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Search found 1080 results on 44 pages for 'connectivity'.

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• Complete Public Folder Migration from Exchange 2007 to Exchange 2010

  - by Michael Todd

  We were in the process of migrating from Exchange 2007 to Exchange 2010 and hit a brick wall when trying to migrate Public Folders. After resolving issues with connectivity (and another issue with an old Exchange 2003 server being listed in AD that was causing the replication to fail) it finally appeared that messages were migrating from one server to another. However, we appear to have jumped the gun and ran MoveAllReplicas before the process was complete. We are now stuck with about 210MB of public folders on the new server from a 7GB public folder store on the old server. The messages appear to be available on the old server since running get-publicfolderstatistics shows that there are messages available. We have waited several days for the move to continue but we are stuck at 210MB. Is there something we can do to complete the replication so that all of the messages move from the old server to the new server?

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• Blocking ports on the public IP assigned to lo interface in GNU/Linux

  - by nixnotwin

  I have setup my Ubuntu server as a router and webserver by following the answer given here. My ISP facing interface eth0 has a private 172.16.x.x/30 ip and my lo interface has a public IP as mentioned in the answer to the question linked above. The setup is working well. The only snag I have experienced is that I could not find a way to block the ports exposed by the public IP on the lo interface. I tried doing iptables -A INPUT -i eth0 -j DROP, and my server lost connectivity to the public network (internet). I could not ping any public ips. What I want is a way to block ports that are exposed by the public ip on the lo interface. And also I require iptables rules that can expose ports like 80 or openvpn port to the public network.

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• Do I need a VPN to secure communication over a T1 line?

  - by Seth

  I have a dedicated T1 line that runs between my office and my data center. Both ends have public IP addresses. On both ends, we have a T1 routers which connect to SonicWall firewalls. The SonicWalls do a site-to-site VPN and handle the network translation, so the computers on the office network (10.0.100.x) can access the servers in the rack (10.0.103.x). So the question: can I just add a static route to the SonicWalls so each network can access each other with out the VPN? Are there security problems (such as, someone else adding the appropriate static route and being able to access either the office or the datacenter)? Is there another / better way to do it? The reason I'm looking at this is because the T1 is already a pretty small pipe, and having the VPN overhead makes connectivity really slow.

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• SonicWall HA "gotchas"?

  - by Mark Henderson

  We're looking to move away from PFSense and CARP to a pair of SonicWall NSA 24001 configured in Active/Passive for High Availability. I've never dealt with SonicWall before, so is there anything I should know that their sales guy won't tell me? I'm aware that they had an issue with a lot of their devices shutting down connectivity because of a licensing fault, and they have an overtly complex management GUI (on the older devices at least), but are there any other big "gotchas" that I need to be aware of before committing a not insubstantial amount of money towards these devices? 1If you're outside the US, the SonicWall global sites suck balls. Use the US site for all your product research, and then use your local site when you're after local information.

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• IPv6 6to4 on Windows Server

  - by Graham Wager

  I'm looking for a relatively simple guide to setting up IPv6 properly on a home network. This network currently has a server (Windows Server 2008R2) running RRAS that establishes connectivity to the internet using a demand-dial PPPoE connection and handles the NAT. It also hosts a DNS server and DHCP. My ISP does not support IPv6, but I have a static IPv4 address. I've read about 6to4 and signed up at tunnelbroker.net, but quickly felt out of my depth. How do I configure my network to use it, and how I should configure my DHCP server with regards to IPv6 addresses?

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• Time values not saving in Airport Base Station MAC Timed Access List

  - by Boiler Bill

  I have an airport base station model A1354. I am attempting to setup MAC Timed Access so a laptop can only connect between 5:00AM and 11:00pm through the Airport Utility version 5.5.2 (552.11). My AEBS is running firmware version 7.5.2 When I try to enter the time values by double clicking over the time and entering 05:00 AM and 11:00PM the time values don't stay as soon as it looses focus. Instead they become what is in the following screenshot, and the laptop looses connectivity as soon as I update the base station. I also tried entering the values in military time with the same result. Any base station power users out there that know how I can get the time values to "stick"?

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• Survey for OS/Browsers etc for an external Agency.

  - by ggonsalv

  We need to design an browser application accessed by a fixed set of external entities (providers). I was wondering if there is a pre-existing survey that is 1) Online 2) Determines the browsers being used etc. without the users having to type it in 3) Determine connectivity from IP address. (Like how Speedtest.com does ). It can tell what your ISP is ,etc without having the user fill it in. The ability to add other questions. So basically a recipient of the survey would navigate to the site, the survey questions that can be inferred , are prefilled so as make recipient only answer the non-technical questions of the survey.

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• SQL 2008 R2 3rd Party Peer-to-Peer Replication, Global Site Distribution

  - by gombala

  We are looking at hosting 3 globally distributed SQL Server installations at different data centers. The intent is that Site A will serve web traffic and data for a specific region, same with Site B and C. In the case that Site A data center goes down, looses connectivity, etc. the users of Site A users will fail over to Site B or C (depending which is up). Also, if a user from Site A travels to Site C they should be able to access their data as it was on Site A. My questions is what SQL replication technology (SQL Replication or 3rd party) can support this scenario? We are using SQL 2008 R2 Enterprise at each site, each site runs on top of VMWare with a Netapp filer. Would something like distributed caching help in this scenario as well? We have looked at and tested Peer-to-Peer replication but have encountered issues with conflicts during our testing. I imagine there are other global data centers that have encountered and solved this issue.

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• IIS permissions issue pointing docroot to Samba share

  - by lalalalalalalambda

  I have an IIS project which is stored on a Samba shared, network mounted with the following line: X: \\my-samba-server\dev /user:freddie Connectivity is fine, can read/write files from X:. In IIS, I'm trying to set it as the Physical path via \\my-samba-server\dev\folder\to\my\files, which results in the following 500.19 error: Config Error | Cannot read configuration file due to insufficient permissions It is by default trying to use the Pass-through authentication. If I try to set this to connect as the specific user freddie, I receive: The specified user does not exist What is the correct way to connect to a path which has been setup as described above? *Samba man pages indicate version 3.6 is on the Debian host

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• Apple file sharing: bind to a specific interface

  - by Cesar

  My customer have an office small office with just a wifi router. He use this router for internet connectivity and file transfer operations between the desktops. Recently the file transfer activity between desktop (all osx based) is increased a lot so he bought a switch (no connected to the router, too far away) for transfer the file over the cable instead over the wifi. Problem: How to bind the file sharing service just to the Ethernet interface and exclude the wifi interface ? (actually the service binds to the wifi automatically and there are no options about the interface binding)

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• Providing internet access to users in an Enterprise (MPLS ) Network

  - by Vivek Bernard

  Scenario I'm planning to setup a typical Head Office - Branch Office(s) Network Setup. there will be 25 branch offices in India of two will be overseas (one in US and the other in UK). All these will be connected via MPLS. Additional details: No of Concurrent users in each office is going to be 25 tranlating to 650 users The requirement is to provide "proxied" internet connectivity to the branch offices. How should I go about doing it? Plan A: Buying an internet leased line in the Head Office and distribute it through an internal proxy server to all the branches Plan B Buying separate internet lines for all the branches and setup individual proxies to all the branch offices.

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• IPv6 6to4 on Windows Server

  - by Graham Wager

  I'm looking for a relatively simple guide to setting up an IPv6 tunnel properly. This network currently has a server (Windows Server 2008R2) running RRAS that establishes connectivity to the internet using a demand-dial PPPoE connection and handles the NAT. It also hosts a DNS server and DHCP. My ISP does not support IPv6, but I have a static IPv4 address. I've read about 6to4 and signed up at tunnelbroker.net, but quickly felt out of my depth. How do I configure my network to use it, and how I should configure my DHCP server with regards to IPv6 addresses?

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• where do i find the drivers for a F5D7000 Belkin wireless adapter?

  - by neubert

  So I plugged an F5D7000 Belkin desktop wireless adapter into my desktop. Here is a picture of it: I did a Google search and found the drivers. I installed the latest version - (F5D7000 - Driver - Version 8xxx), and the NIC is still unrecognized as per the next screenshot: Does anyone have any ideas on how to get this working? I'm running Windows XP SP3 32-bit. (I have taken a screenshot but without network connectivity I can't email it or post it anywhere and I don't have a USB stick.)

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• Slow Internet connection

  - by Muthu Kumaran P

  My internet connectivity from my Laptop slowed down overnight. I have no clue as what had happened. I was able to download at 300kbps the day before yesterday. And from yesterday on, my internet has been slow. My download speed is at 25kbps. Can someone help me to resolve this issue? I am using wireless connection on my Sony Vaio. I am not sure what else info I need to give as this is my first time to post a question here..

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• diagnostic software for wifi adapter

  - by Nathan Fellman

  I'm having trouble with my wifi connection. Is there any software out there that can help me determine if the problem is in the drivers or in the hardware? Regretfully, I'm working on Vista Edit: The problem I'm having is that the Vista reports that the wireless radio is connected, shows an IP and all, the router also shows that the computer is connected, but there's no connectivity. I can't logon to the router, and I can't even ping it. When I ping it I get the response: General Failure I have tried connecting with and without various wireless security protocols. I have tried disabling the wireless adapter and re-enabling it from the Device Manager I have tried updating the driver None of this has helped. When I connect via Ethernet (with a cable, that is), everything works fine. Edit: I'm not using any firewall on the computer, that I'm aware of. The IP address for the WIFI adapter is similar to the one for the LAN adapter. They differ by one.

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• Amazon EC2 - Unable to connect to MySQL

  - by alexus

  I'm having issue connecting from one VM to another # nmap -p3306 ip-XX-XX-XX-XX.ec2.internal Starting Nmap 6.40 ( http://nmap.org ) at 2014-06-10 17:50 EDT Nmap scan report for ip-XX-XX-XX-XX.ec2.internal (XX.XX.XX.XX) Host is up (0.000033s latency). PORT STATE SERVICE 3306/tcp closed mysql Nmap done: 1 IP address (1 host up) scanned in 1.05 seconds # in my Security Group I allowed Inbound connectivity via port TCP, portrange 3306 and Source 0.0.0.0/0, so theoratically it should work, but in reality it doesn't( I'm running red hat enterprise linux 7 on both VMs. mariadb.service running fine on another VM and I am able to connect to it locally. DB's: # netstat -anp | grep 3306 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 2324/mysqld # iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination # Any ideas what else I missed?

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• VMware two vSwitches Guests can't communicate between them

  - by Aaron R.

  I have some servers in this configuration: And I am not able, from VMGuest1, to ping either VMGuest3 or VMGuest4. I can, however, ping Host1 and Host2, which are attached to pSwitch1. The behavior is the same with VMGuest3 or 4 trying to ping VMGuest 1 or 2. I don't have promiscuity enabled for any of these switches, nor do I have a bridge set up inside ESXi for the virtual switches. I know that one of these options is usually necessary when trying to get connectivity between two virtual switches. These switches are connected, however, through their respective physical switches which are bridged together. Ping just times out, arp request looks like this: [root@vmguest1:~]# arp -a vmguest3 vmguest3.example.com (1.2.3.4) at <incomplete> on eth0 [root@vmguest1:~]# arp -a host1 host1.example.com (1.2.3.5) at 00:0C:64:97:1C:FF [ether] on eth0 VMGuest1 can reach hosts on pSwitch1, so why can't it get to hosts on vSwitch1 through pSwitch1 the same way?

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• IPv6 connections routed to IPv4 device

  - by Yvan JANSSENS

  I have an IBM 9406-250 with V5R1 and IPv4 only connectivity, and want it to be reachable over IPv6. I cannnot install an IPv6 stack on it, but I want it to be accessible by IPv6 so I can drop the requirement to VPN to my home network. I have an OpenWRT device running, which takes care of the IPv6 routing on my network and the tunnel to SIXXS, and I was wondering if it is possible to assign another IPv6 address to that device, and route it to the IPv4 IBM computer. Which software do I need for this, and how is this technique called?

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• How to reliably synchronise file servers between London and Shanghai?

  - by Andy S

  We have two offices, one in London and one in Shanghai, each needing to be able to access the same set of files. This means we need a solid, speedy means of synchronising a set of folders between servers at either office. They're likely to be Windows servers, but we could look at Linux boxes if the software side makes more sense on *nix. We've considered Rsync, Unison, Gluster, and a few other options, but none of them seem capable of reliably keeping the servers in sync between such distant office locations. Each office is on DSL connectivity over the open internet, so encryption is also a factor. Does anyone have any hints for getting the servers synchronising in as close to real time as possible, without dying constantly? Andy

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• Why would http & https be blocked, even in safe mode with firewall disabled?

  - by Cogwheel

  I have a windows 7 machine (dell studio xps). Everything on it seems to be in working order. The network device says it has internet connectivity, and indeed I can ping websites, transfer files via ftp, connect to vpns and remote desktop, but the web won't work. I've disabled the windows firewall and still no go. There are no other firewalls installed. The computer came with a trial of norton 360 so I also used the norton removal tool (which solved a similar problem on another computer for me previously). Any thoughts?

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• Computer never connects to the internet automatically on startup?

  - by RawR Crew

  I have my Windows Vista laptop connected directly to the router via an ethernet cable, and every time I switch the computer on, the computer cannot connect to the internet. It comes up as limited or no connectivity, I am assuming because it has not been assigned an IP address by the router - not too sure if this is right. The problem is usually fixed either by performing a repair through the networking control panel or removing and re-inserting the ethernet cable. It will also connect without doing any of these if the computer is left idle for about 20 minutes. It will connect fine wirelessly without the need for any of this, however I would prefer to connect via the cable. Any ideas how I can fix this? I have replaced the ethernet cable and router already (identical model) but these haven't helped. Thanks for any help on this.

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• SSL client auth in nginx with multiple server section

  - by Bastien974

  I want to implement ssl_verify_client in nginx. This works perfectly when I only have one server section, which listen to 443. In my case I have multiple, all listening on 443 but to different server_name. For one particular server (proxy.mydomain.com), I'm adding the SSL client verify, but when I test the connectivity with openssl s_client -connect proxy.mydomain.com:443 -cert xxx.crt -key xxx.key and then do a GET / HTTP/1.1 host: proxy.mydomain.com It's not working, 400 No required SSL certificate was sent I think nginx is not receiving the proper server_name and is directing it to the first server listening to 443. So I tried to listen on another port and it worked right away. What's the issue and how can I fix it ?

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• OpenVPN client on Amazon EC2

  - by Matt Culbreth

  I have an account with an OpenVPN service, and I'd like to get that running on my EC2 instance running Ubuntu 12.04. I have my config file in /etc/openvpn, and it connects fine when I run sudo openvpn --config matt.ovpn. However, I then lose connectivity to the EC2 machine, and I can't SSH back to it until I reboot. Previously I have done things like sudo ip rule add from IP_ADDRESS table 10 and then sudo ip route add default via GATEWAY_IP table 10, but that's not working on EC2. Any ideas? My private IP address right now is 10.209.29.XXX and my gateway is 10.209.29.1.

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• Windows VPN not authenticating from ADSL to Wireless link

  - by deanvz

  I have a normal windows VPN on a computer connecting to a 196.201.x.x/24 IP. If this VPN tries to connect from any address in the 41.x.x.x range it cant get there. The server is a normal windows 2008 server, running exchange with a PPPoE IP natted to a public IP on the public gateway of the wireless network as the server is on site and its connectivity is derived from Mikrotik RB's. The computer on the 41 range can traceroute and ping the server, but the VPN does not authenticate. When on the network or any other, the VPN works fine. Is there something that could be configured on the VPN client? All firewall settings of a standard ADSL router have been checked and found to block only ICMP's. Is this a VPN configuration problem or a network issue?

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• MSSQL: Choice of service accounts

  - by Troels Arvin

  When installing MS SQL Server 2008, one needs to associate a service account with the installation (possibly even several accounts, one for the SQL Server Agent, one for Analysis Services, ..., but let's leave that for the case of simplicity). The service account may be local account, or a Windows domain account. If a domain account is used: Can MSSQL start, if connectivity to the domain controllers is temporarily down? If the answer is yes: Should each DBMS instance on each server have a separate account, or does it make sense to use a particular "MSSQL" domain account on all MSSQL-installations in the organization? If separate accounts are used for each instance on each server: Does it make sense to create a special MSSQL security group in the domain and place all the MSSQL service accounts in that group, perhaps to ease replication, etc? Is there a common, generally accepted naming convention for MSSQL service account(s)?

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