Search Results

Search found 29222 results on 1169 pages for 'network security'.

Page 921/1169 | < Previous Page | 917 918 919 920 921 922 923 924 925 926 927 928  | Next Page >

• virtualbox port forwarding - firewall config

  - by Roose

  i have a ubuntu host system with virtualbox running a windows server. In Virtualbox i have configured the network with a NAT interface and port forwarding for the RDP deamon running inside the vm. That works really well - i can connect to the windows rdp service over the internet. TCP *:3389 - *:3389 Now i like to restrict the access to the rdp service to only 3 public ip addresses and have no idea how to do that via iptables / shorewall. Something like: ACCEPT net:91.x.x.x fw tcp 3389 (shorewall rule) isn't working. Would be glad for any hint.

  Read the article

• Only ONE Outlook 2010 installation "Cannot connect to Exchange server" when setting up new profile.

  - by Johnny PDEX

  Exchange 2010, one-server installation (small production, I know not best practice) OWA Connectivity has been confirmed, Autodiscover is configured and working properly for EVERY other installation. Other user accounts tested on problem Outlook, none can connect. Windows Firewall is pre-configured by Group Policy, only modifications being related to remote management. Firewall has also been disabled during diagnostic period. Network discovery and file sharing is enabled on workstation as well. Windows 7 Professional, latest updates installed. Driving me nuts. Help, serverfault?

  Read the article

• Dhcp clients fail after successful import of server to new machine (win2k3)

  - by Tathagata

  I transfered the configs of a dhcp server from one server to another both running Windows Server 2003 R2 following http [://] support.microsoft.com/kb/325473. The new server has a statically configured ip(outside the scope) like the old one. Stopped the server on the old, and started up in the new server (authorized too) - but when I ipconfig /renew from a client its network interface fails with all 0.0.0.0 (or 169...*). I read somewhere I need to reconcile the scope to sync the new registry values ('ll try this tomorrow). What other troubleshooting steps can I take other than these (which didn't help)? Things work fine when the old server resurrects and the new one is taken down. The new server showed there was no requests for offer.

  Read the article

• Have two exchange servers to communicate together

  - by Data-Base

  We have Exchange Server 2007 using our domain ddd.com. We created an isolated network with a firewall/gateway and installed a DC and Exchange Server 2010 using a demo/test domain (ddd.loc). We opened all the needed ports in the firewall (10.10.2.88) to the Exchange Server 2010. In our main Domain Controller (10.10.2.3) we defined the domain ddd.loc with IP 10.10.2.88 (firewalls). We also we defined MX records to the same IP (10.10.2.88) We did that so when we send email from my email [email protected] it will go to the Exchange Server 2010. Anyways, all the pings test from to any servers are OK. But we are not able to send or receive emails. Between these Exchange Servers we can not send any email from the 2010 to any email in general (emails are pending). Also, in Exchange 2007 we are getting error #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##

  Read the article

• how to create a simple radio station [on hold]

  - by John

  I've been digging around for ages but not getting very far so any links or tips would be massively appreciated. I want to create a central "radio station" in my home to stream one playlist to any computers pointing their browser to the ip within my internal network. I have an old mini slave mac mini running ubuntu and was originally thinking I could get php and apache to handle this but then quickly realised that of course, php will serve out streaming independently per connection ie no radio station. Are there any servers already built for this sort of behaviour? is shoutcast one of the only versions Thanks, John

  Read the article

• Debian crashed, file system is read-only and cannot backup - How Do I find/mount a USB drive?

  - by Spiros

  We have a Debian server (vm's) here at work and the server crashed after a power failure. I can only boot the system in maintenance mode, and the whole file system is set to read only. I can run fsck though maintenance mode, however I would like to get a backup of some files before I do. Problem: I cannot access the net since there is no network connectivity in maintenance mode, and for some reason I try to add a USB flash drive to the computer but I can't find it through the console. Question: how to you find/mount a usb drive on Debian? I have tried several resources from the internet but nothing worked. Is there any other way I could get a backup of my files? I cannot start networking since the filesystem is set to read only. Any help would be appreciated.

  Read the article

• JavaOne 2013: (Key) Notes of a conference – State of the Java platform and all the roadmaps by Amis

  - by JuergenKress

  Last week’s JavaOne conference provided insights in the roadmap of the Java platform as well as in the current state of things in the Java community. The close relationship between Oracle and IBM concerning Java, the (continuing) lack of such a relationship with Google, the support from Microsoft for Java applications on its Azure cloud and the vibrant developer community – with over 200 different Java User Groups in many countries of the world. There were no major surprises or stunning announcements. Java EE 7 (release in June) was celebrated, the progress of Java 8 SE explained as well as the progress on Java Embedded and ME. The availability of NetBeans 7.4 RC1 and JDK 8 Early Adopters release as well as the open sourcing of project Avatar probably were the only real news stories. The convergence of JavaFX and Java SE is almost complete; the upcoming alignment of Java SE Embedded and Java ME is the next big consolidation step that will lead to a unified platform where developers can use the same skills, development tools and APIs on EE, SE, SE Embedded and ME development. This means that anything that runs on ME will run on SE (Embedded) and EE – not necessarily the reverse because not all SE APIs are part of the compact profile or the ME environment. However, the trimming down of the SE libraries and the increased capabilities of devices mean that a pretty rich JVM runs on many devices – such as JavaFX 8 on the Raspberry PI. The major theme of the conference was Internet of Things. A world of things that are smart and connected, devices like sensors, cameras and equipment from cars, fridges and television sets to printers, security gates and kiosks that all run Java and are all capable of sending data over local network connections or directly over the internet. The number of devices that has these capabilities is rapidly growing. This means that the number of places where Java programs can help program the behavior of devices is growing too. It also means that the volume of data generated is expanding and that we have to find ways to harvest that data, possibly do a local pre-processing (filter, aggregate) and channel the data to back end systems. Terms typically used are edge devices (small, simple, publishing data), gateways (receiving data from many devices, collecting and consolidating, pre-processing, sending onwards to back end – typically using real time event processing) and enterprise services – receiving the data-turned-information from the gateways to further consolidate, distribute and act upon. A cheap device like the Raspberry PI is a perfect way to get started as a Java developer with what embedded (device) programming means and how interaction with physical input and output takes place. Roadmaps The over all progress on Java is visualized in this overview: Read the full article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Amis,OOW,Oracle OpenWorld,JavaOne,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

  Read the article

• Blogger Blog Takes Ages to Load after Custom Domain Redirection

  - by abhisek

  I recently bought a custom domain for a blogger blog (technabled.com) I have for sometime now. I followed the instructions on blogger's documentation. I added A-name records and CNAME records with my DNS provider. But, now, some strange problems are cropping up. If I connect to my broadband network and then ping technabled.com, it times out. Then, if I visit the webpage, which takes almost one and half minutes to load, and then if I ping technabled.com, it shows expected result. This is not just me. I asked some of the regular readers, who reported the same issue. As a result of this, I am losing a lot of visits. What is stranger is that the subsequent visits to the blog is faster. I have checked with a few online services to test the performance. WebPageTest seems to say the same thing: http://www.webpagetest.org/result/110117_1N_7PE/ (please see the First View / Repeat View time) Also, the pagespeed score is not that bad. So I am ruling out other possibilities. I am at a loss as to what I should do to find a solution. Help is much appreciated. :)

  Read the article

• Bind dns server in Solaris 10 and win xp clients

  - by stevecomptech

  Hi, Added this in zone db file, I am running solaris 10 _ldap._tcp.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.mydomain.com. SRV 0 0 88 dc.mydomain.com. _ldap._tcp.dc._msdcs.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.dc._msdcs.mydomain.com. SRV 0 0 88 host.mydomain.com. Now I get this error when I try to join win xp to the domain The query was for the SRV record for _ldap._tcp.dc._msdcs.mydomain.com The following domain controllers were identified by the query: host.mydomain.com Common causes of this error include: Host (A) records that map the name of the domain controller to its IP addresses are missing or contain incorrect addresses. Domain controllers registered in DNS are not connected to the network or are not running. What do I need to change in order my win xp join the domain

  Read the article

• Standalone server setup for compute capacity

  - by mikera

  I'm developing an application for my company that will require a lot of compute capacity (running some very big mathematical calculations), and looking for some form of server setup to do this. For various reasons, we want to run this on-site in our office rather than hosting it externally. It's been a while since I last had to set up my own servers so I thought I would tap into the collective wisdom of serverfault! My broad requirements are: Budget $30-50k, with an aim to get as much compute capacity as possible for that budget 64-bit servers suitable to run Ubuntu Linux + Java Some relatively standalone rack that can be installed in secure office space Fast/low latency network connections between the servers, but don't really care about connectivity to the outside world Storage capacity shared between the servers - they don't necessarily need their own storage providing they can be booted from a common image Downtime can be tolerated (since the calculations are run in batch mode) The software itself is fault-tolerant, so there is no need for extra resiliency in the server setup (cheap replaceable commodity parts will be fine in general) Given these requirements what kind of setup would you recommend and why?

  Read the article

• When RDP as a Domain User, Smart Card Requested

  - by Paul

  My W8 machine is connected to domain zen. If I rdp to the W8 machine, I can log in as a local user without problems. If I try to log in as a domain user, I am prompted for a smart card instead of a password. Any ideas why? Note that Interactive login: require smart card is disabled in group policy: And here is the output from rsop.msc: Some additional information on this one. If my connecting machine is on the same domain/network as the W8 machine, then I am prompted for a password as usual. If the machine is remote, on a different domain, then I am prompted for a smart card. In addition, the machine I am connecting from that gets the smartcard prompt is an XP box. I haven't isolated exactly which of these factors triggers the different response.

  Read the article

• Does there exist video chat software which works over a LAN between different types of devices?

  - by Graphics Noob

  What I'm trying to do is set up a local area network, without internet access, which allows the users to video chat with each other. The connected devices will include Linux and Android devices, so software which will run with just those two types of systems will work, although running through a browser would be optimal. The most promising lead I've found so far is camfrog, which has a video-chat app for android and a video chat server for linux. The problem is that the documentation for the server is non-existant, and I don't know if the android app can directly connect to the video chat server over a LAN or if it can only connect to camfrog's video chat server over the internet.

  Read the article

• How do you explain ethernet cable problems to non networking people?

  - by Bryan McLemore

  We've recently been doing a large network migration in our datacenter. We've had a few cables in this start to deliver really bad pings (in excess of 500ms on a LAN) before they could be replaced. The cables we were replacing weren't made the best. They where all hand made and the runs were so short on some of them that the bend radius was definitely too tight. Some of them ran in bundles right in front of the heat exhaust of the power supplies. The cables were running ok until we started pulling the ones surrounding them out. Then a few started having the problem I mentioned above degrading performance and causing reliability issues. I'm trying to figure out the best way to explain this to non networking people. Is there any documentation that people could recommend or other methods?

  Read the article

• Deactivate SYN flooding mechanism

  - by mlaug

  I am running a server that is running a service on port 59380. There are more than 1000 machines out there connecting to that service. Once I need to restart the service all those machines are connecting at the same time. That made some trouble as I have seen that log entry in kern.log TCP: Possible SYN flooding on port 59380. *Sending cookies*. Check SNMP counters. So I changed sysctl net.ipv4.tcp_syncookies to 0 because the endpoints to not handle tcp syn cookies correctly. Finally I restarted my network to get the changes in production Next time I had to restart the service, the following message was logged TCP: Possible SYN flooding on port 59380. *Dropping request*. Check SNMP counters. How can I prevent the system for doing such actions? All necessary counter measures are done by iptables...

  Read the article

• Prevent folder deletes at top level only on Server 2008

  - by DomoDomo

  I'm trying to prevent folders moves, really folder delete in NTFS parlance, for series of folders within a network share. So let's say I have: FolderA, FolderB, FolderC. Each folder has various files and subfolders. I want the Domain Users group to have modify access to all files and folders beneath FolderA, FolderB, and FolderC. However I don't want them to be able to delete these three top level folders. The issue we are having right now is people keep accidentally dragging one top level folder into another. I've tried used advanced NTFS permissions to deny domain users delete access to these top level folders, and set the permissions to apply to "This folder only", however it seems to only affect sub-folders, and not the top level. Platform is Server 2008 Standard. Thanks in advance.

  Read the article

• Multiple SMTP servers in Thunderbird3

  - by ldigas

  Situation: 2 mail accounts - each with its own pop3 and smtp servers, accesed normally. Except, when using Vodafone mobile network (you know, those usb or pcmcia cards ...) in which case mails are send using Vodafone's SMTP server. I configured both accounts in thunderbird for their default servers, and then added under multiple identities, another called Name of User (mobile) for each account. And it works. Except, I don't like the fact that when I send mail using mobile smtp server it sends them under Name of User (mobile) <-- the mobile part being important. I could of course, delete that part, but then when sending mail, I'd have no way of differenting between the two. They'd both look as Name of User email@address_of_user.com. So, what would be the easiest way to solve this ? It is not a major problem, but it is annoying.

  Read the article

• Ubuntu from console/command-line/shell

  - by Xolve

  Earlies linux distros though required lot of manual work they were quite good to use from commandline. If the X-server didn't start or you just want a shell to work they all supported. Network was configured by init; sound was up and ready; new devices inserted would be configured and their configureation was placed in fstab. Also there were small scripts I found on many distros which on X used windows while on console they switched to ncurses. But now this all needs GUI with a desktop manager (KDE, GNOME) for the new paradigms :'-( require GUI (NetworkManger, hal etc.). So if on just command line you have to be root, looks like they believe only geeky admins need that, and need to edit config files or type big commands. Any way so that this is easy in Ubnubtu through shell again.

  Read the article

• Windows 8.1 update effectively disabled mobile broadband connection

  - by natarajan

  I have Windows 8.1 on my HP laptop and a Huawei broadband modem which was working fine but since some of the updates of Windows 8.1 it is now not working. I have following issue: Under Device Manager Network Adaptor it shows the Hauwei mobile E303H but when I click on it and go to the Driver tab I can see that no device driver is installed. When I click to update the driver and select the generic mobile broadband adaptor it fails and shows "access denied". How do I go about replacing the driver for this?

  Read the article

• Two routers, one off-site, same ISP-assigned static IP. A recipe for conflict?

  - by boost

  This is the situation I've inherited: There are two routers, one off-site. Both are connected to the ISP. The ISP assigns both of them the same static IP (or so it seems). Presumably, the network problems we're having are related to the idea that you can't have two instances of the same IP. So we rang up the folk off-site and told them to turn off the router. Now everything's working okay here. How do I get around this? Get another static IP? Figure out how to get the router to ask for a dynamic IP (as we're not using the static IP for anything)?

  Read the article

• Use HAProxy or Nginx to Load Balance between VPS

  - by xperator

  I want to load balance + failover backup multiple vps webservers hosted on different providers. I heard that for HAProxy you need multiple server under the same subnet, plus a shared (virtual) ip address between load balancers. But it's not possible in my case cause every VPS is on different node/network. Is there a way to use HAProxy in this kind of setup ? ( Please explain how briefly, I don't want to hear your "YES" answer ) What about NginX? Is it possible to achieve same result with Nginx ? (when servers are located on different nets) I know about Round Rubin DNS, but it doesn't provide a real failover solution, neither a load balance between servers.

  Read the article

• Is there a way to force/manage file locking in windows?

  - by JPbuntu

  I have a 2 Windows machines networked and I am having trouble with simultaneous access to files. I would like only one user to be able to open a file at a time, which I thought was automatic, using file locks.... if the program used to access the file is locking the file. I believe the problem I am having is some of the programs I use, don't lock the file, and there for can be modified simultaneously by multiple users, which is very much not desired. Currently I am having this problem with only two computers, although as soon as I can figure out a solution to this problem the network is going to be expanded to 6 computers, which will include Windows 7, Vista, and XP, as well as a central file server (Samba). Is there a way to ensure that all files opened in windows get locked? Any suggestions are appreciated, thanks.

  Read the article

• What can impact the throughput rate at tcp or Os level?

  - by Jimm

  I am facing a problem, where running the same application on different servers, yields unexpected performance results. For example, running the application on a particular faster server (faster cpu, more memory), with no load, yields slower performance than running on a less powerful server on the same network. I am suspecting that either OS or TCP is causing the slowness on the faster server. I cannot use IPerf , unless i modify it, because the "performance" in my application is defined as Component A sends a message to Component B. Component B sends an ACK to component A and ONLY then Component A would send the next message. So it is different from what IPerf does, which to my knowledge, simply tries to push as many messages as possible. Is there a tool that can look at OS and TCP configuration and suggest the cause of slowness?

  Read the article

• How do I get the machine name from an IP via Multicast DNS?

  - by Adam

  I have a list of IP addresses on a network, and most of them support multicast DNS. I'd like to be able to resolve the server name instead of just having the IP address. ping computer.local 64 bytes from 192.168.0.52: icmp_seq=1 ttl=64 time=5.510 ms 64 bytes from 192.168.0.52: icmp_seq=2 ttl=64 time=5.396 ms 64 bytes from 192.168.0.52: icmp_seq=3 ttl=64 time=5.273 ms Works, but I'd like to be able to determine that name from the IP. Also the devices don't necessarily broadcast any services, but definitely do support mDNS broadcast. So looking through services won't work.

  Read the article

• Lost support for Web Access on Verizon BlackBerry World Edition

  - by Jimsmithkka

  Hello all, I believe that some silliness has occurred with my blackberry after a OS upgrade. I have 2010 Blackberry world edition phone, purchased off a friend who went iPhone, that at first worked with web on the Verizon network. When i connected it to my PC to transfer contacts, it prompted for an OS upgrade, which I performed. Post-Upgrade I have found that i can no longer access any of the web services: eg. AppWorld, Email, Twitter, Browser. And they all state that i need to upgrade my account to gain access. I had a Storm previous to this that worked fine, and at the VZ store they told me this device is no longer supported (new in 2010 though), and they got me a free "upgrade" to the Blackberry flip. What i could use help with is finding a source stating it is discontinued or a guide that will help me re-enable the web features. I can provide further info later if needed (currently at work with the flip, the WorldEdition is at home).

  Read the article

• Business Forces: SOA Adoption

  The only constant in today’s business environment is change. Businesses that continuously foresee change and adapt quickly will gain market share and increased growth. In our ever growing global business environment change is driven by data in regards to collecting, maintaining, verifying and distributing data.  Companies today are made and broken over data. Would anyone still use Google if they did not have one of the most accurate search indexes on the internet? No, because their value is in their data and the quality of their data. Due to the increasing focus on data, companies have been adopting new methodologies for gaining more control over their data while attempting to reduce the costs of maintaining it. In addition, companies are also trying to reduce the time it takes to analyze data in regards to various market forces to foresee changes prior to them actually occurring.   Benefits of Adopting SOA Services can be maintained separately from other services and applications so that a change in one service will only affect itself and client services or applications. The advent of services allows for system functionality to be distributed across a network or multiple networks. The costs associated with maintain business functionality is much higher in standard application development over SOA due to the fact that one Services can be maintained and shared to other applications instead of multiple instances of business functionality being duplicated via hard coding in to several applications. When multiple applications use a single service for a specific business function then the all of the data being processed will be consistent in terms of quality and accuracy through the applications. Disadvantages of Adopting SOA Increased initial costs and timelines are associated with SOA due to the fact that services need to be created as well as applications need to be modified to call the services In order for an SOA project to be successful the project must obtain company and management support in order to gain the proper exposure, funding, and attention. If SOA is new to a company they must also support the proper training in order for the project to be designed, and implemented correctly. References: Tews, R. (2007). Beyond IT: Exploring the Business Value of SOA. SOA Magazine Issue XI.

  Read the article

< Previous Page | 917 918 919 920 921 922 923 924 925 926 927 928  | Next Page >