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  • can i use an ip-list include file for iptable blacklisting

    - by rubo77
    I would like to block all countries except mine in iptables, that is a lits with about 100.000 Entries. how can i define this blacklistfile in a script, so iptables blocks all those ip-ranges? maybe i can use http://www.ipdeny.com/ipblocks/data/countries/ that provides lists in the form 117.55.192.0/20 117.104.224.0/21 119.59.80.0/21 121.100.48.0/21 ... i want to be able to change the blacklistfile easily without having to change the iptables-script

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  • Cant Add Columns to a AD Task pad except for the top level of the domain

    - by Darktux
    We are working on Active Directory taskpads application for user management in our organization and facing stange issue. When we create a taskpad, and when we are at top level of the domain, i can click view - Add/Remove Columns and add "Pre Windows Name" (and lots of other properties) to the taskpad as columns, but when i just go 1 level down , i can only see "Operating System" and "Service Pack" ; why is it happening , isnt "Domain Admins" supposed to god access to all the things in AD domain , atleast of objects they own? It is important to have "Pre Windows 2000" Name as a column begause with out that our "Shell Command" task wont show up in taskpads, since its bound to parameter "Col<9" (which is pre qindows name). Please do let me know if any additions questions to clarify my problem.

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  • Monitor someone on server

    - by edo
    Im in the unfortunate position of having to give someone who I do not fully trust privileged access to a webserver to finish work that they never completed. They will access the server remotely (ie I will not be able to see their screen). What can be done to a) proactively limit any potential damage and b) accurately log anything they do on the server for analysis afterwards, even if things seem ok? They will be updating a web application. Thanks in advance! --- More informtion: The server is a Ubuntu AWS server.

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  • no internet mail group / mail sending and delivery restrictions

    - by Jeff
    I run a win 2k8 a/d server and an win 2k8 exchange 07 server I have a group called 'No Internet Mail', i made it a distribution group. I tried to setup a transport rule on the exchange server that is configured as follows for outgoing: from a member of no internet mail and sent to users outside the organization redirect the message to administrator and send message refused, forwarded to administrator. Please talk to management for external email use. however , when i enable this it forwards everyones emails to me regardless if they are a member of the no internet mail group or not. not sure what im doing wrong, thanks in advanced.

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  • ESX Firewall Command Troubles

    - by John
    Hi, I am working on creating some firewall rules to stop some of the SSH brute-force attacks that we have seen recently on our ESX server hosts. I have tried the following rules from the CLI to first block all SSH traffic and then allow the two ranges that I am interested in: esxcfg-firewall --ipruleAdd 0.0.0.0/0,22,tcp,REJECT,"Block_SSH" esxcfg-firewall --ipruleAdd 11.130.0.0/16,22,tcp,ACCEPT,"Allow_PUBLIC_SSH" esxcfg-firewall --ipruleAdd 10.130.0.0/16,22,tcp,ACCEPT,"Allow_PRIVATE_SSH" However, these rules are not working as intended. I know that if you do not enter the block rule first, then the allow rule will not be processed. We are now having the issue where the first entered allow rule is being ignored such that the block rule works and the last entered allow rule works. I was curious if anyone had any ideas on how I could allow a few different ranges of IP's with the esxcfg-firewall --ipruleAdd command? I am at a loss and am having a hard time locating examples or further documentation about this. Thanks in advance for your help with this.

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  • How to play multiple videos side-by-side synchronized?

    - by Don Salva
    I've got 3 videos, all 3 have the same time, same amount of frames, and they only differ in terms of encoding quality. Now I need them to run side-by-side in synchronized fashion for evaluation purposes. Meaning when I press "play" BOTH! videos should start. Analogically for stop, forward, backward. Anyone know any player capable of doing that? By that I mean playing more than 1 video side-by-side... Platform: Win7

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  • Raid1+0: create stripe over two /dev/mdx on partition or not?

    - by Chris
    Given that I haven't found a way to define how a Raid10 is created with mdadm, i went the Raid1+0 solution. How to display/define Mirror/Stripping pairs with mdadm mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdf1 mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdg1 /dev/sdh1 mdadm --create /dev/md10 --level=0 --raid-devices=2 /dev/md0 /dev/md1 My question is about the stripe. For the mirror I create a primary partition over the full HD and set partition type to FD. So, should I do the same for the Stripe? Create partition on /dev/md0 and /dev/md1 (primary over full 'HDD', set partition type correctly) and then do the stripe on the partition? Is there a correct way here or are there any advantages/disadvantages to a solution? Thank you

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  • Is the guideline: don't open email attachments or execute downloads or run plug-ins (Flash, Java) from untrusted sites enough to avert infection?

    - by therobyouknow
    I'd like to know if the following is enough to avert malware as I feel that the press and other advisory resources aren't always precisely clear on all the methods as to how PCs get infected. To my mind, the key step to getting infected is a conscious choice by the user to run an executable attachment from an email or download, but also viewing content that requires a plug-in (Flash, Java or something else). This conscious step breaks down into the following possibilities: don't open email attachments: certainly agree with this. But lets try to be clear: email comes in 2 parts -the text and the attachment. Just reading the email should not be risky, right? But opening (i.e. running) email attachments IS risky (malware can be present in the attachment) don't execute downloads (e.g. from sites linked from in suspect emails or otherwise): again certainly agree with this (malware can be present in the executable). Usually the user has to voluntary click to download, or at least click to run the executable. Question: has there ever been a case where a user has visited a site and a download has completed on its own and run on its own? don't run content requiring plug-ins: certainly agree: malware can be present in the executable. I vaguely recall cases with Flash but know of the Java-based vulnerabilities much better. Now, is the above enough? Note that I'm much more cautious than this. What I'm concerned about is that the media is not always very clear about how the malware infection occurs. They talk of "booby-trapped sites", "browser attacks" - HOW exactly? I'd presume the other threat would be malevolent use of Javascript to make an executable run on the user's machine. Would I be right and are there details I can read up on about this. Generally I like Javascript as a developer, please note. An accepted answer would fill in any holes I've missed here so we have a complete general view of what the threats are (even though the actual specific details of new threats vary, but the general vectors are known).

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  • Combine Local Disk to another hard drive

    - by admintech
    I have a 150gb local disk on my Windows 7 x64 ultimate computer, i recently bought another 150gb hard drive and wish to merge/combine the 2 together to form 1 300gb hard drive. Is this possible to do without losing all the data on it? And i have thought about SATA but was curious if there was a faster easier option before i go ahead and take my pc apart

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  • Preventing back connect in Cpanel servers

    - by Fernando
    We run a Cpanel server and someone gained access to almost all accounts using the following steps: 1) Gained access to an user account due to weak password. Note: this user didn't had shell access. 2) With this user account, he accessed Cpanel and added a cron task. The cron task was a perl script that connected to his IP and he was able to send back shell commands. 3) Having a non jailed shell, he was able to change content of most websites in server specially for users who set their folders to 777 ( Unfortunately a common recommendation and sometimes a requirement for some PHP softwares ). Is there a way to prevent this? We started by disabling cron in Cpanel interface, but this is not enough. I see a lot of other options in which an user could run this perl script. We have a firewall running and blocking uncommon outgoing ports. But he used port 80 and, well, I can't block this port as a lot of processes use them to access things, even Cpanel itself.

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  • Server load increases by lot of httpd request with same PID

    - by user3740955
    I can see that my server load increases to more than 200-300 range. Before 1 week the maximum load was around 20-25. In top and ps -ef i can see a lot of httpd threads and the PPID of most of the httpd request are of the same PID. When i verified this the parent process ID is of root. Please let me know how i can reduce the server load. I have searched a lot for this but not able to find out a proper solution for this. Please let me know. Please see below a part of the top output. apache 29698 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29700 2062 3 16:54 ? 00:00:00 /usr/sbin/httpd apache 29701 2062 10 16:54 ? 00:00:02 /usr/sbin/httpd apache 29702 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29703 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29705 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29706 2062 3 16:54 ? 00:00:00 /usr/sbin/httpd apache 29707 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29708 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29709 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29710 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29711 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29712 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd Server version: Apache/2.2.3

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  • iptables: separate clients from each other

    - by Florian Lagg
    Hello, is there a way to separate clients in a subnet so that they cannot reach each other? The infrastructure currently looks like this: 192.168.0.1/24 Gateway, a CentOS box with iptables. 192.168.0.10-20 Some clients which may reach each other 192.168.0.30 A single client which should not be able to reach the hosts 192.168.0.10-20 should be able to reach the gateway and the internet I don't know if it is possible, maybe you could give me your ideas how it could be done. I cannot influence the machine 192.168.0.30 because it is a virtual machine I want to rent to someone. Thanks.

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  • How to automatically copy a file uploaded by a user by FTP in Linux (CentOS)?

    - by Buttle Butkus
    Outside contractor says they need read/write/execute permissions on part of the filesystem so they can run a script. I'm ok with that, but I want to know what they're running, in case it turns out there is some nefarious code. I assume they are going to upload the file, run it, and then delete it to prevent me from finding out what they've done. How can I find out exactly what they've done? My question specifically asks for a way of automatically copying the file, which would be one way. But if you have another solution, that's fine. For example, if the file could be automatically copied to /home/root/uploaded_files/ that would be awesome.

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  • Using a Group Managed Service Account (gMSA) for a scheduled task

    - by Trevor Sullivan
    Back in Windows Server 2008 R2, when stand-alone Managed Service Accounts (sMSA) were new, they could not be used to execute scheduled tasks. In Windows Server 2012 however, there is a new type of account called the Group Managed Service Account (gMSA). This type of account is supposedly capable of launching scheduled tasks in the task scheduler on clients & member servers inside of a Windows Server 2012 forest/domain functional level. So far, I have: Established a Windows Server 2012 forest/domain Created a Group Managed Service Account (gMSA) Installed the gMSA on a Windows Server 2012 member server And currently I'm having trouble with: Setting a scheduled task to use the gMSA When I attempt to use a gMSA on a scheduled task, I get the error message that says "The object cannot be found" (paraphrased) message. My question is: How do I configure a Scheduled Task to execute using a Group Managed Service Account (gMSA)?

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  • Out of memory errors but not actually out of memory...

    - by commradepolski
    So, myself and my fellow support techs have been fighting with this issue and we still dont know what the problem is. Lets start off with the system specs: Windows XP 32 bit Corporate (SP2 and SP3) Intel D975XBX2 Mobo 4gb of ram Intel Core 2 Quad Q6600 ATI Radeon HD 3600 - 512mb After a few hours of working on the machine, the end user will begin to see the following symptoms: Out of memory messages Title bars and menus dont draw in properly Problems accessing network resources Problems opening up documents such as MSWord and MSPowerpoint and text files Problems opening up explorer windows General instability We have looked at task manager while this issue was occurring, and all indicators, like PF usage, threads, handles, etc. are normal. We have been having trouble pinpointing the root cause of this issue. It is also not situated with one user, it affects 8-10. So far we have tried: Resetting CMOS (Waiting to see results) Replacing video card (didnt help) Windows updates (didnt help) Updating network drivers (didnt help) Switching user from 1gbps to 100mbps network connection (awaiting results) Swapping the affected user's hardware (waiting for results) Increasing desktop heap size (helped for a bit but then the issue became more frequent) Applying the /3 switch to XP (didnt help) Increasing and decreasing and setting PF to system managed state (didnt help) We did have a power outage at the office a couple weeks ago, and all these issues became more frequent. Prior to the power outage it may take a week or so for the users to experience the issues but since the power outage it takes 3-4 hours or less. We havent had reports of the above issues causing BSODs, although that would be easier to diagnose :). Any help is greatly appreciated.

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  • Program for keeping encrypted files.

    - by Giorgi
    I am looking for a program which will encrypt files specified by me and allow me to view/edit/delete those files without creating a virtual disk. I do not want to have virtual disk as a domain administrator can access it so truecrypt is not the possibility. One possibility is to use winrar with password protected archive but winrar serves a different goal so it is not very user friendly for this purpose. If it's possible it would be nice if the program does not creates temp files while I open the files. Any suggestions?

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  • Store system passwords with easy and secure access

    - by CodeShining
    I'm having to handle several VPS/services and I always set passwords to be different and random. What kind of storage do you suggest to keep these passwords safe and let me access them easily? These passwords are used for services like databases, webserver user and so on that run customers' services, so it's really important to keep them in a safe place and strong. I'm actually storing them in a google drive spreadsheet file, describing user, password, role, service. Do you know of better solutions? I'd like to keep them on a remote service to make sure I don't have to make backup copies (in case my hdd would fail somehow). I do work on *nix platforms (so windows specific solutions are not a choice here).

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  • Certificate Authentication

    - by Steve McCall
    I am currently working on deploying a website for staff to use remotely and would like to make sure it is secure. I was thinking would it be possible to set up some kind of certificate authentication where I would generate a certificate and install it on their laptop so they could access the website? I don't really want them to generate the certificates themselves though as that could easily go wrong. How easy / possible is this and how do I go about doing it?

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  • My servers been hacked EMERGENCY

    - by Grant unwin
    I'm on my way into work at 9.30 pm on a Sunday because our server has been compromised somehow and was resulting in a DOS attack on our provider. The servers access to the Internet has been shut down which means over 5-600 of our clients sites are now down. Now this could be an FTP hack, or some weakness in code somewhere I'm not sure till j get there. Does anyone have any tips on how I can track this down quickly. Were in for a whole lot of litigation if I dont get the server back up asap. Any help appreciated.

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