mkfs.lustre --ost --fsname=lustre --device-size=200000 --param sys.timeout=20 --mgsnode=lustre_MDS0@tcp --backfstype ldiskfs --reformat /tmp/lustre-ost1 mkdir -p /mnt/ost1 mount -t lustre -o loop /tmp/lustre-ost1 /mnt/ost1 The logs on the MDT box show the OSS boxes connecting up. All appears ok. Last I create a client and attach to the MDT box: mkdir -p /mnt/lustre mount -t lustre -o user_xattr,acl,flock luster_MDS0@tcp:/lustre /mnt/lustre Again, the log on the MDT box shows the client connection. Appears to be successful. Here's where the issues (appear to) start. If I do a 'df -h' on the client it hangs after showing the system drives. If I attempt to create files (via 'dd') on the lustre mount the session hangs and the job can't be killed. Rebooting the client is the only solution. If I do a 'lctl dl' from the client it shows that only 2/3 OST boxes are found and 'UP'. [root@lfsclient0 etc]# lctl dl 0 UP mgc MGC10.127.24.42@tcp 282d249f-fcb2-b90f-8c4e-2f1415485410 5 1 UP lov lustre-clilov-ffff880037e4d400 00fc176e-3156-0490-44e1-da911be9f9df 4 2 UP lmv lustre-clilmv-ffff880037e4d400 00fc176e-3156-0490-44e1-da911be9f9df 4 3 UP mdc lustre-MDT0000-mdc-ffff880037e4d400 00fc176e-3156-0490-44e1-da911be9f9df 5 4 UP osc lustre-OST0000-osc-ffff880037e4d400 00fc176e-3156-0490-44e1-da911be9f9df 5 5 UP osc lustre-OST0003-osc-ffff880037e4d400 00fc176e-3156-0490-44e1-da911be9f9df 5 Doing a 'lfs df' from the client shows: [root@lfsclient0 etc]# lfs df UUID 1K-blocks Used Available Use% Mounted on lustre-MDT0000_UUID 149944 16900 123044 12% /mnt/lustre[MDT:0] OST0000 : inactive device OST0001 : Resource temporarily unavailable OST0002 : Resource temporarily unavailable lustre-OST0003_UUID 187464 24764 152636 14% /mnt/lustre[OST:3] filesystem summary: 187464 24764 152636 14% /mnt/lustre Given that each OSS box has a 2Gb (loop) mount I would expect to see this reflected in available size. There are no errors on the MDS/MDT box to indicate that multiple OSS/OST boxes have been lost. EDIT: each system has all other systems defined in /etc/hosts and entries in iptables to provide access. SO: I'm clearly making several mistakes. Any pointers as to where to start correcting them?

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  • How do you set up DNS in Window Server 2008 in a Hyper-V environment?

    - by Nathan DeWitt
    I have a laptop running Server 2008 and Hyper-V. I have created a virtual machine that is also running Server 2008, that I used dcpromo to create as a domain controller. I disabled IPv6 because I had no idea how to enter a default address, and I just wanted to make a standalone MOSS dev environment. I have tried every combination of creating a virtual network on the host and then connecting to that in the VM, but I can't get the VM to communicate with the host and vice versa. No pinging, no copy and paste, nothing. Thanks. To update: My VM (which is its own DC) currently does not have a static IP. When I set the IP to static, I could not find anything that would let it talk to the host machine.

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  • Set nginx.conf to deny all connections except to certain files or directories

    - by Ben
    I am trying to set up Nginx so that all connections to my numeric ip are denied, with the exception of a few arbitrary directories and files. So if someone goes to my IP, they are allowed to access the index.php file, and the phpmyadmin directory for example, but should they try to access any other directories, they will be denied. This is my server block from nginx.conf: server { listen 80; server_name localhost; location / { root html; index index.html index.htm index.php; } location ~ \.php$ { root html; fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /srv/http/nginx/$fastcgi_script_name; include fastcgi_params; } } How would I proceed? Thanks very much!

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  • Should I quit using Ifconfig?

    - by Zhen
    With the servers that mount Infiniband cards, when I use the ifconfig command I have the warning: Ifconfig uses the ioctl access method to get the full address information, which limits hardware addresses to 8 bytes. Because Infiniband address has 20 bytes, only the first 8 bytes are displayed correctly. Ifconfig is obsolete! For replacement check ip. Should I quit using ifconfig? It is deprecated in favor of ip command? Or it will be update in the near future.

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  • Secure copying (file transfer) between two Linux servers in the same datacenter (Linode)

    - by MountainX
    I have two Linodes in the same data center. I want to copy files from one to the other each night or on demand (for about the next month, until this project is finished). So I'm thinking about using rsync. My question is how do I set up the two Linode servers to communicate via private IP addresses securely? Both servers are SSH hardened, they use denyhosts and have a fairly restrictive iptables setup. I know I need to first assign private IP addresses to each server, then configure static networking according to this guide. What is next? What SSH or iptables settings are needed to allow these two servers to communicate? What further info do I need to supply in this question? I'm looking for a basic step-by-step guide for how to do this.

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