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  • Limit bandwith on network of computers

    - by Joseph34123
    We have network in office of approximately 10 computers sometimes when someone downloads something for work (e.g. syncing email with an attachment or Dropbox), everyone slows down. I could limit each computer in office but the problem is that we have an open WiFi network, and I cannot access the computers that use it. We have one main DSL router "Netopia 3347" and another router connected to it on wire for public wifi is "Linksys WRT110". I cannot change the setup we have and don't want to. There's 2 approaches here: Set office computers download limit in each computer and then I need to find out how I can set a download limit for the wifi network such as in the router settings. It's a Linksys router and I did not see the option for this, so maybe I need new router for WiFi? Don't bother with each computer and put some "specific hardware" or another computer before router so all traffic goes trough it and I can then assign priority maximum speed for each IP address. Question is what hardware do I need?

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  • iptables: allowing incoming for 192.168.1.0/24 allowed incoming for all?

    - by nortally
    The internal side of my ISP router has three devices: ISP router 128.128.43.1 Firewall router 128.128.43.2 Server 128.128.43.3 Behind the Firewall router is a NAT network using 192.168.100.n/24 This question is regarding iptables running on the Server. I wanted to allow access to port 8080 only from the NAT clients behind the Firewall router, so I used this rule -A Firewall-1-INPUT -s 192.168.100.0/24 -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT This worked, but UNEXPECTEDLY ALLOWED GLOBAL ACCESS, which resulted in our JBOSS server getting compromised. I now know that the correct rule is to use the Firewall router's address instead of the internal network, but can anyone explain why the first rule allowed global access? I would have expected it to just fail. Full config, mostly lifted from a RedHat server: *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :Firewall-1-INPUT - [0:0] -A INPUT -j Firewall-1-INPUT -A FORWARD -j Firewall-1-INPUT -A Firewall-1-INPUT -i lo -j ACCEPT -A Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A Firewall-1-INPUT -m comment --comment "allow ssh from all" -A Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A Firewall-1-INPUT -m comment --comment "allow https from all" -A Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT -A Firewall-1-INPUT -m comment --comment "allow JBOSS from Firewall" ### THIS RESULTED IN GLOBAL ACCESS TO PORT 8080 ### -A Firewall-1-INPUT -s 192.168.100.0/24 -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT ### THIS WORKED -A Firewall-1-INPUT -s 128.128.43.2 -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPt ### -A Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT

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  • Multiple Set Peer for VPN Failover

    - by Kyle Brandt
    I will have two Cisco routers at Location A serving the same internal networks, and one router in location B. Currently, I have one router in each location with a IPSec site-to-site tunnel connecting them. It looks something like: Location A: crypto map crypto-map-1 1 ipsec-isakmp description Tunnel to Location B set peer 12.12.12.12 set transform-set ESP-3DES-SHA match address internal-ips Location B: crypto map crypto-map-1 1 ipsec-isakmp description Tunnel to Location A set peer 11.11.11.11 set transform-set ESP-3DES-SHA match address internal-ips Can I achieve fail over by simply adding another set peer at location B?: Location A (New secondary Router, configuration on previous router stays the same): crypto map crypto-map-1 1 ipsec-isakmp description Tunnel to Location B set peer 12.12.12.12 set transform-set ESP-3DES-SHA match address internal-ips Location B (Configuration Changed): crypto map crypto-map-1 1 ipsec-isakmp description Tunnel to Location A set peer 11.11.11.11 ! 11.11.11.100 is the ip of the new second router at location A set peer 11.11.11.100 set transform-set ESP-3DES-SHA match address internal-ips Cisco Says: For crypto map entries created with the crypto map map-name seq-num ipsec-isakmp command, you can specify multiple peers by repeating this command. The peer that packets are actually sent to is determined by the last peer that the router heard from (received either traffic or a negotiation request from) for a given data flow. If the attempt fails with the first peer, Internet Key Exchange (IKE) tries the next peer on the crypto map list. But I don't fully understand that in the context of a failover scenerio (One of the routers as Location A blowing up).

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  • Port forwarding + shared connection with Ubuntu

    - by Joey Adams
    Because my wireless router's ethernet ports are defective, I set up a shared wireless connection from my laptop (which has wifi) to my eMac (which does not) via a crossover ethernet cable. The laptop is behind a router as 192.168.1.131, and the eMac is behind the laptop as 10.42.43.1 . The laptop is running Ubuntu 9.10 (Karmic). I achieved the shared connection through NetworkManager Applet. I right-clicked on the network icon at the topright, went to Edit Connections, selected the Wired connection named "Auto eth0", clicked "Edit...", went to the "IPv4 Settings" tab, and selected the Method "Shared to other computers". The eMac can now access the Internet. Now I want to enable port forwarding. There's a game I want to play that needs port 6112 forwarded (both TCP and UDP) in order to host games. I set up the router to enable port forwarding for 192.168.1.131 (the laptop), but port forwarding still isn't available on the eMac. I suppose I need to pretend my laptop is a router and configure port forwarding on it, indicating that incoming connections to the laptop (192.168.1.131) should be forwarded to the eMac on the shared connection (10.42.43.1 ). Thus, packets coming into the router on port 6112 would be redirected to the laptop (by the router), then to the eMac (by the laptop). My question is, how would I do that on Ubuntu (in light of NetworkManager's presence)? Also, if I can't get this to work, does anyone mind hosting a comp stomp? :D

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  • Ubuntu Laptop as a wireless hotspot on bridge mode

    - by nixnotwin
    I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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  • Ubuntu Laptop as a wireless hotspot on bridge mode

    - by nixnotwin
    I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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  • Bridging my laptop's wireless and wired adaptors

    - by stacey.richards
    I would like to be able to connect a desktop computer that does not have a wireless adapter to my wireless network. I could just run a network cable from my ADSL/wireless router to the desktop computer but sometimes this is not practical. What I would really like to do is bridge my laptop's wireless and wired adapters in such a way that I can run a network cable from my laptop to a switch and another network cable from the switch to a desktop computer so that the desktop computer can access the Internet through my ADSL/wireless router via my latop: +--------------------+ |ADSL/wireless router| +--------------------+ | +-------------------------+ |laptop's wireless adaptor| | | |laptop's wired adaptor | +-------------------------+ | +------+ |switch| +------+ | +-----------------------+ |desktop's wired adapter| +-----------------------+ A bit of Googling suggests that I can do this by bridging my laptop's wireless and wired adapters. In Windows XP's Network Connections I select both the Local Area Connection and the Wireless Network Connection, right click and select Bridge Connections. From what I gather, this (layer 2?) bridge will examine the MAC address of traffic coming from the wireless network and pass it through to the wired network if it suspects that a network adapter with that MAC address may be on the wired side, and vice-versa. If this is the case, I would assume that when the desktop computer attempts to get an IP address from a DHCP server (which is running on the ADSL/wireless router), it would send a DHCP broadcast packet which would pass through the laptop's bridge to the router and the reply would return through the laptop's bridge back to the desktop. This doesn't happen. With some more Googling I find some instruction how this can be done with Linux. I reboot to Ubuntu 9.10 and type the following: sudo apt-get install bridge-utils sudo brctl addbr br0 sudo brctl addif br0 wlan0 sudo brctl addif br0 eth0 sudo ipconfig wlan0 0.0.0.0 sudo ipconfig eth0 0.0.0.0 Once again, the desktop cannot reach the ADSL/wireless router. I suspect that I'm missing some simple important step. Can anyone shed some light on this for me?

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  • IP queue buffer

    - by summerbulb
    I seem to have an issue with IP queue. I have a linux machine that I am using to run some experiments. The linux machine is configured to be a router, having two NICs, connecting two other computers, and managing their network traffic. All incoming packages are captured, using iptables, and analyzed by a C application. The application analyzing the packets has a built-in delay, as part of the experiment. So I have one very fast computer sending packets through my linux-router and a (relatively) slow linux-router that analyses and deals with the packets, one by one. This situation leads to the fact that when I fire up a sender application on one of the computers connected to the linux-router, my IP queue on the linux-router gets filled up (almost) instantaneously. The IP queue's max length is currently set to 1024, and if it overflows, the packets are dropped. This is expected and i'm OK with it. But, (and this is where it gets interesting), every now and then I get the following error: "Failed to receive netlink message: No buffer space available" At start, I thought this was due to the IP queue overflow, but after some analysis i found that sometimes I get the error even if the IP queue buffer did not overflow, and sometime I DON'T get the message even though the buffer DID overflow. When I run > cat /proc/net/ip_queue, I get the following table (also used to monitor the IP queue overflow): Peer PID : 27389 Copy mode : 2 Copy range : 65535 Queue length : 0 Queue max. length : 1024 Queue dropped : 1166875 Netlink dropped : 2916 Looking at the last two values, Queue dropped seems to refer to packets that did not manage to get into the IP queue because the buffer was full. I can see this value rise as I bombard the linux-router. Netlink dropped ( as it's name implies :) ) seems to have to do with the error i'm getting. I did my best to search for material on this error, but wasn't able to find anything that seemed to point me in the required direction. Bottom line: Why am I getting this error and what can I do to avoid it?

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  • VLAN Through Switch Doesn't Work

    - by vcsjones
    I have the following scenario: I have a Cisco Aironet 1040 access point. I have it configured with two SSIDs, each going to a different VLAN. So: SSID internal : VLAN 90 SSID guest : VLAN 70 On the router side, I have a Cisco RV220W (with the radios now turned off) and have setup VLANs with like VLAN IDs. VLAN 90 : 192.168.90.0/24 VLAN 70 : 192.168.70.0/24 As far as DHCP is concerned, each VLAN has a "DHCP Server" in the router's configuration: So with the access point connected directly to the router, everything works great. I connect to the internal network, and I get a 192.168.90.x address, and the guest network gets a 70.xxx address. Next I introduced a Cisco SG200-50 PoE switch between the router and the access point. The port is configured as a trunk port, so the VLAN tags should go right through the switch back to the router. However, when something is connected to the access point, nothing works. It isn't able to get an IP address, and manually assigning one doesn't seem to let any traffic route. Given that the access point works correctly when connected to the router directly, I believe the switch is misconfigured. What am I missing here? What can I use to better diagnose what the problem might be? It's small business equipment, so CLI access is not available. Below are screenshots of the switch's config. The access point is connected to GE2.

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  • linux routing issue

    - by Duc To
    Hi! I have 2 linksys routers which has linux running on it and using tomato firmware.. both has internet lines plugged on but only 1 acts as DHCP server (router 1) What I am having to achieve is that all packets goes to router 1 from internal IPs want to access internet will go out to that internet line but from 1 specific port, if router 1 detects packets from a specific source port (for ex: http port: 80), it will redirect that packet to router 2 and goes out to the internet from there.. I have found some documents which give solution that I will need a linux servers with 2 ethernet cards and then we plug both internet lines on that server and routing base on it but I do not want to do that because my boss does not want to have an extra work mantaining that server, besides, he says that the router itself already a linux one so why.. I tend to agree his points.. Can it be done or a seperate linux server acting as a router is a must? Thank you all in advance and really look forward in your replies.. I am newbie to linux network and it seems to be something out of my capacity to solve :( Your sincerely! Duc To

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  • Basic connectivity issues between Win 7 and XP mixed wired/wireless network.

    - by Pulse
    Setup: Windows 7 x64 Ultimate desktop hard wired to Asus WL500gp router (WL500gpv2-1.9.2.7-d-r1445 firmware) Several Bridged VirtualBox VM's running XP, 7, ubuntu server 10.04, Mint 9 and SuSE 11.2 Win XP Pro SP3 notebook with D-Link Airplus wireless network card. No firewall or other security software currently running on either platform (at least for the duration of the test) Situation: Router is acting DHCP server Clients are receiving correct addresses and additional parameters Internet connectivity is available from all clients Windows 7 sharing is set to Network type = work (not home group) NetBT is disabled on all clients using smb over TCP What I can do: I can ping the router and internet addresses from the wireless XP notebook I can ping the Win 7 desktop and any VM from the XP wireless notebook I can ping all devices from the router All VM's and 7 can ping each other and the router as well as Internet addresses What I can't do: I cannot ping the XP wireless notebook from either The Win 7 desktop or the VM's it alwats returns a destination host unreachable. Tracert resolves the name or the XP notebook but also returns a destination host unreachable. From the above it would seem that something is blocking connectivity in a single direction (from the Win 7 box to the Win XP notebook) only but the router can ping the XP notebook. Some fresh input would be most welcome, as this is beginning to drive me batty. Thanks

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  • Why does my microwave kill the Wi-Fi?

    - by Ohlin
    Every time I start the microwave in the kitchen, our home Wi-Fi stops working and all devices lose connection with our router! The kitchen and the Wi-Fi router are in opposite ends of the apartment but devices are being used a little here and there. We've been annoyed by the instability of the Wi-Fi for some time and it wasn't until recently we realized it was correlated to microwave usage. After some testing with having the microwave on and off we could narrow down the problem to only occurring when the router is in b/g/n mode and uses a set channel. If I change to b/g mode or set channel to auto then there is no problem any more...but still! The router is a Zyxel P-661HNU ("802.11n Wireless ADSL2+ 4-port Security Gateway" with latest firmware) and the microwave is made by Neff with an effect of 1000W (if this information might be useful to anyone). There is an "internet connection" light on the router and it doesn't go out when the interruption occurs so I think this is only an internal Wi-Fi issue. Now to my questions: What parts of the Wi-Fi can possibly be affected by the microwave usage? Frequency? Disturbances in the electrical system? How can setting Auto on channels make a difference? I thought the different channels were just some kind of separation system within the same frequency spectrum? Could this be a sign that the microwave is malfunctioning and slowly roasting us all at home? Is there any need to be worried? Since we were able to find router settings that cooperate well with our microwave's demand for attention, this question is mainly out of curiosity. But as most people out there...I just can't help the fact that I need to know how it's possible :-)

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  • Mac OS X will only upload zero-byte files through FTP

    - by tabacitu
    I'm using Mac OS X Lion and i've been having this problem with FTP (any FTP client, mind you. I tried Transmit, FileZilla, Cyberduck and the Terminal, all with the same result) I can browse files in my FTP Client, but when I upload files, the client hangs for a few seconds, then thinks it uploaded the files successfully, but it only creates a new file with one blank line in it. Sometimes, it manages to upload 4-5 lines. It then returns: 226 - Error during read from data connection 226 Transfer aborted But 2xx is a success message. It is not a server issue, since any Windows machine will upload just fine using the same network. Can anybody figure out what the problem is? It renders my mac useless for web development. The problem persists with SFTP and FTP with SSL/TLS. Later edit: Solved! Ok, turns out the problem goes away when I take out my router and connect directly through PPPoE. So the problem is with the router, I thought. But no, the problem is with the mac that connects through a router that connects through a PPPoE and tries to upload using FTP. Pretty specific, I know. The problem is with the MTU (maximum transmission unit). Apparently, mac os x breaks the file into chunks that are too large for the router to send, because the router's MTU was set lower than Mac OS X's. My router's was 1492, which is ok, but my Mac's MTU was 1500, which is unacceptable. I don't even understand why it works directly with PPPoE. Anyway, if you encounter the same problem, this is how you diagnose and fix it: In terminal, run: ifconfig | grep mtu to see what the MTU is for en0 (or en1, mine was en0) If it's 1500, run sudo ifconfig en0 mtu 1300 This should solve it. If so, it may only be until the next restart. You can also change the MTU in System Preferences \ Network \ Ethernet - Advanced \ Hardware

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  • Basic connectivity issues between Win 7 and XP mixed wired/wireless network. [Solved]

    - by Pulse
    Setup: Windows 7 x64 Ultimate desktop hard wired to Asus WL500gp router (WL500gpv2-1.9.2.7-d-r1445 firmware) Several Bridged VirtualBox VM's running XP, 7, ubuntu server 10.04, Mint 9 and SuSE 11.2 Win XP Pro SP3 notebook with D-Link Airplus wireless network card. No firewall or other security software currently running on either platform (at least for the duration of the test) Situation: Router is acting DHCP server Clients are receiving correct addresses and additional parameters Internet connectivity is available from all clients Windows 7 sharing is set to Network type = work (not home group) NetBT is disabled on all clients using smb over TCP What I can do: I can ping the router and internet addresses from the wireless XP notebook I can ping the Win 7 desktop and any VM from the XP wireless notebook I can ping all devices from the router All VM's and 7 can ping each other and the router as well as Internet addresses What I can't do: I cannot ping the XP wireless notebook from either the Win 7 desktop or the VM's; it always returns a destination host unreachable error. Tracert resolves the name or the XP notebook but also returns a destination host unreachable. From the above it would seem that something is blocking connectivity in a single direction (from the Win 7 box to the Win XP notebook) only but the router can ping the XP notebook. Some fresh input would be most welcome, as this is beginning to drive me batty. Thanks

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  • Can I make my Linksys WAG200G as an access point?

    - by Adnan Badar
    I have two routers one is dsl router (connected through my fone line) second is Linksys WAG200G, i want to use this router as an access point to increase the signal strength in my neighborhood can anyone please guide me step by step as i am not that good in networking i need to know both ways one by connecting a cable from the first router to the second and then make access point to the second one. second by connecting wireless from the first router to the second and then make access point to the second one. Thanks. Adnan

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  • "Hostile" network in the company - please comment on a security setup

    - by TomTom
    I have a little specific problem here that I want (need) to solve in a satisfactory way. My company has multiple (IPv4) networks that are controlled by our router sitting in the middle. Typical smaller shop setup. There is now one additional network that has an IP Range OUTSIDE of our control, connected to the internet with another router OUTSIDE of our control. Call it a project network that is part of another companies network and combined via VPN they set up. This means: They control the router that is used for this network and They can reconfigure things so that they can access the machines in this network. The network is physically split on our end through some VLAN capable switches as it covers three locations. At one end there is the router the other company controls. I Need / want to give the machines used in this network access to my company network. In fact, it may be good to make them part of my active directory domain. The people working on those machines are part of my company. BUT - I need to do so without compromising the security of my company network from outside influence. Any sort of router integration using the externally controlled router is out by this idea So, my idea is this: We accept the IPv4 address space and network topology in this network is not under our control. We seek alternatives to integrate those machines into our company network. The 2 concepts I came up with are: Use some sort of VPN - have the machines log into VPN. Thanks to them using modern windows, this could be transparent DirectAccess. This essentially treats the other IP space not different than any restaurant network a laptop of the company goes in. Alternatively - establish IPv6 routing to this ethernet segment. But - and this is a trick - block all IPv6 packets in the switch before they hit the third party controlled router, so that even IF they turn on IPv6 on that thing (not used now, but they could do it) they would get not a single packet. The switch can nicely do that by pulling all IPv6 traffic coming to that port into a separate VLAN (based on ethernet protocol type). Anyone sees a problem with using he switch to isolate the outer from IPv6? Any security hole? It is sad we have to treat this network as hostile - would be a lot easier - but the support personnel there is of "known dubious quality" and the legal side is clear - we can not fulfill our obligations when we integrate them into our company while they are under a jurisdiction we don't have a say in.

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  • Win-XP Browsers Hang on page load - (waiting for...)

    - by CHarmon
    Hello, I’m having problems with my browsers hanging on loading pages on my desktop machine. I’m using Windows XP Pro with SP3 and fully updated except for IE 8. All three of my browsers, IE 7, Chrome and Firefox are having the same problems. Pages are not being loaded and are hanging on “waiting for …”. The browsers are waiting for the page being loaded or ad servers. Sometimes a page will load but the loading graphic continues to be displayed as if the page were still loading when the page appears to be fully loaded. The problem is bad enough that I can’t really use any of my browsers. I can eventually get most pages to load by stopping and restarting the page load. I have DSL modem with a wireless router and I have been able to eliminate the modem and router from being the source of my problem. My laptop doesn’t have any problems even when hardwired to the router and with the wireless connection disabled. I deleted the NIC and let XP re-install. Also tried a different network cable. Tried the same router port used in the laptop test. One clue that may be important is that I can’t connect to my router using the desktop machine…the page hangs while trying to connect. I can ping the router and I can quickly connect to the router using the laptop. I also can’t use the Windows update process – the page never fully loads. The problem affects other user accounts and even happens in safe mode. I am convinced the problem is with part of the O/S…some layer able to affect all of the browsers. The purpose of this post is to see if anyone has some ideas before I do a XP repair. I have done quite a bit of trouble-shooting: Ran a full anti-virus scan with AVG – no problems. Ran full scans with Spybot, MalwareBytes and Sophos anti-rootkit – no problems. Ran Chkdsk with both options checked. Ran Disk Clean up Defragged RE-installed IE7 Cleared all the browser caches Ran Ccleaner (registry tool) Ran HijackThis – nothing unusual (problem happens in safe mode too) Ran Process Explorer – no unusual processes Used System Restore and fell back several days – no change in the problem Booted to last known good configuration – no change in the problem Ran MicrosoftFixit50199.msi – no change in the problem Any ideas or suggestions would be appreciated…I’m not looking forward to doing a repair on XP. Thanks in advance for any help.

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  • WiFi signal is lost every 3 minutes

    - by Software Monkey
    For several weeks now my Android phone has been losing it's WiFi signal momentarily, typically at about 3 minute intervals (about 3 minutes, 1.5 seconds) and occasionally at some longer interval that always seems to be just over 3 minutes. This causes an interruption of several seconds while the WiFi connection is re-established and typically fails any kind of download/streaming that is happening, makes web sites "unreachable" and generally makes the phone unusable as a data device due to the frequency. The signal remains down for about a second, but the phone takes a few more seconds to reconnect to the router. This happens regardless of proximity to the router, which otherwise show a very strong signal - usually -40 to -30 dBm or better in the same room, nowhere less than 060 dBm anywhere in the house. Changing channels does not help (I've tried 1, 4, 8 and 9). Nor does turning off the router's guest access. Nor does turning off the 5.0 GHz band. Monitoring the signal on my phone with WiFi analyzer, shows all WiFi signals on all channels drop to nothing when the WiFi connection is lost (there are two other networks on different channels which are strong enough to be relevant, with about 6 others constantly fading in and out). WiFi analyzer shows 3 separate signals for my router, the main 2.4 GHz, the guest 2.4 GHz and the 5.0 GHz. Using WiFi Analyzer on my wife's phone side-by-side shows no change in signal when my phone drops, nor does her phone drop. Monitoring the signal using our laptop, side-by-side likewise shows no signal loss and likewise the laptop does not lose it's WiFi connection. But, at work, the phone seems to not exhibit the same behavior, or, if it does, it's very occasional. Monitoring it all day at work I only saw the signal drop 3 or 4 times. The signal strength of the various networks there is comparatively weak. AT&T were super helpful: "Sorry, we can't help you with WiFi problems. You could try doing a factory reset on your phone". </sarcasm The router is relatively new, but has been working fine with this phone since last Dec. Phone : Motorola Atrix (about 8 months old). Router : Belkin N750 DB (F9K1103 v1 (01C)). Router Firmware: 1.00.46 (2011/10/28 6:37:11). Security : WPA/WPA2-Personal (PSK)

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  • How do I use namespaces in Backbone with RequireJs

    - by dev.pus
    I am unsure how I use namespaces in an modularized (RequireJs) Backbone environment. I have thought a bit how it could look like but am totally unsure if this is the right way. app.js (getting executed by main.js) define('App', ['underscore', 'backbone', 'Router'], function( _, Backbone, Router){ function initialize(){ var app = {}; // app is the global namespace variable, every module exists in app app.router = new Router(); // router gets registered Backbone.history.start(); } return { initialize: initialize } }); messages.js define('MessageModel', ['underscore', 'backbone', 'App'], function(_, Backbone, App){ App.Message.Model; // registering the Message namespace with the Model class App.Message.Model = Backbone.Model.extend({ // the backbone stuff }); return App; }); Is this the right approach or am I fully on the wrong way (if yes please correct me!)

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  • Zend Framework: Zend_translate and routing related issue

    - by Dan
    I have implemented Zend_Navigation, Zend_Translate in my application. The routing is setup in Bootstrap.php like below. $fc = Zend_Controller_Front::getInstance(); $zl=new Zend_Locale(); Zend_Registry::set('Zend_Locale',$zl); $lang=$zl->getLanguage().'_'.$zl->getRegion(); $router = $fc->getRouter(); $route = new Zend_Controller_Router_Route(':lang/:module/:controller/:action/*', array( 'lang'=>$lang, 'module'=>'default', 'controller'=>'index', 'action'=>'index' )); $router->addRoute('default', $route); $fc->setRouter($router); $fc->registerPlugin( new Plugin_LanguageSetup()); in LaunguageSetup Plugin i have defined the dispatchLoopStartup method to do the checking of the language param public function dispatchLoopStartup(Zend_Controller_Request_Abstract $request) { $this->createLangUrl($request); $this->_language = $request->getParam('lang'); if ((!isset($this->_language)) || !in_array($this->_language, $this->_languagesArray)) { $this->_language = 'en_US'; $request->setParam('lang', 'en_US'); } $file = APPLICATION_PATH.$this->_directory.$this->_language.'.csv'; $translate = new Zend_Translate('csv', $file, $this->_language); Zend_Registry::set('Zend_Translate', $translate); $zl = Zend_Registry::get('Zend_Locale'); $zl->setLocale($this->_language); Zend_Registry::set('Zend_Locale', $zl); // $fc = Zend_Controller_Front::getInstance(); // $router = $fc->getRouter(); // $route = new Zend_Controller_Router_Route(':lang/:module/:controller/:action/*', array( // 'lang'=>$this->_language, 'module'=>'default', 'controller'=>'index', 'action'=>'index' // )); // $router->addRoute('default', $route); // $fc->setRouter($router); } What happen is the language always have the default value, the 'lang' param never default lang value in route, even if i type it in the address bar manually i.e /en_US/module/controller/action/ It always get revert back to the default Zend_locale(); Only way i can fix it is to setup the route again in the plugin and inject a correct language value as default. Any Idea why?

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  • Problem with Restlet on GAE

    - by Leaf
    I'm trying to implement a calculator web service on GAE using Java Restlets... it works perfectly fine on localhost but when I upload my project to the Google App Engine everytime I try the web service link it says the link is broken. Here's the code I used: public Restlet createInboundRoot() { // Create a router Restlet that routes each call to a // new instance of HelloWorldResource. Router router = new Router(getContext()); Restlet restlet = new Restlet() { public void handle(Request request, Response response) { // Print the requested URI path String parameters = request.getResourceRef().getRemainingPart(); String message; if(parameters.charAt(0)=='?'){ message = "" + Calculator.calculate(parameters.substring(1)); } else { message = ""; } response.setEntity(message, MediaType.TEXT_PLAIN); } }; // Defines only one route router.attachDefault(restlet); return router; } The Application it's on is mapped to the /calcservice but as I said when I upload to GAE it comes back with a broken link error. I'm developing on Eclipse 3.4 and I'm wondering if there are any parameters I have to change to include the Restlet classes.

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  • Setting routes in application.ini in Zend Framework

    - by Paul Watson
    I'm a Zend Framework newbie, and I'm trying to work out how to add another route to my application.ini file. I currently have my routes set up as follows: resources.router.routes.artists.route = /artists/:stub resources.router.routes.artists.defaults.controller = artists resources.router.routes.artists.defaults.action = display ...so that /artists/joe-bloggs uses the "display" action of the "artists" controller to dipslay the profile the artist in question - that works fine. What I want to do now is to set up another route so that /artists/joe-bloggs/random-gallery-name goes to the "galleries" action of the "artists" controller. I tried adding an additional block to the application.ini file (beneath the block above) like so: resources.router.routes.artists.route = /artists/:stub/:gallery resources.router.routes.artists.defaults.controller = artists resources.router.routes.artists.defaults.action = galleries ...but when I do that the page at /artists/joe-bloggs no longer works (Zend tries to route it to the "joe-bloggs" controller). How do I set up the routes in application.ini so that I can change the action of the "artists" controller depending on whether "/:gallery" exists? I realise I'm probably making a really stupid mistake, so please point out my stupidity and set me on the right path (no pun intended).

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  • Atheros AR928X wireless connection makes neighbourhood machine drop off line

    - by funicorn
    I have an Acer laptop with Atheros AR928X wireless card installed, supported by ath9k driver in the linux kernel. There are other 5 computers sharing wireless connection via a TPLink 150Mbit/s wireless router. At first I found the network is a little bit slower than it's in Windows7, which I accepted as it should be. However a very strange thing is, each time I connected to the router and downloaded stuff for a while, one of the computers running Windows7 in my local network dropped off from the router. And if I run my laptop under Windows7, everything is fine. What's even stranger is although the network becomes slower, only the certain computer drops and totally freezes in connection with the router. I'm not willing to conclude it's due to the unhealthy connection from my laptop to the router, however we have confirmed this for more than one times and there is no problem with the network when I'm running WIndows7. I'm extremely confused about what's going on. As a Linux user running Ubuntu over 5 years, I am awared that wireless driver in Linux is badly notorious of lack of stability and slow speed. But is it so bad that the unhealthy wireless connection can do damage to another computer in the same local network? I do see a lot of "Tx excessive retries" in iwconfig output. But how exactly does this happen ? Thanks for your help. I guess I have to use this answer box to show the outputs $ sudo iwconfig wlan0 IEEE 802.11bgn ESSID:"TP-LINK111" Mode:Managed Frequency:2.427 GHz Access Point: E0:05:C5:E8:A9:92 Bit Rate=121.5 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=47/70 Signal level=-63 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2 Invalid misc:23 Missed beacon:0 To show what's wrong with the wireless connection, I ran iwconfig again within 3 minutes, during which time I hardly did anything and the network was not much busy than being nearly idle $ sudo iwconfig wlan0 IEEE 802.11bgn ESSID:"TP-LINK111" Mode:Managed Frequency:2.427 GHz Access Point: E0:05:C5:E8:A9:92 Bit Rate=121.5 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=48/70 Signal level=-62 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:9 Invalid misc:28 Missed beacon:0 You can see Tx excessive retires and Invalid misc increase very quickly. $ sudo iwlist wlan0 modu wlan0 unknown modulation information. $ sudo iwlist wlan0 channel wlan0 13 channels in total; available frequencies : Channel 01 : 2.412 GHz Channel 02 : 2.417 GHz Channel 03 : 2.422 GHz Channel 04 : 2.427 GHz Channel 05 : 2.432 GHz Channel 06 : 2.437 GHz Channel 07 : 2.442 GHz Channel 08 : 2.447 GHz Channel 09 : 2.452 GHz Channel 10 : 2.457 GHz Channel 11 : 2.462 GHz Channel 12 : 2.467 GHz Channel 13 : 2.472 GHz Current Frequency:2.427 GHz (Channel 4)

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  • What does path finding in internet routing do and how is it different from A*?

    - by alan2here
    Note: If you don't understand this question then feel free to ask clarification in the comments instead of voting down, it might be that this question needs some more work at the moment. I've been directed here from the Stack Excange chat room Root Access because my question didn't fit on Super User. In many aspects path finding algorithms like A star are very similar to internet routing. For example: A node in an A* path finding system can search for a path though edges between other nodes. A router that's part of the internet can search for a route though cables between other routers. In the case of A*, open and closed lists are kept by the system as a whole, sepratly from any individual node as well as each node being able to temporarily store a state involving several numbers. Routers on the internet seem to have remarkable properties, as I understand it: They are very performant. New nodes can be added at any time that use a free address from a finite (not tree like) address space. It's real routing, like A*, there's never any doubling back for example. Similar IP addresses don't have to be geographically nearby. The network reacts quickly to changes to the networks shape, for example if a line is down. Routers share information and it takes time for new IP's to be registered everywhere, but presumably every router doesn't have to store a list of all the addresses each of it's directions leads most directly to. I'm looking for a basic, general, high level description of the algorithms workings from the point of view of an individual router. Does anyone have one? I presume public internet routers don't use A* as the overheads would be to large, and scale to poorly. I also presume there is a single method worldwide because it seems as if must involve a lot of transferring data to update and communicate a reasonable amount of state between neighboring routers. For example, perhaps the amount of data that needs to be stored in each router scales logarithmically with the number of routers that exist worldwide, the detail and reliability of the routing is reduced over increasing distances, there is increasing backtracking involved in parts of the network that are less geographically uniform or maybe each router really does perform an A* style search, temporarily maintaining open and closed lists when a packet arrives.

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  • Missing Setup->VLAN on DD-WRT Web GUI?

    - by leeand00
    Please note that I've already posted this question on the dd-wrt forums. I am using "DD-WRT v24-sp2 (08/07/10) std" on a WZR-HP-G300NH model Buffalo router. I've found a number of tutorials online that talk about using Setup-VLAN on the menu system of the GUI interface to configure VLANs, but on my own router, it appears that VLAN configuration is located elsewhere; mainly in the Setup-Networking-VLAN Tagging section of the GUI. I would gladly just use the bash shell to configure the vlans on the router, but every tutorial I read refers to "changing the gui to reflect the changes made in the bash prompt". Are there any tutorials or documentation that you are aware of that that refer to the Setup-Networking-VLAN Tagging GUI portion of my router?

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