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-2
votes
1answer
44 views

Understanding linux /etc/shadow file structure (Linux) [closed]

Consider the following line taken from /etc/shadow file: root:$1$NFEf74q.$bmukkxAq9dOMJINgEtP7u0:15258:0::::: From this I understand that the hashing algorithm is md5 ($1) and starting from third $ ...
0
votes
1answer
22 views

How to generate Amazon Glacier SHA-256 Tree Hash for a file locally?

To verify my files have uploaded correctly, is there a tool to generate the Amazon Glacier Tree Hash SHA-256 for files locally?
2
votes
0answers
92 views

Inconsistent data transfer throughout Ubuntu server causes system instability and data corruption [closed]

Update 2 We replaced the CPU, and all is good. It was a busted CPU! Update We replaced the motherboard, and are still getting the exact same problem. Does this mean it is a faulty CPU? What else ...
1
vote
3answers
1k views

ESXi 5.5 NIC teaming for Load balancing using Cisco Etherchannel

I am using Cisco 3750G stacked switch configured with etherchannel and connected to ESXi Server configured with NIC teaming; Load balancing as router based on IP Hash. Cisco Switch configuration: ( ...
2
votes
1answer
111 views

Pass a text file of MD5 Hashes into md5deep

I am using md5deep to try take a list of md5 hashes from a list of files (approximately 100,000 hashes) and I'm comparing them to the NSRL hash list (15gb text file). I'm trying to accomplish 1 ...
0
votes
2answers
228 views

RADIUS-sever: Hashing password before checking

I do have to set up a RADIUS server for authentication with a captive portal of pfSense. Unfortunately, all passwords in the RADIUS' database are hashed with a certain algorithm. I do use a ...
0
votes
2answers
394 views

Does openldap support pbkdf2 hash algorithm?

Since pbkdf2 (Password-Based Key Derivation Function 2) is a more secure hash function, so I wonder if current openldap implementation support pbkdf2 (pbkdf2_sha256 for example)? I have found some ...
3
votes
1answer
162 views

How to organize millions of static files to serve efficiently over the web?

I'd like to create a service to serve several hundred thousand smaller files (from 5kb to 500kb, mostly around 10-100kb). Think of it as a kind of gravatar.com which serves those little avatar pics on ...
2
votes
2answers
182 views

Couchdb attachment hashes don't match attachment content

While doing some auditing of a database, I found that some attachment content did not match the hashes given in the document's _attachments map. I tested this by downloading the document and ...
1
vote
0answers
103 views

ECDSA hash from OpenSSL command-line

Although it seems relatively easy to build an ECDSA hash programmatically, I've exhaustively searched for how to do it via command-line (in order to validate my results), and have found no examples of ...
4
votes
2answers
642 views

Do multiple Nginx servers load balance the same IP address to the same backend with the ip_hash directive?

I have two separate Nginx machines. The domain uses round-robin DNS and has two A records, one for each of the two frontend Nginx server. Both Nginx servers use the ip_hash directive and proxy ...
0
votes
1answer
132 views

update mysql passwords to new hash format without knowing the original passwords

I have a user who updated his sql connector to 6.6.5 and not he cannot run his code due to the passwords being hashed in the older format (pre 4.1?). I would like to update all of the mysql accounts ...
1
vote
2answers
56 views

Download and save a file with proof that it was downloaded from a specific server/url on a specific date?

Assuming the file was downloaded over http is this possible? I'm guessing there could be some way to do it using a hash and a timestamp however I'm not sure how you could prove nothing was tampered ...
1
vote
1answer
113 views

Correct procedure for RKHunter file changes

I run RKHunter on Ubuntu as well as as automated system / package updates. Last night I started receiving RKHunter warnings as listed below and whilst it's obviously easy for me to just do: rkhunter ...
2
votes
1answer
531 views

What password hash algorithm does each version of CentOS use by default?

I'm looking for a table of CentOS versions and corresponding default password hash algorithms. Google searches didn't reveal any matches that look like they have all the information in one place. ...
0
votes
1answer
365 views

Tools for compare huge number of files in two different server [closed]

I have question. Have you ever use any tools that can fast compare the identical of huge number of files (let's say thousands files with total size up to 15 GB) in two different windows 2003 server? I ...
0
votes
1answer
276 views

puppet manifest usage with hash

I'm struggling to get this to work and don't understand where I'm going wrong, can someone please guide me on how to correct? Basically I want to get an array in my nodes.pp, which is then used by my ...
0
votes
1answer
98 views

Use of hash in defined type for puppet

I'm trying to use a hash for the first time in puppet, so in my nodes.pp I'm going to use this: node test1.example.com { netset::int::vconf {"servers" : label1 => { 'comment' => ...
1
vote
0answers
57 views

Courier-imap (authlib) - supported hashes?

Which hashes are supported by courier-imap (or maybe its courier-authlib job?)? Ive tried passwords hashed with {SHA}, {SSHA} and {SSHA256}. Only first seems to work, but i need to use last one ...
0
votes
3answers
504 views

Monitoring folder diffs across servers with zabbix

Problem: I want to make sure that a certain folder is equal regarding it's contents across my servers. I do not want an automatic filesync to keep them equal, changing is done manually. My initial ...
1
vote
1answer
2k views

How are password encrypted in iRedMail?

I'm preparing new mail system with iRedMail. My developers needs info about how are hashes of password generated. I want to know how iRedMail generates hashes, is any salt used and what algorithm? I ...
5
votes
2answers
1k views

How are the hashes in /etc/shadow generated?

I was reading the Wikipedia article on the shadow file and it mentioned the format of the lines is like this: $id$salt$hashed So, my question is, how does it work? I tried to calcualte the hash ...
0
votes
1answer
109 views

Is it possible to store Hashed data in a different field than userPassword in LDAP

I've been asked to store hashed data in a LDAP server. Putting hashed passwords is easy but I'm not sure if LDAP allows to store data like email hashed or even encrypted. Creating a LDIF file with a ...
1
vote
1answer
338 views

PBKDF2 (or BCrypt) hash implementation for Apache HTTPD or APR

Does anyone know of (simple) way to use PBKDF2 or BCrypt as a password hash within Apache HTTPD. The general scenario is that I have a resource in /private that I would like to restrict to a given ...
1
vote
3answers
134 views

Reset and then restore mysql password

I have linux root password. There's MySQL server on that machine. One of the site's ini was rewritten and now it can't reach the mysql database. I don't have mysql root to change the password for ...
3
votes
2answers
833 views

Why does Microsoft.com have a TXT record with only a hash code? [closed]

What is the purpose of the TXT record in the root Microsoft.com zone? I don't see any reasonable tie into SPF, SenderID, DomainKeys, or even TLS-OBC or DANE for TLS. microsoft.com text = ...
0
votes
2answers
1k views

Change password hashing algorithm for SuSE users from blowfish to MD5

I have a network of roughly 1000 SuSE machines with 20-200 users on each. The password hashing algorithm used is the default i.e. blowfish. In order to check, whether a user has used a dictionary word ...
3
votes
2answers
2k views

changing shadow hash algorithm to bcrypt: how to rehash

I want to change my SHA512 shadow file to use bcrypt as shown in this question/answer: Enable blowfish-based hash support for crypt The problem is that i run into a chicken and egg problem, because ...
2
votes
1answer
158 views

Apache send HTML without comments

I have a problem with my Apache Webserver, I got 2 environments: Development and Production. Both have the same configuration, but the first one sends the HTMLs exactly as they've been created, the ...
5
votes
1answer
235 views

How to distribute files and folders to handle large number of files

I want to manage a huge number of files on my server (say millions). It is needed to save files in two or three levels of folders to keep the number of files in each folder low. On the other hand, it ...
1
vote
3answers
3k views

Any way to see an Active Directory password?

Before you jump to conclusions, let me explain. We have a password reset tool that is not working. For some reason when you use it, it resets your password to some unknown value (Not what you changed ...
1
vote
2answers
632 views

What are the side-effects of disabling the old Lan Manager hash?

All of the computers in our domain are running Windows XP/Server 2003 and above (with one exception, a Win2Ksp4 server, which is not a domain controller). I intend to disable the LM hashes via group ...
4
votes
1answer
2k views

What kind of algorithm does .htpasswd uses?

I am trying to generate this kind of hashes programmatically: axF3s9cdEnsNP But I can't identify what kind of hash it is. The hash comes from a .htpasswd file. All the online htpasswd generators I ...
1
vote
3answers
259 views

Hash function in shell that could be used for an ssh port from (say) hwaddr of eth0

I have a growing number of remote machines that ssh home and setup a connection to allow subsequent access via tunnel so I can get into them for maintenance. Currently, I must manually configure ...
0
votes
3answers
836 views

different hash length in /etc/shadow

Here is the output of /etc/shadow for two different users stored on the system: usr1:$1$zgKwt6aQ$gXxsMLgcxa/u6rmq5QseP.:14307:0:99999:7::: ...
3
votes
1answer
3k views

Php: How to enable blowfish hashing on a debian server

I'm trying to make blowfish hashing available to php on a debian server. Taken from the php manual on the crypt() function ( http://php.net/manual/en/function.crypt.php ), the following code checks ...
0
votes
3answers
786 views

Automate hashing for each file in a folder?

I have quite a few FTP folders, and I add a few each month and prefer to leave some sort of method of verifying their integrity, for example the files MD5SUMS, SHA256SUMS, ... which I could create ...
4
votes
1answer
393 views

John the Ripper Custom Rule

I am using John the Ripper to crack passwords in a copy of the passwd file at my work. I want to alert users that have weak passwords. I happen to know that many accounts have the default password ...
0
votes
2answers
476 views

Does anyone know a good free SHA1 hash generator?

Does anyone know a good free SHA1 hash generator? I am trying to has some info on the client side before post it back. I need a free SHA1 hash generator. Thanks
0
votes
1answer
918 views

How do I replicate a sha256 hash with salt using OpenSSL command line?

Using PHP's crypt function as follows, I can do a sha256 hash with salt and multiple rounds. php -r "echo crypt('foo','\$5\$rounds=5000\$saltsaltsaltsalt');" produces: ...
1
vote
3answers
2k views

In Windows XP, is it possible to disable user credential caching for particular users

I understand that when windows caches user credentials, these can sometimes be used by malicious parties to access other machines once a machine containing cached credentials is compromised, a method ...
3
votes
2answers
2k views

Can “tar” backup incrementally?

I have my home folder with a few GB. Is it possible to run tar on it, create a home.tar.gz, and then for changed files, it creates home1.tar.gz only with modified files from previous tar (thus being ...
0
votes
2answers
522 views

Ubuntu - Is there any programme for MD5 rainbowtables on Ubuntu?

I've been reading about Rainbow Tables recently. There's a few webpages that will do a reverse look up for an MD5 hash. Is there any programme on Ubuntu that lets me do this? Is there something in ...
3
votes
1answer
1k views

Hash to create Hex Color Codes from string (in bash)

I am wanting to produce graphs of my server traffic using rrdtool, but it expects hex color codes for each line on the graph. Since I am wanting to iterate over a varying bunch of domain data ...
0
votes
1answer
218 views

SHA Hash of large files in Windows

I need a way of verifing the state of some VHD test environments. I am thinking I could generate SHA or MD5 hashes. How can you generate SHA hashes for large files, some of these VHDs are more than ...
3
votes
1answer
426 views

ssh key with image fingerprint

SSH key fingerprint is shown by running this command: ssh-keygen -lf /etc/ssh/ssh_host_rsa_key.pub and the fingerprint is some strange code. Is there a way to turn this code into an image hash or ...
3
votes
8answers
4k views

md5sum repeatedly gives different checksum for same file on same machine

I have a very small and quite old hard drive disk, about 32G. On to this disk I have copied a largish tar file, about 5G. When I run md5sum to generate a checksum on this file I repeatedly get ...
2
votes
5answers
1k views

Utility to notify when website files are changed

Does any one know of a (preferably free) windows utility that recursively hashes all the files in a directory tree every x minutes and sends a notification if any files have changed. I want to have a ...
11
votes
1answer
3k views

Enable blowfish-based hash support for crypt

How do I enable crypt_blowfish support for shadowed passwords and PHP on a Linux (Debian) server? I'm referring to the OpenBSD-style Blowfish-based bcrypt, known in PHP as CRYPT_BLOWFISH. As far as ...