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• diagnostic software for wifi adapter

  - by Nathan Fellman

  I'm having trouble with my wifi connection. Is there any software out there that can help me determine if the problem is in the drivers or in the hardware? Regretfully, I'm working on Vista Edit: The problem I'm having is that the Vista reports that the wireless radio is connected, shows an IP and all, the router also shows that the computer is connected, but there's no connectivity. I can't logon to the router, and I can't even ping it. When I ping it I get the response: General Failure I have tried connecting with and without various wireless security protocols. I have tried disabling the wireless adapter and re-enabling it from the Device Manager I have tried updating the driver None of this has helped. When I connect via Ethernet (with a cable, that is), everything works fine. Edit: I'm not using any firewall on the computer, that I'm aware of. The IP address for the WIFI adapter is similar to the one for the LAN adapter. They differ by one.

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• ipconfig /release not working, why?

  - by barlop

  ipconfig /release is not working, why is that? here is a sequence where I put my cable in get an IP, try ipconfig /release and it tells me it can't release wireless, but there is no wireless connection. i'm just trying to release the wired one. C:\>ipconfig Windows IP Configuration Ethernet adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Fine so I plug my cable in C:\>ipconfig Windows IP Configuration Ethernet adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 0.0.0.0 Subnet Mask . . . . . . . . . . . : 0.0.0.0 Default Gateway . . . . . . . . . : C:\>ipconfig Windows IP Configuration Ethernet adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 192.168.1.8 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.254 Fine so from above, it clearly has an iP C:\>ipconfig /release Windows IP Configuration No operation can be performed on Wireless Network Connection while it has its me dia disconnected. C:\>

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• Why is my iPhone WIFI so slow at home?

  - by John Fouhy

  When my iPhone is connected to my home wireless network, the internet is unusably slow. I installed the speedtest.net application; here are some results from tonight: Down: 0.0kB/s, Up: 0.0kB/s, ping: 2230ms Down: 2.5kB/s, Up: 40.5kB/s, ping: 2182ms Down: 0.0kB/s, Up: 20.0kB/s, ping: 197ms For comparison, here is the result from my iMac to the same server, which is on the same wireless network (and has no wired connection): Down: 139kB/s, Up: 53.8kB/s, ping: 182ms Neither my iMac nor the Dell laptop also on the network have experienced the wifi problems I get with my iPhone. On the other hand, I tried browsing a website on the wireless network at work with no problems. EDIT: SpeedTest at work gives me 156kB/s down. EDIT2: Girlfriend (owner of the Dell) reports actually the internet is sometimes very slow. Perhaps there is more going on. No problems with my iMac. My router is a ASUS WL-500g Premium V2 running OpenWrt Kamikaze with X-Wrt Extensions 8.09.

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• Can I use the Airport Express as a an uplink between two networks?

  - by Ant Swift

  I have two separate networks using different IP ranges, 192.168.0.* for the wired only, isolated network and 192.160.1.* for the wireless only network which is connected to the internet. The wired network has a network printer setup and working and I want to be able to share it out to members of the wireless network (see diagram below). In short I need some kind of uplink between the two networks. Currently running a cable is out since there is no suitable route. I have a spare Airport Express and I am wondering if I could attach it to the wired network and have it join the wireless and act as the uplink between the two. Anyone know if the device is capable of this?

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• Ubuntu, connecting to WLAN

  - by Holly

  Hello, I successfully installed Ubuntu onto my usb hard drive. However, I'm not sure what the issue is with my internet. I'm not familiar enough with ubuntu to know whether this is a problem with recognizing my wireless card or with my internet, etc. So I suppose my question is, how do I tell whether it's recognizing my wireless card? (Network manager isn't showing any wireless signals, though I wasn't sure if it was supposed to. ) And, if it's not working, how do I go about troubleshooting that issue? Thanks!

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• Computer Loses connection to router

  - by ajon

  I have a new Windows 8 Dell XPS desktop computer at work. It has a Dell Wireless 1703 802.11 b/g/n (2.4ghz) wireless adapter. sporadically throughout the day I lose internet connectivity. When I click on the wireless system tray icon, my companies router does not appear in the list. No other computer on the network is losing connection, only this one. I don't even know what to check. Could it be an ip conflict that causes me to get booted off? (I use DHCP), but why wouldn't my computer be able to see the network. The next time it happens I will see what happens when I try to access the router directly.

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• Ubuntu, connecting to WEP

  - by Holly

  Hello, I successfully installed Ubuntu onto my usb hard drive. However, I'm not sure what the issue is with my internet. I'm not familiar enough with ubuntu to know whether this is a problem with recognizing my wireless card or with my internet, etc. So I suppose my question is, how do I tell whether it's recognizing my wireless card? (Network manager isn't showing any wireless signals, though I wasn't sure if it was supposed to. ) And, if it's not working, how do I go about troubleshooting that issue? Thanks!

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• How to forward http traffic through a specific network adapter.

  - by user18129

  i have the following scenario. Two laptops are connected via a router through the Ethernet ports. These two computers need to be able to communicate together. One computer also needs to access the internet through a different adapter (i.e. we will taking these two laptops two various sites where by the most common type of internet access will be wireless).In isolation all of the various adapters work fine (i.e. the internal network works fine, and the wireless connects to the internet). However,we try to turn on all of the adapters at the same time,the following occurs: If we bridge the two network connections together on the "Server" -The internet connection doesn't work through the wireless If we don't bridge the connections The internet connections don't work It seems like http traffic is trying to be sent through the Ethernet adapter (which of course is not connected to an internet connection). How can we solve this?

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• routing problems

  - by user174050

  I have an windows 7 laptop and I have installed openvpn 2.2x as client. The laptop has 2 ethernet cards, one of them is wireless. The wireless lan is 192.168.1.0/24 The Fix lan is 192.168.2.0/24 If I connect to the openvpn server useing the Fix lan the I can connect properly and for testing I ping to my openvpn server 10.0.0.1 that answers correctly. But if I connect to the openvpn server useing the wireless lan, I can establish the connection but pinging to the server isn´t possible. The packets goes allways lost. Why can this happen? In an other laptop where windows xp is installed and with the same lan configuratio everything works propperly. In both cases the firewall is configured to access the vnc server and the server directories useing samba. With the XP I have no problems. I will thank you for all help Ignacio

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• list and explanations of ways to boost this router's signal strength? [closed]

  - by barlop

  Possible Duplicates: Improve Wireless Signal How to get wireless coverage over my whole house? What's the best way to increase the range of my 802.11g router? The back of my house doesn't have WiFi Signal I'm interested in ways that are both specific to certain routers, and generic. When I say generic, I don't necessarily mean a one way that works for many.. but it can also be a generic answer, so mentioning solutions for different situations. So not just the one router I mention. Explanations are important, as well as all the ways. One i'm particularly interested in boosting the strength of is this wireless router/modem Netgear VMDG280 maybe anywhere in a big house with three floors, maybe from the garden.

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• How do I set up a proxy server for home with bandwidth control, download limit options?

  - by Quakeboy

  3 room mates share a single 2 Mbps connection. Have a 40GB per month download limit beyond which speed drops to 256Kbps which is annoying. One of the roommates abuses the connection by downloading beyond his quota limit. I have a Netgear WNR1000v2 Wireless router + ADSL Modem to connect to the internet. We all access internet via Wireless router which connects to ADSL Modem. I need a free proxy solution which can help me set 40GB / 3 (13 GB) limit for each person (every person has 2 devices - a PC and a phone with Wifi) Uniform Bandwidth control - when 2 people browse the internet they should get 1 Mbps each, and when 3 people access, they should get 2Mbps divided by 3. After each person crosses their monthly download limit, they should be able to access the internet with 256Kbps speed only or lesser. Can I have a custom firmware on my wireless router do this (or) Do I need a proxy server ? Please point me to any relevant tutorials (for example with Squid).

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• Internet Connectivity... Help please!

  - by James

  Hi. My Laptop is having trouble connecting to my wireless router. Other laptops are using the wireless, but it's not reached capacity. The laptop recognises (with a strong signal) that there is wireless internet, and I can connect via the router with a cable because this happens automatically. My problem is this... When I click "connect" (for example in the network and sharing centre), the dialogue box closes and nothing else happens - as though "connect" is being read as "exit". I am running Vista on a Toshiba Satellite Pro P300. Any help would be very much appreciated, Thanks

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• unable to ping machine on WLAN

  - by N.M.

  I've started accepting remote desktop connections on one of my machines. If i connect the machine to my router using an Ethernet cable i am able to ping it and connect to it remotely (using RDP). However, if i connect the machine using wireless network i am unable to ping it (or access it using RDP). Although i can live with connecting that machine using an Ethernet cable i just wanted to know the reason why it doesn't work using wireless. Is the router not able to forward packets to that host if its connected using wireless? If yes, any solutions?

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• SQLite multi process access

  - by Nicolas

  Hello, We are using SQLite in a multi processes and multi threaded application. The SQLite database files are encrypted using the embedded SQLite encryption. The FAQ states that SQLite should be able to manage multi process accesses using locks mechanism. We are experiencing a strange problem: When many threads are accessing the same database file, sometime constrains violations occur, more specifically - a field with a unique constrain is getting duplicate values after calling "insert or replace" statement. It happens quite often now, that we are using the encryption. Before we started using SQLite encryption we did not notice such a behavior. Are there any specific known issues with this?

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• Convert VB6 Randomize to C#

  - by Thomas G. Mayfield

  I'm writing a C# frontend to a legacy database that uses VB6 Rnd() and Randomize() methods for user password encryption. The encryption function is very simplistic and really not all that secure, but it's what all current passwords are stored with. What I'd like to be able to do is authenticate legacy users from a C# application. I can write new encryption (or preferably hashing) code for VB6 so that all future users have a more secure password, and that can be duplicated in C#. But I don't want to require current users to have had their password reset before they can use the new frontend. Is there any way I can reimplement that algorithm in C# so that it produces identical results to the legacy VB6 code?

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• Subversion 1.6 + SASL : Only works with plaintext 'userPassword'?

  - by SiegeX

  I'm attempting to setup svnserve with SASL support on my Slackware 13.1 server and after some trial and error I'm able to get it to work with the configuration listed below: svnserve.conf [general] anon-access = read auth-access = write realm = myrepo [sasl] use-sasl = true min-encryption = 128 max-encryption = 256 /etc/sasl2/svn.conf pwcheck_method: auxprop auxprop_plugin: sasldb sasldb_path: /etc/sasl2/my_sasldb mech_list: DIGEST-MD5 sasldb users $ sasldblistusers2 -f /etc/sasl2/my_sasldb test@myrepo: cmusaslsecretOTP test@myrepo: userPassword You'll notice that the output of sasldblistusers2 shows my test user as having both an encrypted cmusaslsecretOTP password as well as a plain text userPassword passwd. i.e., if I were to run strings /etc/sasl2/my_sasldb I would see the test users' password in plaintext. These two password entries were created with the following subversion book recommended command: saslpasswd2 -c -f /etc/sasl2/my_sasldb -u myrepo test After reading man saslpasswd2 I see the following option: -n Don't set the plaintext userPassword property for the user. Only mechanism-specific secrets will be set (e.g. OTP, SRP) This is exactly what I want to do, suppress the plain text password and only use the mechanism-specific secret (OTP in my case). So I clear out /etc/sasl2/my_sasldb and rerun saslpasswd2 as: saslpasswd2 -n -c -f /etc/sasl2/my_sasldb -u myrepo test I then follow it up with a sasldblistusers2 and I see: $ sasldblistusers2 -f /etc/sasl2/my_sasldb test@myrepo: cmusaslsecretOTP Perfect! I think, now I have only encrypted passwords.... only neither the Linux svn client nor the Windows TortoiseSVN client can connect to my repo anymore. They both present me with the user/pass challenge but that's as far as I get. TLDR So, what is the point of SVN supporting SASL if my sasldb must store its passwords in plaintext to work?

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• Is TrueCrypt truly safe?

  - by Alfred

  Hi. I have been using TrueCrypt for a long time now. However, someone pointed me to a link that described the problems with the license. IANAL and so it really didn't make much sense to me, however I wanted my encryption software to be open source - not because I could hack into it but because I could trust it. Some of the issues with it I have noticed: There is no VCS for the source code. Is this OK? There are no change logs. The forums are a bad place to be. They ban even if you ask a genuine question. Who really owns TrueCrypt? There were some reports of tinkering with the md5 checksums. To be honest, the only reason why I used TrueCrypt was because it was open source. But however, somethings are just not right. Has anyone ever validated the security of TrueCrypt? Should I really be worried? Yes I am paranoid; if I use an encryption software, I trust it with all my life. If all my concerns are genuine, is there any other open source alternative to TrueCrypt?

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• Very slow write performance on Debian 6.0 (AMD64) with DMCRYPT/LVM/RAID1

  - by jdelic

  I'm seeing very strange performance characteristics on one of my servers. This server is running a simple two-disk software-RAID1 setup with LVM spanning /dev/md0. One of the logical volumes /dev/vg0/secure is encrypted using dmcrypt with LUKS and mounted with the sync and noatimes flag. Writing to that volume is incredibly slow at 1.8 MB/s and the CPU usage stays near 0%. There are 8 crpyto/1-8 processes running (it's a Intel Quadcore CPU). I hope that someone on serverfault has seen this before :-(. uname -a 2.6.32-5-xen-amd64 #1 SMP Tue Mar 8 00:01:30 UTC 2011 x86_64 GNU/Linux Interestingly, when I read from the device I get good performance numbers: reading without encryption: $ dd if=/dev/vg0/secure of=/dev/null bs=64k count=100000 100000+0 records in 100000+0 records out 6553600000 bytes (6.6 GB) copied, 68.8951 s, 95.1 MB/s reading with encryption: $ dd if=/dev/mapper/secure of=/dev/null bs=64k count=100000 100000+0 records in 100000+0 records out 6553600000 bytes (6.6 GB) copied, 69.7116 s, 94.0 MB/s However, when I try to write to the device: $ dd if=/dev/zero of=./test bs=64k 8809+0 records in 8809+0 records out 577306624 bytes (577 MB) copied, 321.861 s, 1.8 MB/s Also, when I read I see CPU usage, when I write, the CPU stays at almost 0% usage. Here is output of cryptsetup luksDump: LUKS header information for /dev/vg0/secure Version: 1 Cipher name: aes Cipher mode: cbc-essiv:sha256 Hash spec: sha1 Payload offset: 2056 MK bits: 256 MK digest: dd 62 b9 a5 bf 6c ec 23 36 22 92 4c 39 f8 d6 5d c1 3a b7 37 MK salt: cc 2e b3 d9 fb e3 86 a1 bb ab eb 9d 65 df b3 dd d9 6b f4 49 de 8f 85 7d 3b 1c 90 83 5d b2 87 e2 MK iterations: 44500 UUID: a7c9af61-d9f0-4d3f-b422-dddf16250c33 Key Slot 0: ENABLED Iterations: 178282 Salt: 60 24 cb be 5c 51 9f b4 85 64 3d f8 07 22 54 d4 1a 5f 4c bc 4b 82 76 48 d8 a2 d2 6a ee 13 d7 5d Key material offset: 8 AF stripes: 4000 Key Slot 1: DISABLED Key Slot 2: DISABLED Key Slot 3: DISABLED Key Slot 4: DISABLED Key Slot 5: DISABLED Key Slot 6: DISABLED Key Slot 7: DISABLED

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• Certificates in SQL Server 2008

  - by Brandi

  I need to implement SSL for transmissions between my application and Sql Server 2008. I am using Windows 7, Sql Server 2008, Sql Server Management Studio, and my application is written in c#. I was trying to follow the MSDN page on creating certificates and this under 'Encrpyt for a specific client', but I got hopelessly confused. I need some baby steps to get further down the road to implementing encryption successfully. First, I don't understand MMC. I see a lot of certificates in there... are these certificates that I should be using for my own encryption or are these being used for things that already exist? Another thing, I assume all these certificates are files are located on my local computer, so why is there a folder called 'Personal'? Second, to avoid the above issue, I did a little experiment with a self-signed assembly. As shown in the MSDN link above, I used SQL executed in SSMS to create a self-signed certificate. Then I used the following connection string to connect: Data Source=myServer;Initial Catalog=myDatabase;User ID=myUser;Password=myPassword;Encrypt=True;TrustServerCertificate=True It connected, worked. Then I deleted the certificate I'd just created and it still worked. Obviously it was never doing anything, but why not? How would I tell if it's actually "working"? I think I may be missing an intermediate step of (somehow?) getting the file off of SSMS and onto the client? I don't know what I'm doing in the least bit, so any help, advice, comments, references you can give me are much appreciated. Thank you in advance. :)

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• Ubuntu 13.10 - How to disable LVM and cryptsetup? cryptsetup: evms_activate is not available

  - by NeverEndingQueue

  I am trying to remove whole drive encryption from my Ubuntu installation. I've run Ubuntu from Live CD, mounted crypt partition and copied it to another partition /dev/sda3. sudo cryptsetup luksOpen /dev/sda5 crypt1 sudo dd if=/dev/ubuntu-vg/root of=/dev/sda3 bs=1M After that I've run boot-repair: https://help.ubuntu.com/community/Boot-Repair Added entry to /etc/fstab: UUID=<uuid> / ext4 errors=remount-ro 0 1 Of course I've replaced with blkid result of my /dev/sda3. I've also deleted overlayfs and tmpfs lines from /etc/fstab. (I've just compared it to content of /etc/fstab in non-encrypted Ubuntu installation and could not find overlayfs and tmpfs). I've chrooted from LiveCD into my system and rebuilt initramfs: http://blog.leenix.co.uk/2012/07/evmsactivate-is-not-available-on-boot.html I've also removed cryptsetup using apt-get remove. Basically I can easily mount my system partition from Live CD (without setting up the encryption and LVM stuff), but can not boot from it. Instead I see: cryptsetup: evms_activate is not available When I've chosen the Recovery mode I've seen this: Begin: Mounting root file system ... Begin: Running /script/local-top ... Reading all physical volumes. This may take a while ... No volume groups found cryptsetup: evms_activate is not available Begin: Waiting for encrytpted source device ... My /etc/crypttab is empty. I am pretty sure that system tries to find encrypted partition, search for LVMs etc. Do you have ideas what could be the problem or how can I fix it? Thanks

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• Windows - Decrypt encrypted file when user account is destroyed

  - by dc2

  I have a Virtual Machine running on my Windows Server 2008 computer that originally was received by me encryped, as the builder of the VM did it on a MAC, which decrypts files by default. I never thought to decrypt these files, as they automatically 'decrypt' when you have permission over them, so the VM has been running for over a year despite the encryption. I just upgraded my computer to Domain Controller (dcpromo.exe). Now when I try to access/run the VM, I can't because I don't have permission to decrypt the files as that was on another logon (local administrator) and now I am the domain administrator. Apparently the local admin is totally nuked when you upgrade to domain controller. I have tried EVERYTHING - taking ownership of the files, which works. Doesn't do anything for me. Adding full control to everyone on the files. I go to File Properties Advanced Details (under encryption) Users who can access this file. The only user is administrator@localcomputername, and there is a cert number. I try adding a new cert, I don't have permission. I don't have permission to: Decrypt the file (access is denied). Copy the file (to another computer) - access denied. I am totally stumped and this VM is a production machine and needs to get up right now. Does anyone have any ideas?

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• How to verify that a physical volume is encrypted? (Ubuntu 10.04 w/ LUKS)

  - by Bob B.

  I am very new to LUKS. During installation, I tried to set up an encrypted physical volume so that everything underneath it would be encrypted. I chose "Use as: physical volume for encryption," the installation completed and I have a working environment. How can I verify that the PV is indeed encrypted? I was never prompted to provide a passphrase, so I most likely missed a step somewhere. At the end of the day, I'd like whole disk encryption if that's possible, so I don't have to worry about which parts of the file system are encrypted and which aren't. If I did miss something, do I have to start over and try again, or can it be done (relatively easily?) after the fact? I would prefer not to introduce more complexity by using TrueCrypt, etc. Environment details: The drives are md raid1. One volume group. A standard boot lv. An encrypted swap lv using a random key (which seems to be working fine). Thank you in advance for your help. This is very much a learn-as-I-go experience.

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• GPG - why am I encrypting with subkey instead of primary key?

  - by khedron

  When encrypting a file to send to a collaborator, I see this message: gpg: using subkey XXXX instead of primary key YYYY Why would that be? I've noticed that when they send me an encrypted file, it also appears to be encrypted towards my subkey instead of my primary key. For me, this doesn't appear to be a problem; gpg (1.4.x, macosx) just handles it & moves on. But for them, with their automated tool setup, this seems to be an issue, and they've requested that I be sure to use their primary key. I've tried to do some reading, and I have the Michael Lucas's "GPG & PGP" book on order, but I'm not seeing why there's this distinction. I have read that the key used for signing and the key used for encryption would be different, but I assumed that was about public vs private keys at first. In case it was a trust/validation issue, I went through the process of comparing fingerprints and verifying, yes, I trust this key. While I was doing that, I noticed the primary & subkeys had different "usage" notes: primary: usage: SCA subkey: usage: E "E" seems likely to mean "Encryption". But, I haven't been able to find any documentation on this. Moreover, my collaborator has been using these tools & techniques for some years now, so why would this only be a problem for me?

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• How to connect devices behind Comcast router/modem with devices behind wireless router

  - by deeperDATA

  I know this is going to seem like a simple solution but I have been unable to find a clear answer through Google. Simple office setup: I have a Comcast modem/router that has 4 hard wired ports. In one of those ports I have a Cisco wireless router which also has 4 of its own ports. What is the method for getting devices behind the modem/router to ping/communicate with devices behind the wireless router? They are all on the same subnet but the IP ranges differ. The router produces 192.168.1.1 by default while the Comcast modem/router produces 10.1.10.1 by default. I think what I'm attempting to do might be considered "extending" the modem/router's network but I'm not sure. Thank you in advance for your assistance.

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• Wired and Wireless USB Network Adapter

  - by Evan M.

  Does anyone know if there are any USB network adapters out there that have both wired and wireless networking capability? Far-fetched, I know, but thought I'd ask. Background: Some of our users have locked down laptops that we also include unlocked virtual machines running on VMware Player. Sometimes the users have a need for network connectivity with their VMs where NAT and bridged networking from the host won't work. To supplement this, we want to supply them with adapters that they can use VMware USB pass through capabilities to provide appropriate connectivity. They will need both wired and wireless capability. Rather than carrying around 2 adapters, was hoping we could get a combination unit so that we can reduce it to 1. Thanks

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