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  • Networking works on Live CD but not after installation.

    - by user9054
    Hi Friends, I have got this issue with Ubuntu 10.10. I have been with ubuntu 8.04 and then decided to try out ubuntu 10.10 . I booted with a LiveCD and was able to configure the wireless network painlessly using the livecd, so happily I installed ubuntu 10.10. As soon as ubuntu came up it detected the wireless network and i was able to assign a static IP to eth1 (i dont use DHCP option on my ADSL router) and enter a wap key and use pppoeconf to configure the dialer. The net was on and i was able to surf the net. All hunky dory so far. However on the next boot the fun started . It did not detect the wireless network. I could not see the network manager icon in the systray. I used ifconfig and saw that the entry for eth1 was missing. I used ifup eth1 and it said that eth1 was already up. Then i installed wifi-radar. Wifi-Radar detected the wireless network. I configured wifi-radar for the detected wireless network , set the wap driver as wext and used the manual IP settings. However on clicking connect wifi-radar started looking for a DHCP IP. I cannot understand why wifi-radar is using DHCP when I have specified manual settings. Then I decided to use the wired network to surf the net looking for a solution. So I plugged in the network cable from my modem , configured eth0 , used pppoeconf and connected the net. Then I foolishly decided to reboot my PC. And wonders of wonders , the same problem appeared. I cannot see eth0 in my ifconfig anymore. I used pon and it said something about network error or something. Now my ifconfig shows only lo .Can anybody help me on this. PS : 1) I tried linux mint 10 and had the same issue . on rebooting wireless network was not getting detected. 2) I have made myself the administrator so that there is no issue of rights or anything.

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  • Languages/Methods to Learn for Scientific Computing?:

    - by Zéychin
    I'm a second-semester Junior working towards a Computer Science degree with a Scientific Computing concentration and a Mathematics degree with a concentration on Applied Discrete Mathematics. So, number crunching and such rather than a bunch of regular expressions, interface design, and networking. I've found that I'm not learning new relevant languages from my coursework and am interested in what the community would recommend me to learn. I know as far as programming methods go, I need to learn more about parallelizing programs, but if there's anything else you can recommend, I would appreciate it. Here's a list of the languages with which I am very experienced (web technologies omitted as they barely apply here). Any recommendations for additional languages I should learn would be very much appreciated!: Java C C++ Fortran77/90/95 Haskell Python MATLAB

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  • Complete Math Library for use in OpenGL ES 2.0 Game?

    - by Bunkai.Satori
    Are you aware of a complete (or almost complete) cross platform math library for use in OpenGL ES 2.0 games? The library should contain: Matrix2x2, Matrix 3x3, Matrix4x4 classes Quaternions Vector2, Vector3, Vector4 Classes Euler Angle Class Operations amongh the above mentioned classes, conversions, etc.. Standardly used math operations in 3D graphics (Dot Product, Cross Product, SLERP, etc...) Is there such Math API available either standalone or as a part of any package? Programming Language: Visual C++ but planned to be ported to OS X and Android OS.

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  • Books for Computer Networking

    - by Altimet Gaandu
    Hi, I am a student of computer engineering from Vasula University, Somalia. We have a subject called Advanced Computer Networks and the following is the list of recommended books: Text Books: 1. B. A. Forouzan, "TCP/IP Protocol Suite", Tata McGraw Hill edition, Third Edition. 2. N. Olifer, V. Olifer, "Computer Networks: Principles, Technologies and Protocols for Network design", Wiley India Edition, First edition. References: 1. W.Richard Stevens, "TCP/IP Volume1, 2, 3", Addison Wesley. 2. D.E.Comer,"TCP/IPVolumeI and II", PearsonEducation. . 3.W.R. Stevens, "Unix Network Programming", Vol. 1, Pearson Education. 4. J.Walrand, P. Var~fya, "High Performance Communication Networks", Morgan Kaufmann. . 5. A.S.Tanenbaum,"Computer Networks", Pearson Education, Fourth Edition. But we have been unable to find these either in the market or on the internet (read: torrents). Please provide download links to any of these books and oblige. Thanks.

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  • Tunnel into Sonicwall VPN while on Sonicwall wifi?

    - by Patrick Harrington
    Hey all, I am able to hit my company's VPN while I am at home using a dedicated IP with no issue. When I am at work, the VPN we use (a Sonicwall router/VPN/wifi access point), I can get outside internet fine, but am unable to connect to the VPN. I know that the wifi puts me on a different subnet, and when I try to connect to the normal VPN IP it won't work, and a traceroute just times out. Any suggestions? Might there be an internal IP I need to hit while here at work?

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  • Setting up Edimax EW-7206APg as Universal Repeater

    - by Ondra Žižka
    Hi, I've troubles setting up Edimax EW-7206APg as a Universal Repeater. I've read few manuals, but they are unclear on certain points. I've managed the repeater to get to a state when it's in a "connected" state. I've set the same WPA passphrase as the router has because I haven't seen any other place to set it at. These are my settings: System Uptime 0day:1h:33m:11s Hardware Version Rev. A Runtime Code Version 1.32 Wireless Configuration Mode Universal Repeater ESSID edimax Channel Number 6 Security WPA-shared key BSSID 00:c0:9f:40:bd:38 Associated Clients 0 Wireless Repeater Interface Configuration ESSID Dusan Security WPA BSSID 00:4f:62:23:8f:7e State Connected LAN Configuration IP Address 192.168.0.10 Subnet Mask 255.255.255.0 Default Gateway 192.168.0.1 MAC Address 00:c0:9f:40:bd:37 This is ipconfig /all: Prípona DNS podle pripojení . . . : riomail.cz Popis . . . . . . . . . . . . . . : Intel(R) PRO/Wireless 2200BG Network Connection Fyzická Adresa. . . . . . . . . . : 00-0E-35-3D-77-68 Protokol DHCP povolen . . . . . . : Ano Automatická konfigurace povolena : Ano Adresa IP . . . . . . . . . . . . : 192.168.0.5 Maska podsíte . . . . . . . . . . : 255.255.255.0 Výchozí brána . . . . . . . . . . : 192.168.0.1 Server DHCP . . . . . . . . . . . : 192.168.0.1 Servery DNS . . . . . . . . . . . : 94.74.192.252 94.74.192.244 I can ping the repeater, I can ping the root AP, but not a DNS server or any other IP beyond the root AP. Anyone has an idea what's wrong? Thanks, Ondra

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  • Wifi not working after a few minutes

    - by drtanz
    I'm using a few MacBooks and iPads connected to a router via WiFi. The problem is that a few minutes after they connect via WiFi the connection stops working. This happens on all devices. I went into the router settings by connecting via cable and everything seems in order. Connecting a laptop via cable to the router I can use internet as normal, the problem is only with WiFi. What can be the problem here? Here are the connected clients Connected Clients MAC Address Idle(s) RSSI(dBm) IP Addr Host Name Mode Speed (kbps) 14:10:9F:F3:48:D6 1 -36 192.168.0.5 Jeans-Air n 78000 14:99:E2:C6:41:10 1 -36 192.168.0.8 JeanGaleasiPad n 24000 Here's the router event log Mon Dec 30 04:12:30 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A)... Mon Dec 30 04:12:25 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:5) -... Mon Dec 30 02:17:56 2013 Notice (6) WiFi Interface [wl0] set to Channel 40 (Side-Band Channel:36)... Mon Dec 30 02:16:04 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:7) ... Mon Dec 30 01:59:26 2013 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A)... Mon Dec 30 01:59:22 2013 Notice (6) WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:2) -... Sun Dec 29 23:27:51 2013 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A)... Sun Dec 29 23:27:49 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A... Sun Dec 29 14:32:55 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Sat Dec 28 13:08:19 2013 Error (4) DHCP REBIND WARNING - Field invalid in response ;CM-MAC=1c:3e... Fri Dec 27 18:10:19 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Fri Dec 27 16:08:55 2013 Error (4) Map Request Retry Timeout;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Thu Dec 26 21:08:53 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:7) ... Thu Dec 26 20:43:50 2013 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A... Tue Dec 24 12:45:03 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Dec 24 04:55:52 2013 Error (4) Map Request Retry Timeout;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:32:00 2013 Notice (6) TLV-11 - unrecognized OID;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:32:00 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=1c:3e:... Mon Dec 23 12:32:00 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=1c:3e:... Mon Dec 23 12:32:00 2013 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC... Mon Dec 23 18:32:02 2013 Notice (6) Honoring MDD; IP provisioning mode = IPv4 Mon Dec 23 18:31:10 2013 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=1c:3e:84:f1... Mon Dec 23 18:28:57 2013 Critical (3) Received Response to Broadcast Maintenance Request, But no Un... Mon Dec 23 18:28:25 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Mon Dec 23 12:17:48 2013 Notice (6) TLV-11 - unrecognized OID;CM-MAC=1c:3e:84:f1:6b:84;CMTS-MAC=0... Mon Dec 23 12:17:48 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=1c:3e:... Mon Dec 23 12:17:48 2013 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=1c:3e:... Mon Dec 23 12:17:48 2013 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC... Mon Dec 23 18:17:48 2013 Notice (6) Honoring MDD; IP provisioning mode = IPv4 Mon Dec 23 18:16:58 2013 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=1c:3e:84:f1... Mon Dec 23 18:16:15 2013 Critical (3) Received Response to Broadcast Maintenance Request, But no Un... Mon Dec 23 18:15:43 2013 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...

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  • netsh add profile returns "An attempt was made to load a program with an incorrect format."

    - by Tunisia
    Using netsh, I used the following command to add a wireless profile add profile filename="c:\profiles\DLINK-Profile.xml" interface="D-Link DWA-125 N150" All parameters are valid. But I get the error "An attempt was made to load a program with an incorrect format." I know this error is related to OS architecture 64bit or 32 bit. But i'm not sure which program is not compatible. I'm using Win7 64bit

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  • Configure a wireless network that accepts any WPA2-PSK network key

    - by Michel
    I recently bought a UART WiFi module ( this one ) and configured it with right SSID but wrong password( and I don't know what it is ). The problem is that I can't reset this module to its manufacture settings and I can't connect to this module via serial port to configure it with some wire or cable. But I'm sure that my module is trying to connect my access point but with wrong network key ( because in logs of my access point I can see my module that trying to connect but it can't ) So, I wonder to know is there any way to create or configure a network (using some access point or something else) based on WPA2 Personal security that accepts any WPA2-PSK passwords ? Or is there any other solution for this problem ? If no, is there anyway to see what password this module using to connect to that network ? ( If yes, then I can change password of my network to that password and access to this module's admin panel ) I tried create an open network ( without any security key ) but my module just searches for WPA2 based networks ( I think ).

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  • Wifi as LAN - Is it possible ? How ?

    - by sagar
    Hello ! Every one. I am having a query regarding WiFi network. I am having PC & LapTop. Now, Let me explain the situation. I requested My WiFi providers that I want connection in my PC. So that - WiFi provider set up an Antenna on my building Terrace - They joined a cable to pc & that Antenna. ( I think using RJ45 connector ) - The reason behind this - my pc is not having inbuilt wifi functionality. Now - almost laptops have inbuilt functionality. Now - On terrace there is wifi with superb speed. But on my flat - wifi comes with low speed. so, when ever I use internet on my pc - it has great speed - but my laptop works with low speed. The reason behind this - PC is catching wifi from terrace & laptop is catching the wifi from it's own place. Now, My question is something like this. Can we place an antenna or something like that & connect it to laptop for better wifi speed? ( I am not technical person - Please add comment for down vote - if any ) ( Please add comment for more explanation of my Problem ) Thanks in advance for sharing your knowledge. Sagar

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  • Recommended ADSL/ADSL2 router that supports PPTP VPN dial-out, 802.11n and gigabit ethernet?

    - by Throlkim
    I'm looking for a new router to provide a VPN tunnel for my home network. My plan is to pass all internet traffic over a PPTP VPN provided by the router, which should ensure that the connection stays alive and only passes traffic over that protocol. I'm normally quite a fan of Draytek routers, and their 2710n does seem to feature VPN dial-out but it lacks Gigabit ports (though I can make do with that if the VPN support is good enough). Has anyone got any suggestions or personal experience in a similar setup? I'm happy to consider anything that supports dd-wrt (as I believe that supports VPN-out, though I may be wrong). Bonus points for models available in the UK.

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  • What's a good, affortable router that will not give me problems when downloading torrents?

    - by Lirik
    I found several routers on newegg and they're in the $50-60 range, but I'm not sure if they'll handle the number of connections that are created when downloading torrents (100-300 seeds and around 50 peers). My roommate watches netflix movies, my brother and I download torrents, so my NETGEAR router ends up choking on the traffic and I have to restart it quite frequently. I've already posted a couple of questions on the topic and I've come to the conclusion that I need a new router. What are some routers that I should consider (my budget is in the $50 range)?

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  • Time Machine + Ubee Router?

    - by Charlie
    I can't for the life of me figure this out. I recently had TWC installed in my house, and wanted to disable the NAT and router functions of it. I have a Time Machine hooked up to it from LAN1 (on the Ubee) to the WAN port on the TM. The problems started occurring here. I figured the settings would be these: Ubee Configuration mode: Bridge DHCP: Off TM IPv4: 192.168.100.2 Subnet Mask: 255.255.255.0 Router Address: 192.168.100.1 DNS Servers: 8.8.8.8, 8.8.4.4 Router Mode: DHCP and NAT But using those settings, my TM says "Double NAT", so I have to change it all around to the default settings of the Ubee using NAT. This leads me to believe bridge mode doesn't actually turn off NAT...

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  • DD-WRT Router acting as a Switch and Wi-Fi AP

    - by dotnetchris
    Recently I upgraded to Comcast Business and their modem has a built-in router so I took off my DD-WRT router and moved to a location in my home where I needed more ports and Wi-Fi (preferably without running new Ethernet cables since it's 50-100 foot run through floor and ceilings). I have my network cable from my Comcast modem going into Port 1 of my DD-WRT router with Port 2 and 3 being networked PCs. I have DD-WRT setup as a DHCP forwarder with the firewall disabled. This lets my all of my devices access the network fine. Is the correct the way to do this? Or is this a less optimal solution and it should be done in a slightly different way?

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  • IPCop server slows down download speed

    - by noocyte
    I have an IPCop server running at home, been doing just fine for ~5 months, but last week I suddenly started getting time-outs and slow downloads from the 'net. I first thought that this was my ISP acting up, then I thought it might be one of my 3 switches or some of my cabling. In due order I've tested everything above and found them all to be working as they should. The only factor remaining is my IPCop server. Facts: I've got a 15/15 Mbit line (fiber) and I get ~15 Mbit upload, but only 0.5 Mbit download with the IPCop box as router (ISP router set in bridge mode). If I connect without the IPCop box (using the ISP router) I get ~12 Mbit upload and ~15 Mbit download. The load on the IPCop box appears to be light and it used to handle this traffic just fine 2 weeks ago. The memory usage is ~60%, I tried to restart it and test again, the memory fell to ~50% then (5 months of uptime). I'm thinking that one of my nics are busted, but I'm sort of perplexed that this could be the outcome; slow download but full speed upload. Anybody ever seen that happening before? Could it just be one of the nics that needs to be replaced? Will try that as soon as I can get my hands on a couple of new ones.

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  • Can't connect to LAN when connected to D-Link DIR-615

    - by Senseful
    I'm have a D-Link DIR-615 Wireless N 300 Router. I didn't use the CD it comes with to set up the network. Instead I configured it manually through the router's settings that are accessed via a web browser. The main changes I made are: Secured the router so that a password is required before clients can use the wireless internet. Broadcasting 802.11N only (not B or G). I can connect to the router just fine and I'm able to access the internet. The only problem is that I don't see any of the other computers in my LAN. When I try connecting to another Wi-Fi router that I have (which is connected to the same network), I can see all of the computer's on my LAN just fine. Therefore, I'm guessing that the reason I can't connect to the LAN is not a problem with my computer and is a problem with the router instead. I'm on a MacBook Air running Mac OS X 10.6.6. I tried contacting D-Link technical support, but they only try to help you if you have problems connecting to the internet. They aren't really concerned with problems that have to do with the accessing PC's on the same network.

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  • How do I get more information on a potential network freeloader?

    - by Dov
    I have a home network set up, complete with a relatively good password. I'm in Mac OS X 10.6 (Snow Leopard) and have been noticing, on occasion, a computer showing up in my Finder's Shared section, that is not one of my own (the "pe-xpjalle" box pictured below). He has a tendency to come and go. How can I figure out his MAC address or something, so I can block him? I checked my "Logs and Statistics" in the Airport Utility, and didn't see that computer under DHCP clients. I'd rather not change my password, since I have quite a few devices I'd have to update. Is there any other reason he's show up on my network besides having guessed my password? Update: I fixed the Dropbox URL above (how embarrassing, I'm new to Dropbox. Thanks for the heads up, Doug.) Update 2: I tried clicking on "Connect as..." just for the hell of it, and got the dialog below. Now I have even less an idea what's going on than before. I don't have Parallels of VMware running, just the following: Transmission, NetNewsWire, Mail, Things, Safari, iTunes, Photoshop, Pages, Yojimbo, Preferences, AppleScript Editor, Software Update, Airport Utility, and Terminal. I don't think any of those create a virtual network machine, right? And no VMware machine of mine has ever had a name resembling "pe-xpjalle". Update 3: I just changed my passwords on both my N- and G-only networks, and I'm still seeing this, so I highly doubt that it's someone who's figured out my password (twice now). I'm really stumped.

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  • UDP multicast streaming of media content over WIFI

    - by sajad
    I am using vlc to stream media content over wireless network in scenario like this (from content streamer to stream receiver client): The bandwidth of wireless network is 54 Mb/s and UDP stream's required bandwidth is only 4 Mb/s; however there is trouble in receiving media stream and quality of playing specifically in multicast mode; means I can play the stream but it has jitter and does not play smoothly. In uni-cast I can stream up to 5 media streams correctly, but in multicast mode there is problem with streaming just one media! However when I stream from client some multicast streams; the wifi access-point can receive data correctly and I can see the video in "udp streamer" side correctly even when number of multicast streams increases to 9; But as you see I want to stream from streaming server and receive media in client size. Is this a typical problem of streaming real-time contents over wireless networks? Is it necessary to change configurations of my WIFI switch or it is just a software trouble? thank you

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  • Poor home office network performance and cannot figure out where the issue is

    - by Jeff Willener
    This is the most bizarre issue. I have worked with small to mid size networks for quite a long time and can say I'm comfortable connecting hardware. Where you will start to lose me is with managed switches and firewalls. To start, let me describe my network (sigh, shouldn't but I MUST solve this). 1) Comcast Cable Internet 2) Motorola SURFboard eXtreme Cable Modem. a) Model: SB6120 b) DOCSIS 3.0 and 2.0 support c) IPv4 and IPv6 support 3-A) Cisco Small Business RV220W Wireless N Firewall a) Latest firmware b) Model: RV220W-A-K9-NA c) WAN Port to Modem (2) d) vlan 1: work e) vlan 2: everything else. 3-B) D-Link DIR-615 Draft 802.11 N Wireless Router a) Latest firmware b) WAN Port to Modem (2) 4) Servers connected directly to firewall a) If firewall 3-A, then vlan 1 b) CAT5e patch cables c) Dell PowerEdge 1400SC w/ 10/100 integrated NIC (Domain Controller, DNS, former DHCP) d) Dell PowerEdge 400SC w/ 10/100/1000 integrated NIC (VMWare Server) 4) Linksys EZXS88W unmanaged Workgroup 10/100 Switch a) If firewall 3-A, then vlan 2 b) 25' CAT5e patch cable to firewall (3-A or 3-B) c) Connects xBox 360, Blu-Ray player, PC at TV 5) Office equipment connected directly to firewall a) If firewall 3-A, then vlan 1 b) ~80' CAT6 or CAT5e patch cable to firewall (3-A or 3-B) c) Connects 1) Dell Latitude laptop 10/100/1000 2) Dell Inspiron laptop 10/100 3) Dell Workstation 10/100/1000 (Pristine host, VMWare Workstation 7.x with many bridged VM's) 4) Brother Laser Printer 10/100 5) Epson All-In-One Workforce 310 10/100 5-A) NetGear FS116 unmanaged 10/100 switch a) I've had this switch for a long time and never had issues. 5-B) NetGear GS108 unmanaged 10/100/1000 switch a) Bought new for this issue and returned. 5-C) Linksys SE2500 unmanaged 10/100/1000 switch a) Bought new for this issue and returned. 5-D) TP-Link TL-SG10008D unmanaged 10/100/1000 a) Bought new for this issue and still have. 6) VLan 1 Wireless Connections (on same subnet if 3-B) a) Any of those at 5c b) HP Laptop 7) VLan 2 Wireless Connection (on same subnet if 3-B) a) IPad, IPod b) Compaq Laptop c) Epson Wireless Printer Shew, without hosting a diagram I hope that paints a good picture. The Issue The breakdown here is at item 5. No matter what I do I cannot have a switch at 5 and have to run everything wireless regardless of router. Issues related to using a switch (point 5 above) SpeedTest is good. Poor throughput to other devices if can communicate at all. Usually cannot ping other devices even on the same switch although, when able, ping times are good. Eventual lose of connectivity and can "sometimes" be restored by unplugging everything for several days, not minutes or hours but we're talking a week if at all. Directly connect to computer gives good internet connection however throughput to other devices connected to firewall is at best horrible. Yet printing doesn't seem to be an issue as long as they are connected via wireless. I have to force the RV220W to 1000Mb on the respective port if using a Gig Switch Issues related to using wireless in place of a switch (point 5 above) Poor throughput to other devices if can communicate. SpeedTest is good. Bottom line Internet speeds are awesome. By the way, Comcast went WAY above and beyond to make sure it was not them. They rewired EVERYTHING which did solve internet drops. Computer to computer connections are garbage Cannot get switch at 5 to work, yet other at 4 has never had an issue. Direct connection, bypass switch, is good for DHCP and internet. DNS must be on server, not firewall. Cisco insists its my switches but as you can see I have used four and two different cables with the same result. My gut feeling is something is happening with routing. But I'm not smart enough to know that answer. I run a lot of VM's at 5-c-3, could that cause it? What's different compared to my previous house is I have introduced Gigabit hardware (firewall/switches/computers). Some of my computers might have IPv6 turned on if I haven't turned it off already. I'm truly at a loss and hope anyone has some crazy idea how to solve this. Bottom line, I need a switch in my office behind the firewall. I've changed everything. The real crux is I will find a working solution and, again, after days it will stop working. So this means I cannot isolate if its a computer since I have to use them. Oh and a solution is not throwing more money at this. I'm well into $1k already. Yah, lame.

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  • Static DHCP!?

    - by voyager
    I've found some home wireless routers/ADSL+ modems (ZyXEL 660) talking about Static DHCP, when refering to assosiating a specific MAC to an IP, but still serve the configuration over DHCP. Doesn't this have another name? What does Cisco call this feature (that I know supports because I've used long time ago)?

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  • Configure IPv6 routing

    - by godlark
    I've got IPv6 addresses from SIXXS. My host is connected with SIXXS network over a AICCU tunnel ("sixxs" interface). My host address is 2001:::2, the host on the end has address 2001:::1. On my host IPv6 is fully accessible. I have problem with configuring IPv6 network on VMs. I use VirtualBox, the VM (Ubuntu) uses tap1 (on the host bridged by br0) #!/bin/sh PATH=/sbin:/usr/bin:/bin:/usr/bin:/usr/sbin # create a tap tunctl -t tap1 ip link set up dev tap1 # create the bridge brctl addbr br0 brctl addif br0 tap1 # set the IP address and routing ip link set up dev br0 ip -6 route del 2001:6a0:200:172::/64 dev sixxs ip -6 route add 2001:6a0:200:172::1 dev sixxs ip -6 addr add 2001:6a0:200:172::2/64 dev br0 ip -6 route add 2001:6a0:200:172::2/64 dev br0 Host: routing table: 2001:6a0:200:172::1 dev sixxs metric 1024 2001:6a0:200:172::/64 dev br0 proto kernel metric 256 2001:6a0:200:172::/64 dev br0 metric 1024 2000::/3 dev sixxs metric 1024 fe80::/64 dev eth0 proto kernel metric 256 fe80::/64 dev sixxs proto kernel metric 256 fe80::/64 dev br0 proto kernel metric 256 fe80::/64 dev tap1 proto kernel metric 256 default via 2001:6a0:200:172::1 dev sixxs metric 1024 Guest: interface eth1 (it is connected with tap1): auto eth1 iface eth1 inet6 static address 2001:6a0:200:172::3 netmask 64 gateway 2001:6a0:200:172::2 Guest: routing table 2001:6a0:200:172::/64 dev eth1 proto kernel metric 256 fe80::/64 dev eth0 proto kernel metric 256 fe80::/64 dev eth1 proto kernel metric 256 default via 2001:6a0:200:172::2 dev eth1 metric 1024 The guest pings to the host, the host pings to the guest, the host pings to 2001:6a0:200:172::1, but the guest doesn't ping to 2001:6a0:200:172::1. The guest tries to ping, on the host (by tcdump) I can capture its packets, but the host doesn't send them to 2001:6a0:200:172::1. What have I missed in configuration?

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  • Manage Internet connection for a program

    - by michel
    I am using a Windows 7 PC with 2 network cards. One for a public line and one for an internal line behind a proxy. Is there a way or a software program where I can manage which program (Outlook, WM) uses which Internet connection or network card? Using the option of interface metric is not what I am looking for. Someone also suggested me ZoneAlarm, but I dislike this program.

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  • diagnostic multicast issue using wireshark

    - by Abruzzo Forte e Gentile
    I have a network that is setup for multicast traffic. My setup is the following -Machine A : a server generates multicast traffic. -Machine A : few clients subscribing to that multicast traffic -Machine B : few clients subscribing to that multicast traffic # Address I am using IP : 239.193.0.21 PORT: 20401 The clients in machine A , even if they join the group (I can see IGMP messages through wireshark), don't receive any data while (and this is the funny part) machine B,C and D receive everything. I sorted that issue by completely disabling Linux firewall. Before doing that, I enabled the multicast on the firwall ('reject all'). iptables -A INPUT -m addrtype --src-type MULTICAST -j ACCEPT My question is the following: what I can check in wireshark that can help me in spot such firewall issues in the futures? For TCP/IP I realize by using ping and looking at ICMP packets rejected. What I can check/monitor for multicast? I am using LInux/Red-Hat Enterprise 6.2

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