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  • Setting up a router as a DNS server only

    - by Jacob R
    I have a Linksys WRT54GL router that I don't need anymore, since I had to buy a 3G capable router (Dovado 3GN). As I only have a 3G connection at home, I want to optimize it as much as possible. I want to setup a caching DNS server, including some blacklisting of ad domains. The router currently runs the DD-WRT firmware. Is it possible to use this router as an ordinary computer, running only a DNS server, disabling all other features such as DHCP, WLAN, etc? Connecting it to my other router, should I simply run a cable into the WAN-port of the Linksys router?

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  • Packet loss with all adapters on one PC only on the LAN

    - by Enigmativity
    I have a Windows 7 64-bit machine that is losing up to 20% of IP packets on both adapters - wireless & LAN. Browser traffic appears to be affected the most, but it is happening to all protocols. All other computers on the network are functioning fine. If I ping from my faulty machine to any machine on the LAN (wired or wirelessly), including the router/gateway and internet sites, I get up to 20% packet loss. If I do the following commands: ipconfig /release ipconfig /renew then I sometimes get my network performance back for a matter of a few seconds to less than a couple of minutes. Rebooting also works for a short period of time. This problem has been occurring for a couple of months and is getting worse. The computer used to work just fine. I updated the wireless adapter firmware the other day with no effect. Does anyone know what is happening?

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  • iMac invalid memory access and then crash?

    - by Sam McAfee
    My iMac G5 from a few years ago (the square white one) dies now, with a message about an invalid memory access. It goes straight to an Open Firmware prompt and doesn't even load the Mac OS at all. Am I correct in guessing that the memory is probably the issue, and that if I replace it, we may be able to boot again as normal? That's my gut feeling anyway, so I ordered some more memory and plan to swap it today. Any thoughts? Ideas?

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  • S.M.A.R.T - Predictive Failure Count

    - by Bastien974
    I'm monitoring my IBM ServeRAID M5015 controller for RAID status with MegaCLI, I have this on one of the disk : Enclosure Device ID: 252 Slot Number: 6 Enclosure position: 0 Device Id: 14 Sequence Number: 2 Media Error Count: 32 Other Error Count: 0 Predictive Failure Count: 18 Last Predictive Failure Event Seq Number: 8119 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.464 GB [0x22cee000 Sectors] Firmware state: Online, Spun Up SAS Address(0): 0x5000c50042c319c9 SAS Address(1): 0x0 Connected Port Number: 5(path0) Inquiry Data: IBM-ESXSST9300653SS B6336XN04HC10525B633 IBM FRU/CRU: 81Y9671 FDE Capable: Not Capable FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :33 Celsius What does this mean exactly ? I can't find an exact description, is there a way to have more details ? The RAID array has the Optimal state. Media Error Count: 32 Predictive Failure Count: 18 Is there a way through the CLI to power-on the front LED so I physically know which disk I need to replace ?

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  • Building uEFI bootable ISO and USB for Windows 7 deployment

    - by Darragh
    I have been trying to build up a window's 7 and 2k8 EFI deployment ISO or USB. But struggling to to even get an ISO to boot from even VMware Workstation EFI implementation. The problem is there is no clear requirement to what the EFI bootloader is looking for, "e.g EFI boot file" even ISO's and USB's that are bootable don't find the required .efi file. I'd like to know what is the process EFI bootloader follows to boot the EFI file. e.g; in a EFI windows system its; C:\Windows\Boot\EFI\bootmgfw.efi From DVD it's; F:\efi\microsoft\boot\cdboot.efi from what people tell me it's on USB; G:\efi\boot\bootx64.efi (bootmgfw.efi renamed) I've been testing on a HP notebook with EFI 2.0 and VMware Workstation 8.0 with .vmx file firmware = "efi"

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  • How can I fix my WRT54GL's constant crashing?

    - by Aarthi
    I have a Linksys WRT54GL wireless router (the old blue-and-black) whose underside indicates it is Version 2. I've noticed that, on wireless mode, if I am on a Skype call or in a Google Hangout, the wireless aspect will crash completely. In addition, if I am connected via an ethernet cord, my quality (that is, how my voice is received) tanks very quickly. I suspect this is due, in part, to my internet connectivity itself (I'm on Comcast instead of Verizon FiOS, as I'd prefer) but I'd like to stop my wireless router's wireless capability from crashing. I considered a firmware upgrade, but it looks to me as if I am upgraded. Short of manually running ethernet all over my house, I'm not sure what to do. How can I solve my wireless router's issues? If the answer is "buy a new router," then that's valid, as well, in my opinion.

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  • Does WD Drive Lock encrypt the data?

    - by ssg
    I wonder if WD Drive Lock ineed encrypts the data on a Western Digital My Book Essential device or just puts a firmware-level password on the device. If it's just a password the data surely could be retrieved by a third party. I could not find anything on about that on user manuals. I found a blog saying "data is secured with AES256" bla bla but that doesn't say anything about if the password could be compromised or not. Because I don't see any delays when I add/remove the password. On the other hand when I enable BitLocker, it takes hours before it encrypts everything with my password.

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  • Issues with non-HP harddisk in HP ML 350 server?

    - by Torben Warberg Rohde
    I'm looking to buy some extra disk space for a HP ML 350 G5 server. It is for simple file-serving - not OS/system stuff. HP harddisks are insanely expensive, so I'm tempted to buy some other brand instead. I have heard that they sometime use special firmware on their disks, but I suspect that might just be HP spreading rumors to sell disks. Does anyone have experience using non-HP disks? Any features not working, or not being able to build the RAID at all? I'm looking at 2.5" SAS Seagate drives - Constellation 500 GB (7.2k) or Savvio 600 GB (10k).

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  • Windows 7 Locks Up or Blue Screens after installing additional hard drive

    - by Ryan
    I've had my home theater pc for over a year now and it's been running with no problems what so ever. I got myself a new Seagate 2 TB hard drive for the holidays and ever since installing it the pc now randomly locks up or blue screens either upon putting it to sleep or waking it from sleep. The only thing I've tried so far is updating the firmware on the hard drive. The hard drive in question is this one (http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4846365). I do have my minidump file saved off on my home theater pc however right now I'm at work and don't have access to it. Please help! Thank you!

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  • Port based bandwidth shaping

    - by nixnotwin
    I have an interent connection with the speed of 4000k bits up and down. I want to do port based traffic shaping on a ubuntu machine, which acts as router. eth0 is the WAN interface. This is how I would like to allocate bandwidth: For ports 80 and 445 the bandwidth usage can go upto 90% For ports above 1024 upto 65535 the bandwidth usage can go upto 10% For remaining ports the bandwidth usage can go upto 40% The easiest way for achieving the above is using a router with tomato firmware. I have used it and it is very efficient. I want to try if it can be done on a Ubuntu or any GNU/Linux machine. I have googled extensively about the topic and I feel there isn't much information.

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  • Wireless DHCP doesn't work until wired Ethernet plugged in

    - by MT_Head
    A client of mine has an Asus R1F tablet running Windows XP Tablet SP3. It has an Intel 3945ABG wireless card; wired Ethernet is a Realtek something-or-other. In the past few days, it's developed an odd problem: WiFi authenticates, but can't get an address via DHCP. plug in wired Ethernet - both interfaces get good addresses unplug cable, WiFi continues to work until shutdown. Next morning, repeat process. I've tried: turning WiFi off/on (there's a slider switch) disabling/re-enabling via Device Mangler uninstalling and reinstalling the driver for the 3945ABG... changing from Intel Pro/SET to Windows Wireless Zero Config (and back) restarting the router changing the static DHCP assignments at the router upgrading the router firmware, just on general principles The router/access point is pfSense 1.2.3RC1 (was 1.2.2); wireless card is Atheros-based. None of the 12 other users (5 with tablets) are having problems.

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  • WLAN LED randomly blinking when there is no traffic

    - by mrc
    Hi, I've got a Linksys WUSB54GC WLAN USB interface (Ralink chipset) and I'm running Debian GNU/Linux 6.0. The LED very often randomly blinks although there is no traffic in the network. I checked this with Wireshark. Sometimes, but rarely, the LED stops blinking. The issue is present in Ubuntu and Fedora too. It was not present in Debian Lenny with Linux 2.6.28. I checked an old live cd with ubuntu 8.10 with kernel 2.6.27 and it was also OK. So I guess that's an issue with Linux kernel and its wireless driver or firmware. Has anybody observed a similar thing? Does anybody know how to help this annoying blinking? Thanks.

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  • How to prevent partial crash during VLAN configuration on a HP ProCurve 3500

    - by vm370
    as you can see from my question, I have a VLAN configuration problem with a ProCurve3500. The goal is to remove a VLAN from the existing configuration, however when I use the WEB UI to do this, I cannot modify ports to be assigned to a different VLAN or the Default VLAN. I always get the message "config failed", which is not very helpful. When I try to do it over telnet, the router somehow partially crashes and somehow the utilization on all ports is at 100% and I can barely use the web ui. After a reboot everything is fine again, but the configuration was not changed... The traffic after this partial crash looks like a broadcast storm, however there are definitely no loops in the segment. I also updated to the latest stable firmware, but the problem persists. Thanks a lot in advance Br vm370

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  • Wi-Fi connection drops when downloading torrents, but wired connection still works

    - by bryan
    After downloading for an hour or so, the Wi-Fi connection on my tablet stops working; forcing me to restart my router(it basically hangs when trying to connect). This only happens when downloading torrents. WIRED connection on my desktop PC with router still works fine; no issues at all. I tired to lower the number of global connections to 50, but I still have the problem. I have also updated to the latest Linksys firmware. One PC, a tablet and a smartphone. I have COX cable. Please let me know if you need any other info. Thank you!

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  • Traffic shaping & monthly traffic limit in Tomato?

    - by Matt H
    Is there a way to do a monthly traffic limit in Tomato, DDWRT or OpenWRT in addition to the regular QoS? This is for a house with several students sharing the internet. I.e. for a specific IP address, IP Range or MAC address, the firmware will count the download traffic for that month. When a configurable limit is set, it'll either limit it to say 64kbit/s up/down or drop all traffic and maybe redirect web traffic to an internal web server telling them that they have exceeded their quota. How can this be done with those firmwares?

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  • Web browsing is fast, but downloads are slow

    - by Ricket
    I work for a company on my university's campus, helping with general IT problems and some web development. But lately there has been a problem that has me and my boss completely stumped. We, plus one contractor, make up the entire IT department, so I'm reaching out to you for help. All around the office, we have wall jacks. These collect in a closet down the hall and all plug into a switch. This switch, along with our individual server jacks, plugs into another switch, and that switch plugs into our firewall hardware. Then the firewall is connected out to our campus network. Our campus internet is, well, very fast. I don't know exactly the terms, tiers, etc., but we have thousands of students and downloads can run as fast as 10 MB/s at night; uploads are sometimes even faster. I think we're practically ISP level. In short, I have a lot of faith that it is not the campus side of things that is causing a problem, combined with other evidence I'll mention in a moment. So our symptoms: web browsing is fast. Web pages, images, etc. load instantly. No problems there. But then when I go to download something, the download starts fast but very quickly (a matter of seconds) drops to nearly 0. Often it will actually drop to 0 and time out. This happens with even very small files, 1 MB or less. It smells to me like a QoS sort of thing. I'm not entirely sure, and I wanted to get your opinions first. My boss is hesitant to touch our firewall, much less let me touch it, and it was set up and is managed by a consultant remotely. These problems don't seem tied to a time of the day. I've tried downloads after 5:00 and still the same thing happens. From my desk, I can turn on my wireless adapter and pick up the campus wireless access point. If I unplug ethernet and connect to it, downloads are fast. This adds to my suspicion that it's limited to our company network. Also, a number of weeks ago the consultant upgraded our firewall firmware. Suddenly everything was very fast. I tested with downloads from Sun and speedtest.net and things were blazing fast, as they should be with our campus internet! It was wonderful, and I figured the slow speeds were an old firmware bug. In a matter of days, things steadily declined until they were back to the old symptoms. Oh, and we have antivirus installed on every computer, and we keep it up to date. Though I suppose the possibility is still there that someone could have spyware which is bogging down our internet, in which case what is the easiest/best way to find this out? (maybe this should go in a separate question) Thank you for your patience in reading all of this. Do you have any ideas as to what I can try? Is this something that you've experienced before? What sort of tools or methods can I use to try and diagnose the problem? P.S. everything here is Windows. Windows Server 2003 and 2008 on our servers, and Windows XP on employees' machines. Update: We are submitting a ticket to the university to just take a look and see if they see anything unusual and/or can suggestion methods for us to try and pinpoint our problem. Hopefully they'll be helpful! I'll update this to let you know what goes on. Update again: We found a hub (yes, a HUB) right between our campus connection and our firewall. It had only those two ethernet cables plugged into it, nothing else. After removing the hub, our speeds have jumped up to several mbps. However in talking with the campus, we got them to run a gigabit line to our firewall in place of the 100mbps line. As of friday, we are at about 65 mbps up and down (according to speedtest.net at 8am)!! Go NC State!!

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  • My D-Link's Ethernet bridge downlink just got 10-30x slower?

    - by Jay Levitt
    TL;DR: I unplugged my network to move my desk, and now downloading via my DIR-655's Ethernet LAN bridge is 10-30x slower than the Ethernet switch it's plugged into. Background My network is SMC cable modem <-> Cisco firewall <-> Netgear switch <-> D-Link WiFi† | | | | SMC8014 ASA-5505 GS608v2 gigE DIR-655 rev A3 gigE †The DIR-655 is used as an access point, not a router (although what D-Link calls an access point, I'd call a bridge). The "WAN" port is unused; the Netgear connects to the built-in 4-port Ethernet LAN switch, inside the built- in router/firewall. Endpoints: MacBook Pro 17" mid-2010 iPhone 4S Fedora 12 Linux server running reasonably fast dual-Athlon X2, VelociRaptors, etc. All cables are <10 feet, mostly CAT-5e, some CAT-6, all premade. All WiFi endpoints are within three feet of the D-Link. Yesterday I unplugged and rearranged stuff, and now connecting via the D-Link - even through the wired switch, right next to the incoming network cable - is 30x slower than connecting directly to the Netgear switch, on both my MacBook and iPhone. How I'm measuring "slower" I'm mostly using http://speedtest.net, which of course only really measures broadband speeds. I've also installed http://www.speedtest.net/mini.php on my local server, but can't test the iPhone with that. Results Speedtest.net, closest server over Comcast business-class: CONFIG | PING (ms) | DOWN (Mbps) | UP (Mbps) Mac <-> Ethernet <-> Netgear | 9 | 31.6 | 6.8 Mac <-> Ethernet <-> D-Link | 8 | 4.1 | 6.0 Mac <-> WiFi <-> D-Link | 9 | 1.4 | 2.9 iPhone <-> WiFi <-> D-Link | 67 | 0.4 | 1.6 Speedtest Mini on Linux PC: CONFIG | DOWN (Mbps) | UP (Mbps) Mac <-> Ethernet <-> NetGear | 97.2 | 76.9 Mac <-> Ethernet <-> D-Link | 8.2 | 24.2 Mac <-> WiFi <-> D-Link | 1.0 | 8.6 Slow typing in SSH: Mac <-> Ethernet <-> Netgear <-> Linux PC: smooth Mac <-> Ethernet <-> D-Link <-> Linux PC: choppy Note that D-Link upload speeds are normal on broadband, slower locally (but I'd believe that's a D-Link limitation), and always faster than the downloads! Since ssh is choppy just with slow typing, I don't believe it's a throttling-type problem either; that's not a lot of bandwidth. What I've tried Swapping all "good" and "bad" cables Re-plugging "bad" cable from D-Link to Netgear and watching it be the "good" cable pulling cables away from power lines Verify that the Mac auto-detects the D-Link as gigE Try to verify the link speed of the D-Link <- Netgear connection, but the firmware doesn't report that Verify that the D-Link sees no TX/RX errors or collisions Use different Ethernet ports on both Netgear and D-Link Reset the D-Link to factory settings Upgrade the D-Link firmware from 1.21 to 1.35NA, 2010/11/12, the latest Reboot everything at least once On the Mac, disable Wi-Fi during the Ethernet tests, and unplug Ethernet during the Wi-Fi tests Using iStumbler, verify that the D-Link isn't picking overloaded Wi-Fi channels (usually just 1-5 neighbors on my and adjacent channels, average for my apt building) Verify that the only client connected to the Wi-Fi was the iPhone Verify that nothing was being chatty on my network according to the WISH log Enable and disable all sorts of D-Link settings, including forcing WAN auto-detect to gigE So. I don't mind buying a new access point—I wouldn't mind having a dual-link network—but as a guy who's been networking since gated v4 was a drastic rewrite, and who often used physical sniffers in the days before Wireshark, I'm baffled. I hate being baffled. What could I possibly have changed that would result in this? How can I measure it? All I can think of is a static zap—thick carpet, socks, HVAC—but I didn't feel one, and does that really happen anymore? Can I test if it's Ethernet vs. TCP layer slowness? I'm not familiar with modern network utilities; it's hard to Google without hitting "Q: Why is my network slow? A: Is your microwave on?" If I don't get an answer here, will someone big and powerful help me migrate it to serverfault without getting screamed back here? In the words of Inigo Montoya, "I must know." Don't get all Dread Pirate Roberts on me.

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  • How to set up raid monitoring on a Adaptec AAC-RAID on a Dell?

    - by pjz
    I've got Debian on a Dell with an Adaptec RAID: AAC0: kernel 4.1-0[7417] AAC0: monitor 4.1-0[7417] AAC0: bios 4.1-0[7417] AAC0: serial 4edf09 scsi2 : aacraid Vendor: CERC Model: DATA 1 Rev: V1.0 Type: Direct-Access ANSI SCSI revision: 02 Vendor: CERC Model: Data 2 Rev: V1.0 Type: Direct-Access ANSI SCSI revision: 02 I've got it set up using the fine afacli tool (ick). Is there a way to get it to email me when there's an error? Do I need to hand-roll a script for this? what's the right version of the afacli tool to use? v4.1 gets SIGABRT and exits after I ask it to 'container list' or 'enclosure list' v2.8's enclosure commands don't work either Do I need to upgrade firmware? to what? from where? how?

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  • How to erase a SSD to restore factory performance in Linux?

    - by Andy B
    Due to big performance issues with an mdraid-1 array I'd like to pull down from the array one of the devices (Samsung 840 Pro), erase it to restore factory performance and re-add it to the array. The reason I want to do this to one of the SSDs is because the poor performance seems to be related to one specific SSD out of the two (although they are the same brand, model and firmware ver). But how do I erase a SSD from Linux? I mention that hdparm indicates that both drives are frozen at this time. Maybe because they are part of an md array? Thanks in advance!

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  • Problem with bios update on Intel S3420GP

    - by wurlog
    I am using the Intel Develepment Assistant CD, but after choosing the newest update I can see a red text but just for a second. Afterwards it tells me to reboot, but it is still the same bios version as before. I can't find access the error message. The whole software seams to be a linux. Maybe I can access a console and look into the log files?? Or are there other solutions to update the bios? EDIT: I tried to download the bios/firmware update packages (using it via network share, because the usb stick wouldn't work), but the software wont use it.

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  • LinkSys WRT54GL + AM200 in half-bridge mode - Setup guide recommendations?

    - by Peter Mounce
    I am basically looking for a good guide on how to set up my home network with this set of hardware. I need: Dynamic DNS Firewall + port-forwarding VPN Wake-on-LAN from outside firewall VOIP would be nice QoS would be nice (make torrents take lower priority to other services when those other services are happening) DHCP Wireless + WPA2 security Ability to play multiplayer computer games I am not a networking or computing neophyte, but the last time I messed with network gear was a few years ago, so am needing to dust off knowledge I kinda half have. I have read that I should be wanting to set up the AM200 in half-bridge mode, so that the WRT54GL gets the WAN IP - this sounds like a good idea, but I'd still like to be advised. I have read that the dd-wrt firmware will meet my needs (though I gather I'll need the vpn-specific build, which appears to preclude supporting VOIP), but I'm not wedded to using it. My ISP supplies me with: a block of 8 static IPs, of which 5 are usable to me a PPPoA ADSL2+ connection

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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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  • How do UEFI and virtual machines relate to each other?

    - by Iterator
    I am trying to get my head around UEFI (Unified Extensible Firmware Interface) and it's not entirely clear to me how this affects virtual machines. Thus, there are three parts to this question: Is UEFI an advance in hardware support for virtualization? All other things being equal, would a machine with UEFI be more likely to run a virtual machine more efficiently than one without, or does UEFI cause any performance hits that negate any speed improvements from a virtual machine? Would the difference in execution be visible to code running in a virtual machine? (In theory, it shouldn't, but in practice?)

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  • Port forwarding through a client bridge

    - by Gabe Tanenhaus
    I am having a problem with port forwarding with a client bridge. My main router is a 2wire router from AT&T using their firmware. It is a Router/Modem. In my room, there is a Linksys WRT54GL with DD-WRT on it. I have set up the DD-WRT one as a Client bridge for my PC. I can access the internet on my computer using it but when I try and port forward, the ports stay closed. I am port forwarding on my main router (2wire) and it doesn't work. I have checked online and all I see is that I should only need to forward on the main router since the client bridge has NAT disabled, but it seems to not work that way. Any ideas?

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  • Can dd-wrt or tomato keep track of GB usage per billing period per device?

    - by Sam Hasler
    I want to be able to track the usage of each device connecting to our router so we can split up the ISP bill by usage. Can dd-wrt or tomato provide the stats I'd need to do this? Update: After a bit of googling I'm aware of a much better answer than the current one. However I suspect there's probably more answers out there for other firmwares so in the interests of getting a more diverse set of answers—­and, I'll admit, because I'm getting tired of reading through obtuse firmware documentation—I've put up a bounty. If the only answer added is the one I've found I'll be happy to accept it for the bounty, otherwise I'll add it and accept it myself, but I'm hoping for an even better answer, or at least some options for other firmwares as from looking I've seen a few other people have asked for this and there doesn't appear to be a definitive answer, let's make this it! Go lazywebs! (Sorry. I've always wanted to say that.)

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