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  • How secure is encryption?

    - by Stomped
    Let me preface this by saying I know nothing about encryption. I understand the basic concept of public key / private key encryption but I don't how easily it can be broken, if at all. If one were to believe the movies, encrypted data can be broken by a teenager with a decent computer in a few hours. I have a client who wants credit card information sent via email - encrypted of course, but I'm still not feeling terribly good about the idea. I feel it would be safer to store the info on the VPS, but even then its an unmanaged server and there's nobody watching it who knows much about security. So can anyone tell me if there's a safe way to store and/or send this data out? Thanks

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  • How do I get a Belkin F5D8053 wireless adapter working?

    - by disassembler
    I've tried getting my Belkin N Wireless adapter to work on Ubuntu many times with no luck at all. Each time I seem to arrive at a dead end. After some thorough searching of UbuntuForums and WifiDocs I've gathered some information and narrowed the problem down to an issue with the rtl819xU driver. Here's some info that may help: $ sudo lshw -C network *-network DISABLED description: Wireless interface physical id: 1 bus info: usb@1:2 logical name: wlan0 serial: 00:22:75:38:52:ac capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl819xU multicast=yes wireless=802.11b/g/n $ sudo lsmod Module Size Used by vesafb 13449 1 snd_ice1724 106559 2 snd_ice17xx_ak4xxx 13163 1 snd_ice1724 snd_ac97_codec 105614 1 snd_ice1724 ac97_bus 12642 1 snd_ac97_codec snd_ak4xxx_adda 18436 2 snd_ice1724,snd_ice17xx_ak4xxx snd_ak4114 14326 1 snd_ice1724 snd_pt2258 12986 1 snd_ice1724 snd_i2c 13831 2 snd_ice1724,snd_pt2258 snd_ak4113 14307 1 snd_ice1724 snd_pcm 80244 4 snd_ice1724,snd_ac97_codec,snd_ak4114,snd_ak4113 fglrx 2434640 121 snd_seq_midi 13132 0 snd_rawmidi 25269 2 snd_ice1724,snd_seq_midi binfmt_misc 13213 1 snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event ppdev 12849 0 snd_timer 28659 2 snd_pcm,snd_seq snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq dcdbas 14054 0 r8192u_usb 297246 0 snd 55295 16 snd_ice1724,snd_ac97_codec,snd_ak4xxx_adda,snd_ak4114,snd_pt2258,snd_i2c,snd_ak4113,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 12600 1 snd parport_pc 32111 1 snd_page_alloc 14073 1 snd_pcm shpchp 32345 0 lp 13349 0 parport 36746 3 ppdev,parport_pc,lp usbhid 41704 0 hid 77084 1 usbhid e100 40108 0 floppy 60032 0 $ sudo iwconfig wlan0 802.11b/g/n Mode:Managed Access Point: Not-Associated Bit Rate:1 Mb/s Retry min limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=0/100 Signal level=0 dBm Noise level=0 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I'd like to know if 1) Is the driver is properly installed and recognized by Ubuntu? 2) What can I do to load the drivers properly and make use of the adapter? Thanks!

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  • How to connect to a wireless network that has a two word name with a space?

    - by grinan
    Ok, I have searched for some time in earnest for an answer to this question. I have a Beagleboard which has Ubuntu 10.10 Minimal install for Arm running on it. With the default install, minimal tools, no GUI, I am unable to connect to my wireless network. The name of my network is "MYNAME NETWORK". Using a text editor to edit /etc/network/interfaces I can not seem to connect at all. As an experiment, I connected to a friends network, which has a one word name "dystek",and was able to connect with Zero issues, and update and install a full GUI for ubuntu Arm. The problem is that I don't want a full blown gui on the beagleboard, just a minimal install of ubuntu with CLI is all I need or want. Is there anyway to connect to my wireless network via editing the /etc/network/interfaces file. Surely there is... I just don't know how. Right now my interfaces file looks like this: auto lo iface lo inet loopback auto wlan0 iface wlan0 inet static address 192.168.1.200 netmask 255.255.255.0 gateway 192.168.1.1 wireless-essid BARRETT NETWORK wireless-key 46456xxxxxxxx Any help would be appreciated.

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  • Using PHP Encryption for Login Authentication

    <b>Webreference:</b> "Following up on "Implementing One-way Encryption in PHP," my previous tutorial about using one-way encryption to build a secure online diary application, this article explores using PHP encryption for login authentication."

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  • I'm confused about encryption and SSL

    - by ChowKiko
    while my friends and I planning to run our own website, we're confused about the encryption where hackers can TAPPING or in social engineering it's WIRE TAPPING, but I don't know how do they call it in Computers today... Well guys, I just want to know how encryption works with websites if we are using PHP+MYSQL? Is it ok to use user login ---- (PHP) encrypt inputted value then (PHP) will decrypt and validate it going to (MySQL) user login ---- (PHP) encrypt inputted value and decrypt the (MySQL) data if they are similar... Is it similar if we use $_SESSION without encryption inside PHP going to MySQL?or PHP encryption also helps the manipulation of binaries?..I'm so confused T_T... In regards to what I stated above, can a hacker hook the data if the server uses $_SESSION? Is $_SESSION safe?... IF THE HACKER CAN HOOK it? is it necessary to use SSL on our website? and why do some Merchandise websites use SSL and likewise facebook also uses SSL? what is the best suit for you if there is no SSL? encrypting the DATA using PHP going to MySQL or even without encryption while the PHP server uses $_SESSION?...

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  • Transparent Data Encryption

    Transparent Data Encryption is designed to protect data by encrypting the physical files of the database, rather than the data itself. Its main purpose is to prevent unauthorized access to the data by restoring the files to another server. With Transparent Data Encryption in place, this requires the original encryption certificate and master key. It was introduced in the Enterprise edition of SQL Server 2008. John Magnabosco explains fully, and guides you through the process of setting it up.

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  • Cannot access certain URL on my wireless

    - by dehmann
    Problem: On my wireless network at home, there is one URL that I just cannot access with my browser: http://research.microsoft.com/ I have no problems with the Internet connection otherwise. But on that address I just get The connection was reset The connection to the server was reset while the page was loading. from Firefox. I am using a DSL modem (Westell) and Linksys wireless router (using DHCP). When I use my neighbor's wireless connection I can access the microsoft site without a problem. Additional technical details: But with my connection, here is what I get from nslookup. It is weird: It first cannot find the address, but after I look up another address it can find it: $ nslookup research.microsoft.com ;; connection timed out; no servers could be reached $ nslookup google.com Non-authoritative answer: Name: google.com Address: 72.14.204.104 Name: google.com Address: 72.14.204.147 Name: google.com Address: 72.14.204.99 Name: google.com Address: 72.14.204.103 $ nslookup research.microsoft.com Non-authoritative answer: Name: research.microsoft.com Address: 131.107.65.14 But even after nslookup finds it Firefox still cannot access it. Here is what traceroute says: $ traceroute http://research.microsoft.com/ traceroute: Warning: http://research.microsoft.com/ has multiple addresses; using 8.15.7.117 traceroute to http://research.microsoft.com/ (8.15.7.117), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 4.515 ms 2.760 ms 3.072 ms 2 * * * Traceroute just to the IP: $ traceroute 131.107.65.14 traceroute to 131.107.65.14 (131.107.65.14), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 11.912 ms 2.684 ms 2.808 ms 2 * * * Comparison: Traceroute to google.com IP: $ traceroute 72.14.204.99 traceroute to 72.14.204.99 (72.14.204.99), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 6.428 ms 6.981 ms 117.099 ms 2 * * * Any comments / help?

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  • Instant connection to wireless network but delayed internet access on Mediacom with Windows 7

    - by David
    I have Mediacom cable internet and their provided modem/wireless router a Cisco DPC3825. Each of the laptops experiencing the trouble have Windows 7 64-bit. When connecting to the wireless network each computer will take a second or two to connect and then toggle from "no internet access" to "internet access" however, no websites are accessible for about five minutes after connecting. After that, there aren't any problems. It happens on all 3 of the laptops I have available and none of them have problems on any other network. It seems like my phone doesn't have the delay issue when it connects. I've power cycled the modem/router along with a DNS flush. I have some of the DNS servers manually set to Google DNS addresses and one just default. I've contacted and had Mediacom support try all its tricks. They changed the SSID and password along with resetting the thing remotely a handful of times. It was installed just this month and seemed to pass the tech's checks upon installation. Nothing in the settings has been changed, but it's been exhibiting this problem from the get go. This guy seems to be having the same problem, but no solution was posted. http://www.dslreports.com/forum/r27372861-IA-Connection-to-Mediacom-wireless-Modem-no-internet- Help greatly appreciated.

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  • Connect to WEP Wireless Network by command line on Ubuntu

    - by Tim
    Hi, I am a newbie to both network and Linux. I am now trying to connect to a WEP wireless network by command line on my Ubuntu 8.10, because the Network Manager does not support 64 bit WEP. (1) I firstly bring down the Network Manager and then try to connect to a wireless network, whose essid is candy and password is 5673212741. But it fails as shown in the following. I wonder why and how to do it correctly? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwconfig wlan0 essid candy opendo iwconfig wlan0 key 18018ce78e open $ sudo iwconfig wlan0 key 5673212741 open $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 9971 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 No DHCPOFFERS received. No working leases in persistent database - sleeping. $ ping www.bbc.co.uk ping: unknown host www.bbc.co.uk (2) A less important question: why the scan for wireless networ does not work after I bring down the Network Manager? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down Thanks and regards!

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  • Connecting to unsecured wireless network

    - by Sanchez
    I would like to know what information is public and can be intercepted in a non-open, but unsecured wireless network. Moreover, is there anything I can do to make it more "secure", other than using https connection whenever possible. In more details, I recently discovered (with surprise) that the wireless network in my school is actually unsecured. Although not everyone can connect to it (you need a student ID), I am told that certain softwares like Wireshark would be able to intercept the data. Since I have been using the network for all private purposes (email, facebook etc), I do feel quite insecure now and would like to understand the situation a bit better. I installed Wireshark and tried to play with it but all I can see are something alien to me. In any case, all I see seems to come directly/indirectly from my IP address, and I have long thought that usually different computers in the same wireless network would be assigned different addresses. Am I wrong? If not, then I feel very confused about what information is actually being captured (potentially by other users in the network, since I don't think I could capture activities of others in the same network anyway), and whether it's safe to use the network at all. (Gambling on others in the same network showing good behaviour is apparently not an option.) Thank you.

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  • How To Monitor Home Wireless Network Connected Devices Bandwith

    - by GWLlosa
    (Originally posted on SuperUser, not sure if it might be better suited here) I have in my home a standard Comcast cable internet connection. I have it going from the wall to a cable modem, and from the modem to a late-series Linksys router, which provides wired and wireless networking. The vast majority of the users are wireless connections. For day-to-day tasks, this connection is fully sufficient for all my needs. However, on regular occassions, we have social gatherings that involve many people bringing laptops and other PCs and using the network and internet simultaneously, frequently for gaming. I have no administrative oversight over these machines; they have been known to be riddled with spyware and/or bloatware or be running torrents, legal or otherwise. The only reason I care is that on a regular basis, one of the machines will flatline my internet bandwith, and consume it all in order to upload/download/spam people/whatever. When this happens, the latency of the connections for gaming and the like becomes unacceptable, and everyone suffers. My question is: Is there a system I can set up whereby I can easily monitor the various systems connected to my wireless connection, see how much bandwith each one is using, and for what ends? That way, at a glance, I can spot the offending machine and kick it from the connection, without having to go from machine to machine, checking each one's "bandwith used" properties manually, and dealing with the owner's indignant protests all the while. I understand this will likely involve 3rd-party software and/or hardware; my issue is I don't even know where to begin.

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  • Configuring WPA WiFi in Ubuntu 10.10

    - by sma
    Hello, I am trying to configure my wireless network on my laptop running Ubuntu 10.10 and am having a bit of difficulty. I am a complete Linux newb, but want to learn it, hence the reason I'm trying to set this up. Here's the vitals: It is a Gateway 600 YG2 laptop. It was previously running Windows XP, but I installed Ubuntu 10.10 in place of it (not a dual boot, I removed XP altogether). I have an old wireless card that I'm trying to resurrect. I haven't really used the card in a couple years, but it seems to still work, I just can't connect to my home's wireless network. The card is a Linksys WPC11 v2.5. When I plug it in, Ubuntu recognizes the network, but won't connect to it. My home network uses WPA encryption and the only connection type that Ubuntu's network manager is giving me is WEP and then it asks for a key -- I have no idea what that key should be. So, basically, I'm asking, is there a way I can instead connect through WPA? I've tried creating a new connection in network manager, but that won't work, it keeps falling back to the WEP connection and asking me for a key. I have tried to install the XP driver using ndiswrapper but I don't know if that's working or not. Is there a way to tell if: A) the card is working as it should B) the correct drivers are installed (again, I installed the XP one using ndiswrapper NET8180.INF, but I'm not sure what to do next) Any help would be appreciated. Thank you.

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  • Can't find PC on network

    - by Simon Verbeke
    I just got myself a new laptop, and set it up. It is connected to the wireless internet in my home. I then wanted to create a homegroup between the laptop and my desktop, but they can't find each other. Probably because the desktop has a wired connection to the router and the laptop is connected to a wireless access point. The router and the AP are connected to a switch in the middle by cable. A sketch of the network: Laptop - - - Wireless Access Point ----- Switch ----- Router ----- Desktop ^ ^ ^ ^ Wireless Wired Wired Wired They both point to the same gateway and DHCP-server (on 192.168.0.1). And I can ping to that address from both PCs. When I try to ping either of the PCs the pings time out. The subnets are also the same (255.255.255.0) and the IPs are in the same range (192.168.0.114 laptop, 192.168.0.205 desktop). So I don't really understand what I need to do to be able to access either computer from the other. The weird thing is that Synergy (to use mouse and keyboard over the network) works, just by using the IPs assigned to both PCs. The acces point is a linksys WAP54g, but I'm unsure of the Router, it has a custom casing from our ISP and hides any clues for identifying the product. I'm going to google a bit so I can add that info later. Both PC's are Windows 7 64 bit. The desktop is Ultimate, the laptop Professional.

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  • Could anyone help me get my NETGEAR WNA3100 (Broadcom BCM43231) wireless adapter to work?

    - by Matthew Carroll
    I have just moved back to Ubuntu from Windows 7 and a few months ago, I bought a NETGEAR WNA3100 wireless adapter because my old adapter had broken. I plugged in my adapter and it doesn't seem to work, I also used the windows 7 drivers for it and tried them on the program "Windows Wireless Drivers" and they don't seem to recognize the device. However I have heard you need XP drivers but I can't seem to find them on the internet nor find them on the CD. Could anyone help me get my wireless adapter to work? Any help is greatly appreciate. P.S I do have internet connection though I have to tether my phone to my computer and then connect my phone to my router.

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  • Compute the AES-encryption key given the plaintext and its ciphertext?

    - by Null Pointers etc.
    I'm tasked with creating database tables in Oracle which contain encrypted strings (i.e., the columns are RAW). The strings are encrypted by the application (using AES, 128-bit key) and stored in Oracle, then later retrieved from Oracle and decrypted (i.e., Oracle itself never sees the unencrypted strings). I've come across this one column that will be one of two strings. I'm worried that someone will notice and presumably figure out what those two values to figure out the AES key. For example, if someone sees that the column is either Ciphertext #1 or #2: Ciphertext #1: BF,4F,8B,FE, 60,D8,33,56, 1B,F2,35,72, 49,20,DE,C6. Ciphertext #2: BC,E8,54,BD, F4,B3,36,3B, DD,70,76,45, 29,28,50,07. and knows the corresponding Plaintexts: Plaintext #1 ("Detroit"): 44,00,65,00, 74,00,72,00, 6F,00,69,00, 74,00,00,00. Plaintext #2 ("Chicago"): 43,00,68,00, 69,00,63,00, 61,00,67,00, 6F,00,00,00. can he deduce that the encryption key is "Buffalo"? 42,00,75,00, 66,00,66,00, 61,00,6C,00, 6F,00,00,00. I'm thinking that there should be only one 128-bit key that could convert Plaintext #1 to Ciphertext #1. Does this mean I should go to a 192-bit or 256-bit key instead, or find some other solution? (As an aside, here are two other ciphertexts for the same plaintexts but with a different key.) Ciphertext #1 A ("Detroit"): E4,28,29,E3, 6E,C2,64,FA, A1,F4,F4,96, FC,18,4A,C5. Ciphertext #2 A ("Chicago"): EA,87,30,F0, AC,44,5D,ED, FD,EB,A8,79, 83,59,53,B7.

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  • Is the wireless driver from Live USB different from the standard install?

    - by Rafael Magalhães
    Linux newbie here. I've been trying to use Ubuntu (x64) as my main OS since 11.10, but my wireless connection on it has been very unstable, droping every other 5-10 mins. For this reason I see myself forced to use Windows 7 (dual booting), where connection works flawlessly -- which really bothers me. My card is an Atheros 9k, which claims a reasonable amount of wireless complaints on Ubuntu forums. I've tried every suggestion given on past questions to this site but to no avail. However, while running Ubuntu Live USB for some of the tests, I noticed that my wireless connection never failed on it and wondered if its network configuration differs from the one on the default Ubuntu install. If this is the case, how could I reproduce the Live USB network environment on my hard drive install?

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  • My wireless/WiFi connection does not work. What can I do?

    - by Wild Man
    Your situation You have successfully installed Ubuntu. You have just downloaded and booted Ubuntu live media. The latest LTS (see also HWE) or latest non-LTS release are preferred. See the list of Ubuntu releases that are currently supported.) You upgraded your Ubuntu installation to the latest release that the software updater offered you. WiFi worked before, but not now on the new release. You migrated your existing Ubuntu installation to new hardware. Your problem The wireless of your laptop or dekstop is not working. You tried switching the wireless switch off and on and you tried rebooting several times, but you don't see any WiFi access points. You can see your wireless access point, but you cannot establish a connection. You want to analyze the problem, but you don't know where to start or what information you can provide. Related questions I have a hardware detection problem, what logs do I need to look into?

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  • What software is responsible for connecting to the wireless net specified in /etc/network/interfaces?

    - by zuba
    I'm curious what software (package, utility in bin's) handle interface parameters in /etc/network/interfaces and decides to connect to the specified wireless net. I use wifi usb stick dlink DWL-110 attached to wlan0 with ndiswrapper driver. Sometimes wlan0 sees my wifi net - iwlist wlan0 scan shows it, but does not connect to it - iwconfig shows AP Not-Associated, until I replug the stick. Neither reinserting module with ndiswrapper, not ifdown/ifup or restarting networking helps. That is why I need to know what OS entity handles connection/reconnection to wireless net. EDIT: shame on me, I use wireless-tool package with wep encryption

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  • A Single wireless network is not showing up in Ubuntu that used too, and other devices have no issue finding or connecting to it

    - by Kit Sunde
    Up until about a week ago I could connect to my wireless, but now I suddenly can't. Every other wireless in the area show up in the network manager. My kindle can connect to it, my friend can connect to it (in windows) without having connected to it before. My other netbook (Samsung NC10) can connect to it, but my other Samsung N150 now cannot even see it. I have tried deleting the old auto entry for it in the network manager Tried disabling and enabling both the networking and the wireless through the network indicator. Disabled the networking through the hardware shortkut key thing [fn] + [F9] Attempting to connect to it as if it was a hidden network. I'm at a loss, how would I go about debugging and unborking my computer?

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  • Script to connect to hidden wireless network with static IP?

    - by nLinked
    Would like a script, when run, it should connect to a hidden wireless network with these details: SSID is "Wireless" Network is not broadcasting its SSID above (is hidden) WPA2-PSK, AES, password is "password" Static IP: 192.168.1.1 Def. gateway: 192.168.1.254 DNS: 192.168.1.254 No idea how to do this. But I do know the wireless interface is called wlan0 and I'm on Ubuntu 10.10. I don't want to use the built in Network Manager as it never auto-connects on startup. WICD doesn't work either. Any ideas most welcome.

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  • Programmatically get the WLAN config of a machine and use netsh to setup new profile

    - by Maestro1024
    How can I programmatically get the wireless LAN configuration of a machine and use netsh to setup new profile? I am having trouble getting the netsh command to set the ssid of a new card. I installed the drivers and plugged it in. I see in ipconfig it says the "media is disconnected" (fair enough). I then send the following command netsh wlan connect name=profile1 ssid=myNetwork interface="Wireless Network Connection 2" problem is I get an error "There is no profile "profile1" assigned to the specified interface. What is a profile for a wireless card? What should I set it to? How can I get my SSID set and connected for the card?

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