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  • VPN connects but no remote lan access

    - by Macros
    I have a PPTP_ VPN setup through Windows to a Cisco (LinkSYS) router, which was working fine up until yesterday. Now I can connect, and I can ping the router however I am unable to reach any of the machines on the remote network. I've tried this from multiple PCs on Multiple networks / internet connections wuth the same results. Any ideas what may have caused this?

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  • Is there a way to detect which port on an ethernet switch a device is connected to?

    - by banno
    Since the wall jack is typically always connected to the same port on the switch I would like to be able to know which device is connected at a specific location. In my case I am talking about printers. I have code to go out on the network and find the IP Address of all of my printers, but would like to be able to update a server based on a printer being swapped out of a location for maintenance or repair. Is there a method for determining a port connection?

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  • Problem with host-only in Virtual Box

    - by Kamiar
    Hi folks I have virtualbox software in my computer and I have windows 7 in host. my virtual has windows server 2008 and Sql server 2008 I have client SQL version in windows 7(host computer) but as you know virtualbox works in host-only network. I need Connection host to guest but I can not see virtual computer(win2008) from host (win7). Is there any solution ?

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  • How would I isolate one netowrked PC to LAN only?

    - by itsraine
    I would like to have one of my PCs available to the rest of my home network for file sharing and VNC access, but I want to block any Internet traffic going to and from the PC. In other words, I want all local PCs I have connected to the router functioning as any normal LAN would, but when it comes to the Internet I want one particular PC to be "safe" from the Internet. My guess is that this is some sort of port blocking or some other router function, but I'm not quite sure.

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  • Why can't we reach some (but not all) external web service via VPN connection?

    - by Paul Haldane
    At work (UK university) we use a set of Windows servers running WS2008R2 and RRAS which offer VPN service to students in our accommodation. We do this to associate the network connections with individuals. Before they've connected to the VPN all they can talk to is the stuff thats needed to setup the VPN and a local web site with documentation on how to connect. Medium term we'll probably replace this but it's what we're using at the moment. VPN on the 2008 servers allocates client a private (10.x) address. Access to external sites is through NAT on the campus routers (same as any other directly connected client on a private address). Non-VPN connections aren't seeing this problem. Older servers run WS 2003 and ISA2004. That setup works but has become unreliable under load. Big difference there was that we were allocating non-RFC1918 addresses to the clients (so no NAT required). Behaviour we're seeing is that once connected to the VPN, clients can reach local web sites (that is sites on the campus network) but only some external sites. It seems (but this may be chance) that the sites we can reach are Google ones (including YouTube). We certainly have trouble reaching Microsoft's Office 365 service (which is a pain because that's where mail for most of our students is). One odd bit of behaviour is that clients can fetch (using wget on a Windows 7 client) http://www.oracle.com/ (which gets a 301 redirect) but hangs when asked to fetch http://www.oracle.com/index.html (which is what the first URL redirects to). Access works reliably if we configure clients to use our local web proxies (Squid). My gut tells me that this is likely to be something in the chain dropping replies either based on HTTP inspection or the IP address in the reply. However I'm puzzled about why we're seeing this with the VPN clients. Plan for tomorrow (when I'm back in the office) is to setup a web server on external connection so that we can monitor behaviour at both ends of the conversation (hoping that the problem manifests itself with our test server). Any suggestions for things we should be looking at?

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  • How many Tomcat instances can one application server handle?

    - by NetworkUser
    My network engineer states I am part of a cluster where two apache application servers(512G RAM each) have 142 instances each of Tomcat (of which my company represents 6 each with 2G RAM). This seems like a lot and my latency issues move with the hour of the day - 7AM CST software functions fine, 10AM CST - system slows significantly this slowness continues until 6PM CST. My question is how many Tomcat instances can one application server handle?

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  • remote desktop access

    - by pnp
    I have my work system on the ip range 172.16.xx.yy, and I have my personal system on the ip range 10.0.xx.yy. Both of them, however, are on the same network of my University, but on different LANs/VLANs (i hope i used the right word here). How can I remotely connect to my work system from my PC, given that both use private IP addresses? If such a thing is not possible with current set up, what minimal changes are required for it?

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  • Choose source interface for PPTP VPN on Ubuntu

    - by Emyl
    I have an Ubuntu Virtualbox guest with two network interface, eth0 (NAT) and eth1 (bridged). I want to connect to a PPTP VPN using eth1, but I don't know how to specify which interface to use. If i just try: sudo pon myvpn nodetach It fails with: Using interface ppp0 Connect: ppp0 <--> /dev/pts/1 Modem hangup Connection terminated. Looking at routes with route seems to indicate that eth0 is being used: x.x.x.x.no 10.0.2.2 255.255.255.255 UGH 0 0 0 eth0

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  • Cisco 861 Router forces one-to-one NAT

    - by Slurpee
    I have a cisco 861 router that only allows one-to-one NATs in order to access the Internet. I would like for computers to get an address via DHCP from this router, and be able to access the Internet without needing to set a static NAT to one of my public IPs. What is wrong with the configuration? I have a basic understanding of the IOS CLI, most of the configuration file (edited for content) was created by my company's long gone Senior Network Engineer.

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  • How to properly secure Windows Server 2008 R2 that will host SQL Server 2012?

    - by Max
    I am a .net programmer trying to create this setup: I want this server to be inaccessible through DMZ accept for IPSEC connections, and to also have a private network which will be accessible through another windows 2008 server which will host vpn. That is how our windows 2003 infrastructure works and I am trying to do the same with 2008 servers, are there any guides or documentations that have this scenario?

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  • Is it safe to swap SATA ports during hibernation?

    - by netvope
    I hibernated my Windows 7 desktop PC, replaced the SATA cables of my 2 hard drives (without paying attention to which ports they were connected), and resumed the system. Everything appeared normal and it entered the desktop with all the applications previously open before hibernation. However, after a few seconds, the screen became frozen and the system no longer responded to anything (mouse/keyboard/network ping). Does anyone have a definitive answer on whether changing SATA ports of the HDDs during hibernation would crash a Windows 7 system?

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  • How to set up a home SIP Server/Proxy for multi ring?

    - by zio
    I have a sip account which only allows one device to be registered. When i'm at home I want incoming calls to be able to ring on multiple devices. All of these devices are connected to the local network. I'm guessing the way to do this is using a local server/proxy that would allow multiple registrations which then forwards traffic to/from my sip provider. What a simple way to do this on either OS X, Ubuntu or using some low cost SIP router hardware?

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  • win2003 server I cannot browse any ip address

    - by Abdelhadi
    On my server with Windows 2003 Server after a fault in the RAM, I can ping to all IPs but I cannot see it at My Network Places. Could you help me if there is any Windows components to be reinstalled, or any registry entries to be redefined. Or is there any other solution? Thanks

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  • URL not responding on OS X, fine on other machine

    - by Rory Fitzpatrick
    For some reason I can't access anything on python.org. nslookup resolves the IP address, but no browser or curl command will fetch anything. It works fine on a VMWare Ubuntu virtual machine and on a Windows machine on the same network. I've checked there's nothing funny in /etc/hosts I don't know where else to go looking for issues, can anyone suggest anything? Running OS X 10.5 Leopard

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  • scp stalls and ssh sessions freeze up (but eventually start again)

    - by coleifer
    I am running ubuntu on various computers on a home wireless network. Some are on 9.04x64, some 10.04x64 and one 9.04x32. Running scp with a large file starts out at 2.1 mbps and drops down to about 200k, stalling and dropping until the transfer is complete. I've noticed this when I have a secure shell open on any of these servers as well. I have tried this with 2 different routers, both brand new, different brands.

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  • How to disable wifi usage on Windows 7

    - by Eric
    On a laptop, we currently use LAN(RJ45) connection to access internet. But from time to time, on startup, the laptop "catch" an unsecured wifi hotspot from one of my neighbors, so we would like windows 7 to NOT choose any wifi network : how this can be done ?

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  • How can Icheck how much data has been transfered in a particular remote computer in my LAN?

    - by oDx
    I am the system administrator. I am suspecting some unwanted data transfers in some of the computers under my lan. This also effects the overall performance of the network. Is there anyway by which i can check the transfered data over a particular interval. I am not supposed to install any applications on any other computers than mine. I have the router access. I can use tools like ettercap dsniff wireshark etc.

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  • restore admin share C$

    - by woodelf
    My admin share C$ has been removed causing our server managed security - Sophos Endpoint Security and Control, to stop updating this client because it is unable to create local tasks. I've searched for two days now, lots of stuff about disabling C$ or allowing network access via a regedit - but nothing about restoring a missing "default admin share C$". OK I can recreate C$ from the mmc but it's removed on a reboot. System is Win7 Pro 64-bit on a domain Very grateful for any help... Nick

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