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  • smtp sasl authentication failure

    - by cromestant
    hello, I have configured and fixed almost all the problems with my postfix +courier + mysql setup for virtual mailboxes. I can now receive mail and send it from webmail (squirrel). BUT, what I can't do is authenticate from outside client. Since my isp blocks port 25 I setup postfix to work on 1025 for smtp and setup verbose loging. Here is the verbose log of a failed authentication process LOG Authentication for imap and pop3 seem to be working but this one is not. Here is the postconf -n output. Also through mysql I can verify that it is trying to validate through the system, running a query that returns the encrypted password stored in the database. I can't seem to find the error for this. thank you in advance

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  • Public Facing Recursive DNS Servers - iptables rules

    - by David Schwartz
    We run public-facing recursive DNS servers on Linux machines. We've been used for DNS amplification attacks. Are there any recommended iptables rules that would help mitigate these attacks? The obvious solution is just to limit outbound DNS packets to a certain traffic level. But I was hoping to find something a little bit more clever so that an attack just blocks off traffic to the victim IP address. I've searched for advice and suggestions, but they all seem to be "don't run public-facing recursive name servers". Unfortunately, we are backed into a situation where things that are not easy to change will break if we don't do so, and this is due to decisions made more than a decade ago before these attacks were an issue.

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  • What happens when a flash drive wears out?

    - by endolith
    Flash memory has a limited number of read/write cycles, after which it fails. What happens when it fails? Is it like a hard drive, where a failed write is silently moved to another part of the disk and that sector marked as bad and never used again, without data loss? Are there a limited number of replacement sectors? Do operating systems warn the user in some way?

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  • How can I connect to a CIFS/SMB share on a non-default port?

    - by fsckin
    I'm trying to get a contractor connected to a CIFS share (port 445). He's not a big shop (so no go on using VPN). His ISP blocks outgoing connections on port 445. I've been doing some rsync to ftp madness as a workaround to have the share available to him, but it's getting out of control -- we're syncing nearly 40GB a day to an external ftp site and it's going to be much easier just to have him connect and only grab the stuff he needs. So... I can have the CIFS share open to the internet (filtered to allow access to his IP only) on port 446. How the heck can he connect to that? I looked through "net use" and didn't see anything about using another port.

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  • Tail the filename, not the file

    - by Craig Walker
    In UNIX (OS X BSD to be precise), I have a "tail -f" command on a log file. From time to time I want to delete this log file so I can more easily review it in my text editor. I delete the file, and then my program recreates it after new activity. However, my tail command (and anything else that was watching the old log file) doesn't update; it's still watching the old, deleted log file. I think I understand why this is (file names simply being pointers to blocks of file data). I'd like to know how I can work around this. Ideally, my tail command (and anything else I point to the file) would be able to read the data from the new file when the file name has been deleted and recreated. How would I do this?

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  • EC2-like virtualisation platform with non-RDP access

    - by code'
    I'm looking into setting up a few small VMs. The trouble is the software I intend to install on them (Cisco VPN Client) blocks out networking (other than to the target VPN destination...) with no workaround. This means that Remote Desktop or other methods of connecting to VMs that go via the Internet (e.g. GoToMyPC, LogMeIn) are a non-starter. What I'm really looking for is an EC2-like platform but which gives direct access to the VM through (for example) Hyper-V Manager. Sadly the only way they all seem to offer to remote control the VMs is direct access via Remote Desktop, whereas I need to be one layer above that (if that makes sense). A viable alternative would be to run virtualisation software within a Windows EC2 instance; obviously hardware virtualisation is impossible but I wonder if there are any software virtualisation platforms that could be run and that would work. Does anyone know if something like this exists/is possible? Thanks! C

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  • How to block own rpcap traffic where tshark is running?

    - by Pankaj Goyal
    Platform :- Fedora 13 32-bit machine RemoteMachine$ ./rpcapd -n ClientMachine$ tshark -w "filename" -i "any interface name" As soon as capture starts without any capture filter, thousands of packets get captured. Rpcapd binds to 2002 port by default and while establishing the connection it sends a randomly chosen port number to the client for further communication. Both client and server machines exchange tcp packets through randomly chosen ports. So, I cannot even specify the capture filter to block this rpcap related tcp traffic. Wireshark & tshark for Windows have an option "Do not capture own Rpcap Traffic" in Remote Settings in Edit Interface Dialog box. But there is no such option in tshark for linux. It will be also better if anyone can tell me how wireshark blocks rpcap traffic....

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  • javaws not found

    - by Hunt
    i have a server which has centos installed in it , recently i have installed jdk 1.6 into it. when i try to run java command from shell its working perfectly fine but when i tried running javaws (which comes with the jdk 1.6 only ) it is showing me following error java is stored into /usr/java/jdk1.6.0_25 and path is set to /usr/bin/ when i type which java Java Web Start splash screen process exiting ... Bad installation: JAVAWS_HOME not set: No such file or directory

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  • Apache LimitExcept not behaving as expected

    - by Farseeker
    I have the following directive in my Apache httpd.conf: <LimitExcept OPTIONS PROPFIND REPORT> deny from all </LimitExcept> OPTIONS and PROPFIND work as expected, but REPORT returns 400: Bad Request. Removing the LimitExcept alltogether and everything works as expected. Any ideas on why this might be? (This is the implementation of my question here).

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  • Need text file indexing software

    - by BLN
    Hi, I have 10 HDD. I using WhereIsIt software to index all files. I have many text file larger than 100KB and I want index text file content. But it only support from 4KB to 32KB. I moving to Google Desktop, but it very bad. I cannot start indexing as I wish. It only indexing when my computer in IDLE status.

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  • Fix problems with DirectX 9 on Windows XP

    - by Domingo
    Hello, i tottaly mess up the directX 9 on my system. Trying and trying think i reinstall it but in a very bad way (dxdiag now dont know what version is and directdraw direct3d and aceleration AGP dont work any more) Do you know a way to clean all this mess? Thanks

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  • Enable file download via redirect in IE7

    - by Christian W
    Our application enables our customers to download files to their computer. The way I have implemented it is using asp.net with a dropdown. When the user clicks the dropdown they get the choice of "PDF","Powerpoint", and a couple of other choices depending on circumstances. Then, in postback depending on the choice the user made, it will return a file (changing the content-header and such and then bitbanging a file to the user). This works perfectly in all browsers, but IE7 complains that this is a security risk and blocks the download. Is there any way for the users to authorize downloads from our webapplication?

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  • Why does mod_security require an ACCEPT HTTP header field?

    - by ripper234
    After some debugging, I found that the core ruleset of mod_security blocks requests that don't have the (optional!) ACCEPT header field. This is what I find in the logs: ModSecurity: Warning. Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/conf.d/modsecurity/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "example.com"] [uri "/"] [unique_id "T4F5@H8AAQEAAFU6aPEAAAAL"] ModSecurity: Access denied with code 400 (phase 2). Match of "rx ^OPTIONS$" against "REQUEST_METHOD" required. [file "/etc/apache2/conf.d/modsecurity/optional_rules/modsecurity_crs_21_protocol_anomalies.conf"] [line "41"] [id "960015"] [msg "Request Missing an Accept Header"] [severity "CRITICAL"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER"] [hostname "example.com"] [uri "/"] [unique_id "T4F5@H8AAQEAAFU6aPEAAAAL"] Why is this header required? I understand that "most" clients send these, but why is their absence considered a security threat?

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  • User not able to change permissions on folder in network share for Windows Server 2003

    - by Ishmael
    I have a user that has rights to change permissions within a certain folder on a Windows Server 2003 network share. Although I grant this person the rights to change permission and ownership this person cannot change any permissions. The network share is also set to allow everyone full control. (I understand it is bad practice yet this is how it was first configured) Is there any reason why this domain user cannot modify permissions on the folder and files they create?

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  • How to make MAMP PRO secure enough to serve as webserver? Is it possible?

    - by Andrei
    Hi, my task is to setup a MAMP webserver for our website in the easiest way so it can be managed by my colleagues without experience in server administration. MAMP PRO is an excellent solution, but some guys don't suggest to use it for serving external requests. Could you explain why it is bad (in details if possible) and how to make it secure enough to be a full-scale and not-only-local webserver? Is there a better solution?

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  • How to make MAMP PRO secure enough to serve as webserver, if possible?

    - by Andrei
    Hi, my task is to setup a MAMP webserver for our website in the easiest way so it can be managed by my colleagues without experience in server administration. MAMP PRO is an excellent solution, but some guys don't suggest to use it for serving external requests. Could you explain why it is bad (in details if possible) and how to make it secure enough to be a full-scale and not-only-local webserver? Is there a better solution?

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  • Possible capacitor plague - need help identifying

    - by cornjuliox
    I've been having some PC power issues lately, and I think I've tracked it down to a bad power supply. Lately, when I'm on my PC it will often restart without warning, displaying "Hypertransport sync flood error occurred last boot." once POST finishes. I've googled the error, but can't come to a definitive conclusion as to what's causing it. I've seen posts suggesting that it might be a power supply issue, but nothing conclusive. Here's what I've done so far: -I haven't installed anything suspect within the last 3 months. -I do overclock just a tiny bit, so I tried raising the voltages a little. That didn't work so I brought both CPU multiplier and voltages all back to their default settings, but that didn't solve the problem either. The problem still occurs. -AV scanned the whole system, nothing suspect. -I suspected that it might be a bad power supply so I cracked that open and found the following: I think it might be cap plague, but I'm not sure. It looks more like glue TBH. Could someone help me figure out what might be wrong with this PC? EDIT: Sometimes, after these restarts, I noticed that the GPU fan doesn't spin up, and the single rear case fan that just happens to be connected to the same molex Y-cable as the GFX card doesn't spin up either. Anything to that? EDIT 2: I do use the system quite heavily, but I don't know how that will factor into this. I often play Diablo 3 and EVE Online at the same time, frequently alt-tabbing between the two. I also have Firefox open in the background, sometimes with several tabs, and if I feel like it, I'll mute the in-game sound and open foobar2000 for better music. Could it be that I'm just pushing this thing too hard? EDIT 3: I also noticed something odd. Right before I experience these restarts, my monitor would suffer from very faint lines of static moving across the screen. The monitor is still very much useable, but it is very annoying. Following the restart it disappears, and then would gradually re-appear over the next few days, and then restarts again. I find it to be very odd. System specs for good measure: Orion 600 W PSU AMD Athlon II X3 440 (overclocked to 3.14 ghZ, raised the CPU multiplier to x13 from x10) MSI G40-775 motherboard 1 GB inno3D GTX 550 ti 4 GB DDR3 RAM 500 GB Samsung SATA HD

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  • Set maximum requests per IP in IIS7

    - by Maxim V. Pavlov
    I have a web site deployed to IIS 7. One page it is has 15+ .js files linked to it. Last two files referenced in <head> tag (loaded last) get 403 forbidden response from server. I have enabled FailedRequestTracing and have been able to see a detailed error code which is 403.502. I suppose over a very short period of time I am just pulling to much and the IIS blocks me. Is there a way I can configure the limit to enable larger number of requests and get rid of 403.502 error?

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  • Can admins monitor my activity locally even when I use a VPN?

    - by Arjun Create
    My school has one of those super overreacting web blockers (specifically Fortisnet) that blocks things that should be accessible by a high-school senior trying to research projects. Despite many students' complaints the administration's hands are tied due to parents' complaints. I have setup a VPN account from http://www.vpnreactor.com. With this I am able to bypass the blocker. I know this service hides my IP from websites and servers on the web. I also know that the school pays an IT guy just to monitor sites and network traffic that the students are using. Basically, will he be able to see my network traffic? More importantly, will he be able to trace it to my computer or its MAC address? I am connecting over Wi-Fi, not ethernet.

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  • Can keybounce be caused by an incorrect driver?

    - by thursdaysgeek
    I recently re-installed the OS on an old laptop, and just noticed that it seems to have some pretty bad keybounce. Could that be that I need to find and install a driver for the keyboard, or is it more likely that it is just an old laptop and is wearing out? I didn't notice the keybounce before the reinstall.

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  • windows server backup 2008 R2 - what is generating all the change data?

    - by bobjandal
    We have a small relatively idle windows server 2008 R2 installation that does basic filesharing and exchange for about 10 not very active users. When running a windows server backup, the incremental data daily is about 20GB. This is not coming from users shared files, nor from changes in their mailbox sizes. The total size of the installation is 249GB, which is mostly old files. Where is all this data coming from, and how can I reduce it ? Using online backup of the vhd file from the backup is taking a while because of this daily change. Is there some way I can at least see what files are changing and contributing to this data ? Options I can think of but am not sure about: 1) pagefile churning - altho the backup does not include the pagefile, perhaps the changed blocks left behind are included ? 2) logs or something ? but the installation size stays the same every day 3) should I zero free space using sdelete before backing up perhaps ?

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  • Resizing mysterious partition written by DDing an ISO file

    - by Jon
    I downloaded clonezilla and then wrote it to a USB flash drive with this: dd if=clonezilla.iso of=/dev/sdb I've confirmed that the system boots and clonezilla runs from the flash drive. I want to store a clonezilla backup on the same flash drive clonezilla is running on, but I tried it and ran out of space, so I started looking at how to resize the mysterious partition type that was generated from the ISO. fdisk -l /dev/sdb .... Device Boot Start End Blocks Id System /dev/sdb1 * 1 111 113664 17 Hidden HPFS/NTFS .... I've tried using ntfsresize from the Debian ntfsprogs package. I'm trying gparted next, but thought I'd ask here if anyone knows a neat way to resize a partition created on flash from a liveCD image. Thanks in advance Jon ps. Assume Debian 6 please.

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