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  • Sending a UDP message to a computer inside a network

    - by Dan
    Say I have the ip and mac address of a computer inside a network and I wish to send him a UDP message. By initializing the mac and ip addresses of the sent message to the given, when the network router recives the message he should pass it to the computer with the same mac address...right? Im asking becuase a program I write dosent seem to handle this limitation. it works great when its on the same network, but otherwise ...nada. Thanks

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  • How can I make my livebox route to my external IP address for a computer in the DMZ?

    - by Noli
    I have a sagem livebox 2 (Fiber optic model), and have placed my computer in a DMZ. People from outside of my network can access my comp fine via its external dyndns.org address, yet when I try to call the public dyndns.org address from inside my network, I get redirected to the internal admin site on the router. How can I make it so that I can see my comp from the public address like everyone else? What kinds of questions should I be asking or looking into? Thanks

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  • Recomended home ADSL wireless routers

    - by beakersoft
    I'm going to buy a new ADSL wireles broadband router, but i'm not sure what might be a good one. I want it to have some form of QOS on it, and SNMP support so i can see my port usage over MRGT. I've looked at various models but they all seem to have conflicting reviews, i am looking at something along the lines of the Dlink DSL-2740R but any suggestions would be much apreciated

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  • Zyxel P-320W: How to connect to my web server using public IP

    - by hvtuananh
    My company's router is Zyxel P-320W and I have a public static IP. I registered a few domains name and point to this IP address. I already setup Virtual Hosts and configured port-forwarding to my internal server and it works well. I can connect to all domains from outside The problem is I cannot connect to my domains from inside One workaround way is modify hosts file to add internal IP for those domains, but my company have many computers and I don't want to setup all PC manually

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  • cannot connect via http but can via ssh in Windows 7

    - by Tim
    Hi, I have a strange problem in my Windows 7. Sometimes web browsers (ie firefox and chrome) works sometimes don't. But ssh is always working. What could be the reason and how to fix it? My router is Linksys WRT54GL. Web browsing via firefox in my Ubuntu is okay. Thanks and regards!

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  • Local IP address same as Google's external

    - by GRIGORE-TURBODISEL
    I'm exampling Google's IPs, but you get the idea. What happens if somebody configures a router's LAN address pool to range from 62.231.75.2 to 62.231.75.255, then his computer's IP address to 62.231.75.232 and someone else on the network tries to access Google? Or better off, is there any case in which someone in that network can, by merely attempting to access Google, accidentally bump into another computer on the network?

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  • Wifi randomly drops on Windows 8 laptop

    - by JosiahS
    First of all, I did a lot of research on this problem, and I wasn't able to come to any helpful conclusion. I've finally decided that I need advice from those who might know where to look. So don't let me down. :P I used to have an older Windows 7 laptop, which worked great for basic office and web browsing. However, I wanted something that would play actual modern games. So I recently bought a Sager NP8235 with the Intel Wireless-AC 7260 wifi card, and installed Windows 8 Pro on it. And ever since, I've been having problems with the wifi. Generally, what happens is if I leave the laptop on but inactive for an extended amount of time (I've estimated it around an hour to two), the wifi will start dropping randomly. If I happened to have a download going at the time, it usually causes the download to fail. Or, if I put the laptop to sleep overnight, the next morning I usually have to restart the computer because the wifi device apparently stops working (it literally won't turn on). Also, and most frustrating, whenever I'm on a video chat (like Skype), after about ten minutes, the connection will start lagging like crazy, until it forces Skype to end the call. After that, I usually have to disable and reenable the wifi to get it working again. I know it isn't our internet, because all the other computers in our house (~8) don't have any issues. Even the old Windows 7 laptop (connected also over wifi) works just fine, scoring the normal ~3Mbps average on speedtest.net (yes, I know our internet is slow, we live out in the country). Additionally, when I connect the Sager directly to the router via ethernet, the internet instantly starts working just great. Like I said, I've done a lot of googling to figure out what's going on, and I haven't been able to find anything that worked for me. Is it Windows 8 conflicting with the Wifi drivers? As of this writing, I have the Intel drivers v16.1.5.2 installed (without the extra Intel software). Or is it our router? It's a TP-Link TL-WR841ND, set to the default settings. The Sager is currently being assigned to a static IP, if that makes any difference. And yet, the old windows 7 laptop has a much more stable connection than the Sager. Anyone have any ideas? At this point, I'd appreciate even knowing what the problem is.

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  • need direction with assigning 2 ip addresses from my isp for gaming and web hosting

    - by user269451
    Hello and thank you for the help in advance. I have a Windows server 2003 that I want to use to host my companies website and a game server for MineCraft. I have a few weblinks bookmarked in regards to setting up the web and game server but no idea what I do with the two static ip's. Do I assign each network adapter the static ip's or do they go on the router? Any help and direction is greatly appreciated.

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  • How to route all network traffic for vlan through a proxy server on SRX

    - by user112570
    I'm trying configure an SRX router to automatically forward all traffic through a proxy server i have in the USA. I have created a separate vlan and configured the proxy but not sure how i can route all traffic through this. The aim of this task is create a test network which makes users appear in the location of the proxy server. (with the external ip address of the proxy) Is this possible and how should i do this. Am i approaching this the right way? Thanks

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  • Why should I use a switched network over routed?

    - by SRobertJames
    Now that routers are affordable, why should I build a network using Layer 2 switches, which degenerate to broadcasting under poor conditions, and not just use real routing at Layer 3? Edit: Got some great replies. Let me clarify the question: Of course, at the lowest level, you want to plug your end nodes into a switch, not a router (as demonstrated by AlReece). I'm referring to switches which are used to bridge traffic between segments - that is, switches connected to other switches.

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  • Software Router: pfSense or Vyatta ?

    - by Kedare
    Hello, I'm rebuilding my home network and I am look to an alternative to the very expensives Cisco. So I take a lookt at the software routers, I've found Vyatta and pfSense. I have tested both and I find both great, but I don't know which one to choose. I need a router software that : Supports IPv6 (both do with pfSense 2 RC1) Allows me to join an OpenVPN Network Is free Configurable by CLI (WebGUI is a plus) After some testing, it looks like both a very featured, but Vyatta looks more CLI-centric where pfSense looks more WebGUI-centric. Which do you recommend me ? Why ? Is there any limitations on the free version of Vyatta ? I would like to run it on a small box like Soekris ones, it that possible ? (pfSense will run it, but I'm not sure with Vyatta) Thank you

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  • I can't get router and switches configured properly for my home office network

    - by BernicusMaximus
    Networking Gurus, I recently built a new detached garage, with an office above. As such I had it tied into my existing home ethernet wiring. The ethernet signal is coming into the garage just fine, but I can not get my network configured the way I want because of problems trying to link the various router/switch devices. Please see the following links for the network diagrams: Home Network So basically, I can't my future state to work. I'm not sure if I'm using incompatible switches or what, but I tried the future state with some 4 port switches from best buy and had no luck. I resorted to setting up the Current State so I could operate. What I am looking for is help on how best to get my future state to work. Is this possible with my current configuration, and if not, what should I do? Any help is appreciated. Thanks, Bernie

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  • How to use router QoS?

    - by Nathaniel
    N00b question. How exactly does one use router quality of service settings? I've read up on it a bit but I'm still not exactly sure how to use it. So, my real questions are these: Generally, how does QoS work? How would one use it, say, to guarantee smooth performance in latency sensitive application (cough online gaming cough)? Performance for that sort of stuff bombs out on our connection when somebody is uploading files. I apologize if this is kind of sprawling. Suggestions to clean it up / edits welcome.

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  • Cookies blocked by router?

    - by Martin wiboe
    Hello, My friend has a D-Link DI-524 router that she uses for her home broadband. It's a pretty vanilla setup with the standard firewall settings, DHCP enabled etc. However, recently she has experienced something strange - cookies are not working on every computer on her LAN, whether using FF3.5 or IE8. I tried viewing the HTTP traffic using Fiddler2, and the requests come through fine (mind you, Internet browsing still works flawlessly) but whenever a website tries to set a cookie using the "Set-Cookie:" header, my computer sees that line as "Set-*ookie:" with the cookie contents removed. I have never seen anything like this - do you have any idea? Regards, Martin

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  • ssh all machines behind a router

    - by Luc
    Hello, I have several machines on my lan. One is used as a http proxy to target web sites located on the others (that's working fine now thanks to ServerFault). On my router, Port 22 is NATed to this proxy machine. I would like to be able to access the other machines, within internet, with something like: ssh user@first_machine.my_domain.tld ssh user@second_machine.my_domain.tld Could I use the proxy machine to 'filter' the incoming ssh request and to route them to the correct machine ? (in the same way it's possible to do so for web sites using a mix of mod_proxy and namevirtualhost in Apache) Thanks a lot, Luc

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  • Connect two subnets without router

    - by Shcheklein
    I got two Comcast routers with two different subnets on each. Every subnet contains 5 static IPs. Two questions: Are there any problems if both routers and machines from both subnets are connected into one switch? Security issues doesn't matter there. I need to know if there are some performance or other problems. Is it possible to make machines from different subnets to see each other if they all are connected into one switch? Some static routing, add ARP records or somethig else ... I just want to avoid configuring second ethernet adaptors, third router or something. And I need to connect these subnets vai high-speed local network.

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  • Freebsd or Linux? as BGP router over 100mbps

    - by Yucong Sun
    I am building a server to act as a BGP border router for my 100mbps uplink in ISP. I needs these feature: 1) Dual stack BGP peering/routing (at least 100Mbps, maybe more). 2) Potential full internet BGP feed. 3) Some basic ACL functionality. The hardware is L3426/8G ram. NIC will be on-board dual port Broadcom 5716. I've worked with Linux extensively before and it seems to be able to handle 100mbps, but I heard FreeBSD is faster on networking stuff. Which one should I use? And do we have some performance benchmark numbers out there? Cheers.

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  • Linux Router - Share bandwidth per IPs with current active connections

    - by SRoe
    We have a Linux machine running as a custom router, currently utilising Shorewall. This sits between our incoming internet connection and the internal LAN. What we would like to achieve is 'fair use' of the bandwidth on a per IP basis. If only one person currently has an active connection then they get 100% utilisation of the line. However if 20 people have active connections then they should each get 5% utilisation of the line. This should be irrespective of the number of connections held by each user. For example, say we have two users, Bill and Ted, that both have active connections. Bill has a single active connection while Ted has ten active connections. Bill should get 50% utilisation for his single connections whilst Ted should get 5% utilisation for each of his ten connections, giving Ted a total utilisation of 50%.

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  • ignore ipv6 router advertisements for static addresses with bonded interfaces

    - by boran
    I need to attribute static IPv6 addresses (not use autoconfigured addresses, and ignore router advertisements). This can be done as follows for a standard interface like eth0 iface eth0 inet6 static address myprefix:mysubnet::myip gateway myprefix:mysubnet::mygatewayip netmask 64 pre-up /sbin/sysctl -q -w net.ipv6.conf.$IFACE.autoconf=0 pre-up /sbin/sysctl -q -w net.ipv6.conf.$IFACE.accept_ra=0 However, how can this be done for bonded interfaces? using the "all" interface does not work. Systems is Ubuntu 10.04, 2.6.24-24-server. If one uses the above sysctl command for the bond0, the networking hangs on boot, because /proc/sys/net/ipv6/conf/bond0 does not yet exist and cannot be written to. One the system has booted /proc/sys/net/ipv6/conf/bond0 exist, so one solution after booting is to add the following to /etc/rc.local: /sbin/sysctl -q -w net.ipv6.conf.bond0.autoconf=0 /sbin/sysctl -q -w net.ipv6.conf.bond0.accept_ra=0 /etc/init.d/networking restart and this has the desired effect, the autoconfig v6 address disappears. Seems like a bit of a hack though, are there better solutions?

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