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  • USB resets with Ubuntu 9.10

    - by Grumbel
    Since the upgrade to Ubuntu 9.10 I have issues with getting USB device resets on my Maxtor OneTouch USB harddrive: Nov 9 20:54:37 localhost kernel: [32459.100021] usb 2-2: reset high speed USB device using ehci_hcd and address 4 Nov 9 21:54:37 localhost kernel: [36059.100017] usb 2-2: reset high speed USB device using ehci_hcd and address 4 Nov 9 23:24:37 localhost kernel: [41459.112025] usb 2-2: reset high speed USB device using ehci_hcd and address 4 The device itself continues to work fine, the resets however wake the device out of its sleep state and thus cause it to spin up, which is very annoying. Interestingly, as the log shows, the resets happen at pretty regular intervals (i.e. one hour or half an hour), not randomly. An USB card reader seems to have the same issues, while another USB harddrive from a different manufactor works fine on the same PC. What could be causing this and how could I fix it?

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  • Mail server hammering

    - by Rodrigo
    I've noticed a quick increase on smtp connections coming to my server, investigating it further i figured out that there's a botnet hammering my smtp server. I've tried to stop it by adding a rule at iptables: -N SMTP-BLOCK -A SMTP-BLOCK -m limit --limit 1/m --limit-burst 3 -j LOG --log-level notice --log-prefix "iptables SMTP-BLOCK " -A SMTP-BLOCK -m recent --name SMTPBLOCK --set -j DROP -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTPBLOCK --rcheck --seconds 360 -j SMTP-BLOCK -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTP --set -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --name SMTP --rcheck --seconds 60 --hitcount 3 -j SMTP-BLOCK -A INPUT -p tcp --dport 25 -m state --state NEW -j ACCEPT That would avoid them from hammering "too fast", however the problem still, there's like 5 tries per second, it's going insane, i had to incrase the maximum number of childs of sendmail/dovecot. There's too many ips to filter out manually and simply changing the smtp to another port is not practical since i got many other clients on that server. I'm using sendmail with dovecot, any ideas to have this filtered out more efficiently?

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  • Is it safe to use any USB charger for charging any USB device?

    - by Vineet Menon
    I have an apple USB AC charger which is rated to provide 5V, 1A output and a Sony mp3 player NWZ B143F. I don't know the spec of Sony audio player. But I have another mp3 player from Transcend which is rated to take 5V, 1A input voltage. So, is it safe to assume that Sony or for that matter any mainstream mp3 player would take 5V, 1A as input? Is it safe to use the apple charger with Sony mp3 player?

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  • How can I have APF block script kiddies that mod_security detects?

    - by Gaia
    In one of the vhosts' error_log I found thousands of lines like these, all from the same IP: [Mon Apr 19 08:15:59 2010] [error] [client 61.147.67.206] mod_security: Access denied with code 403. Pattern match "(chr|fwrite|fopen|system|e?chr|passthru|popen|proc_open|shell_exec|exec|proc_nice|proc_terminate|proc_get_status|proc_close|pfsockopen|leak|apache_child_terminate|posix_kill|posix_mkfifo|posix_setpgid|posix_setsid|posix_setuid|phpinfo)\\\\(.*\\\\)\\\\;" at THE_REQUEST [id "330001"] [rev "1"] [msg "Generic PHP exploit pattern denied"] [severity "CRITICAL"] [hostname "x.x.x.x"] [uri "//webmail/config.inc.php?p=phpinfo();"] Given how obvious the situation is, how come mod_security isnt automatically adding at least that IP to deny rules? There is no way someone hasnt thought of this before...

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  • Multi serial devices on one port

    - by adopilot
    I am developing one software for managing parking lot. System is designed to use four HID RFID devices for authorization clients on gates. Each device should be connected to server by Serial port RS232. Now I wondering is there some device or method to join all that devices on one device and after that to I have only one RS232 cable connected to server. My problem is in that RFID card readers are simple (stupid) devices and there I am not able to change anything, but Ill like to know from which specific device is coming input. What Ill want to do with that new device which need to join four readers is to add suffix or prefix to string that sent from RFID card reader. So I can identify device that is sending card number to my server. I am developing my system on Win platforms.

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  • apcupsd on Linux does not report on APC BackUPS Pro 900

    - by lserni
    From what documentation I could find, the UPS should be (is!) supported by Linux and ought to work with apcupsd. I looked for specific problems such as the infamous Microlink protocol, and found none. I have found a feedback from a guy in UK that reports using this very model on a not-too-different OS version (his OpenSuSE 12.1, mine 12.3 x86_64). The USB port is detected, lsusb reports Bus 002 Device 003: ID 051d:0002 American Power Conversion Uninterruptible Power Supply and lsusb -v -s002:003 confirms and expands: Bus 002 Device 003: ID 051d:0002 American Power Conversion Uninterruptible Power Supply Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x051d American Power Conversion idProduct 0x0002 Uninterruptible Power Supply bcdDevice 0.90 iManufacturer 1 American Power Conversion iProduct 2 Back-UPS RS 900G FW:879.L4 .I USB FW:L4 bNumConfigurations 1 Configuration Descriptor: [...] Interface Descriptor: [...] bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.00 bCountryCode 33 US bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 1134 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 100 Device Status: 0x0000 (Bus Powered) The kernel recognizes this and duly sets up crw------- 1 root root 180, 96 Nov 4 16:11 /dev/usb/hiddev0 As far as I know, everything is as it should be. I have put the standard configuration in /etc/apcupsd/apcupsd.conf (which is Unix-terminated, ASCII-only, no BOM (just in case)) UPSCABLE usb UPSTYPE usb DEVICE (I have also tried commenting out DEVICE, and setting a device of /dev/puppa results in an access attempt to /dev/puppa, not some /var/lib/dev/puppa or /dev/puppa\r\n). Yet, what apcaccess tells me is VERSION : 3.14.10 (13 September 2011) suse CABLE : USB Cable DRIVER : USB UPS Driver UPSMODE : Stand Alone STARTTIME: 2013-11-04 16:24:22 +0100 MODEL : STATUS : NOBATT LINEV : 000.0 Volts LOADPCT : 0.0 Percent Load Capacity BCHARGE : 000.0 Percent TIMELEFT : 0.0 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds SENSE : Low LOTRANS : 000.0 Volts HITRANS : 000.0 Volts It doesn't recognize the model, and reports no battery (and no voltage). This confirms that it's not the Microlink problem, or it would report the battery status, if precious little else. If I disconnect the USB cable, I get an apcupsd message to the effect that communications have been lost; and I get the "communication restored" broadcast too, if I reconnect the cable. apcupsd is monitoring. So everything tells me that it should work -- only it doesn't. Does anyone spot what I'm missing?

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  • What's the weirdest thing you've ever seen a non-techie do to a computing device?

    - by googletorp
    I thought it would be fun to bring out the stories on what people have done throughout the ages with computers due to their sometimes, to put it politely, less than perfect grasp of technology. I'll start out with a little story from my high-school days. After graduation, a classmate of mine, who took IT and subsequently scored an A in the subject, was sent an e-mail by a friend. She replied to his mail: "I'm sorry, but I can't reply your mail, since I don't have your email address." Till this day I still can't understand why she gave such a weird reply as she was a bright girl although not a techie. Now, let's hear those other battle stories from the real world...

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  • What parameters to mdadm, to re-create md device with payload starting at 0x22000 position on backing storage?

    - by Adam Ryczkowski
    I try to recover from mdadm raid disaster, which happened when moving from ubuntu server 10.04 to 12.04. I know the correct order of devices from dmesg log, but given this information, I still cannot access the data. The superblocks look messy; the mdadm --examine for each disk is on this question on askubuntu By inspecting the raw contents of backing storage, I found the beginning of my data (the LUKS container in my case) at position 0x22000 relative to the beginning of the first partition in the raid. Question: What is the combination of options issued to "mdadm --create" to re-create mdadm that starts with the given offset? Bitmap size? PS. The relevant information from syslog when the system was healthy are pasted here.

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  • Create access point (uap0) on debian 7(arm) - not found?

    - by ethrbunny
    I'm working with a fanless PC that has an ARM chipset, 2 eth plugs and a wifi card (among other things). If I install debian 6 on it all three network interfaces are available at boot time. Today I tried to install debian 7 and had numerous errors indicating that the wireless card isn't supported. uap0: error fetching interface information: Device not found SIOCSIFADDR: No such device uap0: ERROR while getting interface flags: No such device uap0: ERROR while getting interface flags: No such device No such device ERR:UAPHOSTCMD is not supported by uap0 ERR:Command sending failed! No such device ERR:UAPHOSTCMD is not supported by uap0 ERR:Command sending failed! I've tried comparing the kernel module list to the working system but there are too many other differences to make something obvious enough (to me) stand out. How would I get started debugging this problem?

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  • How to free up block device that is mounted to an inaccessible place?

    - by Vi
    root@vi-notebook:~# cat /proc/mounts | grep raidy /dev/md0 /root/e/i/wpc2/boot/mnt/raidy reiserfs ro,nosuid,nodev,noexec,noatime 0 0 root@vi-notebook:~# umount -n /root/e/i/wpc2/boot/mnt/raidy umount: /root/e/i/wpc2/boot/mnt/raidy: Transport endpoint is not connected root@vi-notebook:~# mount /dev/md/raidy /mnt/raidy/ -t reiserfs -o nodev,nosuid,noexec,acl,noatime mount: /dev/md0 already mounted or /mnt/raidy/ busy The only workaround I found is: root@vi-notebook:~# losetup /dev/loop0 /dev/md/raidy root@vi-notebook:~# mount /dev/loop0 /mnt/raidy/ -t reiserfs -o nodev,nosuid,noexec,acl,noatime

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  • Help me find the offending process waking my Windows 7 PC from hibernate every night

    - by DavidGugick
    Recently my Windows 7 64-bit PC has started waking every night from hibernation around 3:30am. I have done the following to try and figure out what is causing the issue with no luck: Examined the Windows Event logs. Nothing is noted Ran powercfg -lastwake and that reports nothing c:\powercfg -lastwake Wake History Count - 1 Wake History [0] Wake Source Count - 0 Ran powercfg to find what devices are armed for wake. Interestingly, this reports two items (I've already unchecked the "Allow this device to wake the computer" in device manager): The keyboard and something called the "eHome Infrared Receiver (USBCIR)". This is a desktop PC and it does not have an Infrared received, so I'm not sure what that device is. Suffice to say it does not have the option to "Allow device to wake..." available in Device Manager. C:\powercfg -devicequery wake_armed eHome Infrared Receiver (USBCIR) HID Keyboard Device My next step is to disable the Keyboard from wake, but I'm not convined that's the problem. This is on a Dell XPS435 if that helps anyone.

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  • How to display incoming trunk name at called device end with Asterisk?

    - by netmano
    We have an Asterisk with FreePBX, and using Grandstream and Panasonic VoIP phones. Now when an incoming call rings on the phones only displays "Line 1" (as it is configured at account 1 on phone) and the caller number. We would need to see the trunk name where the call comes. Please, suggest how can be achieved. I was wondering about rewriting the callerID to extend by the trunk name (like "LP - +12345").

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  • How to remove line breaks (or carriage returns) only from certain parts of a block of text?

    - by Luke Allen
    Whenever I copy formatted text from a PDF file which is formatted to have line breaks (or carriage returns), I need to find a way to remove these line breaks without removing the paragraph format. To do this I need to use RegEx (Regular expressions) to only remove the line breaks which aren't preceded by a period. So for example, if a string of text has a line break right after a period, that is obviously almost always a legitimate line break which will start a new paragraph. If a string of text has a line break mid-word or after a word with no period, it's simply part of the bad formatting I need to get rid of. My problem is that I don't know how to use RegEx to make it only remove the ^p tags in word or CRLF or line breaks in any format under the conditions that it omits ones following a period.

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  • When disabling the firewire-driver in Windows will this too disable firewire connected through a PCMCIA device?

    - by Christoffer
    The broader overarching question (not seeking an answer to this, but wanted to provide context) is how do I ensure that laptops running Microsoft Windows 7 and exposing DMA-ports (eg. firewire) are disabled once the operating system have loaded. Preventing the Firewire-driver from loading once Windows have booted works as expected, but I've been unable to confirm whether this too will disable a Firewire-port exposed through a PCMCIA-card. My question is hence whether disabling the Firewire-driver will also prevent a Firewire-port exposed through a PCMCIA from functioning?

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  • SQL Server backup/restore error: The Media Family on Device is Incorrectly Formed.

    - by Chris
    Basically, I'm having this issue: http://www.sqlcoffee.com/Troubleshooting047.htm What I'm doing is running a script I found online (http://pastebin.com/3n0ZfybL) to do a full backup, then rar'ing up the file and moving it to my computer. The CRC of the backup file inside the rar is correct on both computers, so there is no problem with data being corrupted when I transfer it. But then I go and try to restore the database on my dev computer here and I get the errors "sql server cannot process this media family" ... "msg 3013". Why is this happening? I'd test out the backup on the server I'm getting it from, but it's a production server.

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  • IIS7: How to block access with a web.config file?

    - by neves
    I know that IIS7 allows me to have a per directory configuration with the web.config xml file. I have a directory with some configuration files that don't want to be web accessible. A local web.config file forbidding read access to it would be a nice solution. What should be the contents of a web.config file to forbid web access to the files? Edit: I'm trying to put a web.config file with these contents in a file: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.web> <authorization> <deny users="*" /> <!-- Denies all users --> </authorization> </system.web> </configuration> But I can still directly access a file inside the directory. What's wrong with it? How do I debug what's happening?

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  • Block SMTP session with sender domain which doesn't itself accept SMTP connection.

    - by bignose
    I'm administrating a mail service for a small business. Their mail host's internet connection is an ADSL service with a permanent IP address. Unfortunately, many misconfigured mail systems will happily deliver to this host, but, when the host attempts to send mail back (e.g. a bounce notice, or a normal response from someone), the declared sender's domain has an MX which refuses to receive connections from this host. That misconfiguration makes their system a one-way mail sender, which is a problem. How can I configure Postfix on this customer's mail host to refuse SMTP sessions that declare a sender domain which itself refuses SMTP from this host? That is, if the SMTP client declares a domain that we can't make SMTP connections back to, then there's not much point accepting the incoming connection in the first place. Note that I'm not, as some commenters have assumed, talking about checking whether the SMTP client will receive messages. The check I want is whether the declared sender's domain (regardless of who the current SMTP client is) will accept SMTP connections from here. In other words: when we get around to sending a message back, we'll need the sender's domain to accept SMTP connections; I want to do that check before accepting the incoming session. I'm imagining a late check (after the low-cost checks to winnow most of the rubbish connections) that keeps the client on the other end while it attempts an SMTP client connection back to the declared domain of the sender. If that connection is rejected, the incoming one is also rejected. I'm also open to other suggestions for how this problem might be addressed (short of not using this mail host at all, which isn't an option).

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