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  • A Security (encryption) Dilemma

    - by TravisPUK
    I have an internal WPF client application that accesses a database. The application is a central resource for a Support team and as such includes Remote Access/Login information for clients. At the moment this database is not available via a web interface etc, but one day is likely to. The remote access information includes the username and passwords for the client's networks so that our client's software applications can be remotely supported by us. I need to store the usernames and passwords in the database and provide the support consultants access to them so that they can login to the client's system and then provide support. Hope this is making sense. So the dilemma is that I don't want to store the usernames and passwords in cleartext on the database to ensure that if the DB was ever compromised, I am not then providing access to our client's networks to whomever gets the database. I have looked at two-way encryption of the passwords, but as they say, two-way is not much different to cleartext as if you can decrypt it, so can an attacker... eventually. The problem here is that I have setup a method to use a salt and a passcode that are stored in the application, I have used a salt that is stored in the db, but all have their weaknesses, ie if the app was reflected it exposes the salts etc. How can I secure the usernames and passwords in my database, and yet still provide the ability for my support consultants to view the information in the application so they can use it to login? This is obviously different to storing user's passwords as these are one way because I don't need to know what they are. But I do need to know what the client's remote access passwords are as we need to enter them in at the time of remoting to them. Anybody have some theories on what would be the best approach here? update The function I am trying to build is for our CRM application that will store the remote access details for the client. The CRM system provides call/issue tracking functionality and during the course of investigating the issue, the support consultant will need to remote in. They will then view the client's remote access details and make the connection

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  • Is it bad practice to initialize a variable to a dummy value?

    - by froadie
    This question is a result of the answers to this question that I just asked. It was claimed that this code is "ugly" because it initializes a variable to a value that will never be read: String tempName = null; try{ tempName = buildFileName(); } catch(Exception e){ ... System.exit(1); } FILE_NAME = tempName; Is this indeed bad practice? Should one avoid initializing variables to dummy values that will never actually be used? (EDIT - And what about initializing a String variable to "" before a loop that will concatenate values to the String...? Or is this in a separate category? e.g. String whatever = ""; for(String str : someCollection){ whatever += str; } )

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  • Are Domain Specific Languages (DSL) bad for the Common Programmer?

    - by iestyn
    I have lately been delving into F# and the new DSL stuff as in the Microsoft SQL Server Modelling CTP, and have some concerns. Will this new idea that will come about be bad for skilled programmers? Is code going to be dumbed down? I know I sound like a luddite, but this does worry me, after spending years of time practising in my craft, and now might be scuttled by genius from within. I am afraid, very afraid. Will I be now trapped in a job that only programs against a DSL and therefore every job that I work on, I have to learn a whole new DSL based on top of a Framework (.net Java), that I will only be allowed to touch certain parts of. I don't think the world is ready for DSL, but the sales pitch is deafening!

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  • is it a bad idea to load into memory 160000 variables in a php script?

    - by user1397417
    im processing a large file with sentences, i only care about the lines that have english or japanese, so while im reading the file, if i find english or japanese sentence, i want to just save it in an array and after finished reading, open another file for writting and output all the sentences in the array. this would result in me setting about 160,000 variables. all strings, some short some long. just wondering if its a bad idea to for memeory to set so many values? example line from the file: "1978033 jpn ?????????????????????"

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  • How to reduce timeout for bad password on disconnected laptop?

    - by Elroy Flynn
    I use a Windows 7 laptop computer. When not attached to my AD domain, if I enter an incorrect password, I have to wait approximately a full minute before the failure response comes back. When attached to the domain, the response is instant. I think that what's happening is that is that when my entry fails against the cached pw, Windows tries to reach the domain controller and the timeout for that operation is about 60s. Is there a registry entry that controls the timeout? I'd love to reduce it.

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  • Bad to be logged in as admin all the time?

    - by poke
    At the office where I work, three of the other members of the IT staff are logged into their computers all the time with accounts that are members of the domain administrators group. I have serious concerns about being logged in with admin rights (either local or for the domain). As such, for everyday computer use, I use an account that just has regular user privelages. I also have an different account that is part of the domain admins group. I use this account when I need to do something that requires elevated privilages on my computer, one of the servers, or on another user's computer. What is the best practice here? Should network admins be logged in with rights to the entire network all the time (or even their local computer for that matter)?

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  • Wordpress hacked. Disabled hacked site but bad traffic continues [closed]

    - by tetranz
    Possible Duplicate: My server's been hacked EMERGENCY My Ubuntu 10.04 LTS VPS has been hacked, probably via a WordPress site. I was alerted to it when I noticed the incoming traffic was unusually high. A WordPress site was littered with eval(base64_decode(...)) code in lots of files. My fault, I had some files writeable by www-data which shouldn't have been. I've disabled that site (a2dissite ... and restart Apache). This has reduced it but I am still getting some malware type traffic. My server runs several WordPress and Drupal sites and a home grown PHP site. I have captured traffic with tcpdump and looked at it Wireshark. It's reaching out to the login page of some Joomla sites, trying multiple logins. The traffic stops when I stop Apache. If I a2dissite every site and reload (not restart) Apache the traffic continues. At that point I have no virtual hosts running and no DocumentRoot in my apache2.conf so I don't know how Apache is still running something. I have searched the other sites with grep for likely looking php code with no success. I may have missed it but I haven't found anything suspicious in the Apache logs. I have mod-status running. I haven't really seen anything much there except that someone is still trying to do a POST to the theme page on the disabled WordPress site but they now get a 404. What should I be looking for? Are there any tools or whatever which would give me more info about how Apache is generating that traffic? Thanks

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  • How to manage credentials on multiserver environment

    - by rush
    I have a some software that uses its own encrypted file for password storage ( such as ftp, web and other passwords to login to external systems, there is no way to use certificates ). On each server I've several instances of this software, each instance has its own password file. At the moment number of servers is permanently growing and it's getting harder and harder to manage all passwords on all instances up to date. Unfortunately, some servers are in cegregated network and there is no access from them to some centralized storage, but it works vice versa. My first idea was to create a git repository, encrypt each password with gpg and store it there and deliver it within deployment system, but security team was not satisfied with this idea and as it is insecure to store passwords in repository even in encrypted view ( from their words ). Nothing similar comes to my mind. Is there any way to implement safe and secure password storage with minimal effort to manage all passwords up-to-date? ps. if that matters I've red hat everywhere.

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  • Password best practices

    - by pcampbell
    Given the recent events with a 'hacker' learning and retrying passwords from website administrators, what can we suggest to everyone about best practices when it comes to passwords? use unique passwords between sites (i.e. never re-use a password) words found in the dictionary are to be avoided consider using words or phrases from a non-English language use pass phrases and use the first letter of each word l33tifying doesn't help very much Please suggest more!

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  • HDD is not recognized/initialized via USB, only via SATA - is a reformat through USB a bad idea?

    - by Wuschelbeutel Kartoffelhuhn
    I have a 4TB Hitachi HDD that I purchased in Europe (I use it as a backup disk); I use Windows 7. When I connect it to a SATA port, it is recognized in Windows Explorer and gives no problems, even after transferring 3TB at a time or after being on for days. When I connect it via a SATA-to-USB2.0 adapter, it is also recognized, but when I transfer a large amount of data, it will intermittently stop being recognized by Windows Explorer and cancel the transfer. When I connect it via an external enclosure (which is technically a SATA-to-USB3.0 adapter), it does not display at all in Windows Explorer, but Disk Management will show the drive, albeit uninitialized (prompts for format). I only got the external enclosure because I want to backup my files more conveniently (instead of having to open the computer case each time). Do you advise against reformat/initialization via the external enclosure? Can it screw up things in an irrevocable way (Master Boot Record etc.)?

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  • Is mismatched firmware on drives in a raid-6 a bad thing?

    - by bwerks
    Hi all, I recently expanded a raid-1 to a raid-6 with six drives. I ordered all four of the new drives from the same place, and all of them were advertised to be the same drives as the original two--Seagate 15krpm 146gb. However, when I was looking at the drives in the perc6/i utility, one of them appeared to be an earlier firmware version; it had S515, compared to the other five drives with S527. Sure enough, after inspecting the drive itself, the label advertised the earlier firmware version. Running Dell's SAS firmware upgrade utility should have in theory moved them all up to S52A, but when I ran it it moved the S527 drives up to S52A, and left the S515 drive untouched. Is this something to be worried about? If it's something that should be corrected, is there a way to target a particular drive for upgrade since the firmware utility didn't seem to do it by itself?

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  • My (C:) drive changed from Basic to Dynamic, is this bad?

    - by bbman225
    I'm really worried here. My computer still runs, so I take this as a good sign, however let me explain my situation: I am trying to install Ubuntu Linux, and the installer was having problems, so I went back into the partitioning tool on my Windows 7 (after having successfully shrunken my C drive and created 55 GB unallocated space) and I attempted to create a new partition out of the 55 GB and make it a simple NTFS drive so that I could let the installer wipe it clean again and format it in whatever file system it prefers. Now, after googling it and running through the process I noticed that all of my drives, including the C drive and the one I just made changed from type "Basic" to type "Dynamic." What is a dynamic drive and should I be worried?

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  • Website content hosted with Google. Good or bad?

    - by user305052
    I recently decided to host my styles.css and various scripts on Google Docs and link them into my website. I also have all my images hosted through Picasa so that they too will load much faster and consistently across users. My site has most of its traffic from Japan, Africa, and South America, so I assume there will be a performance boost for my users since my server is hosted in Hong Kong. I (in Canada) have measured my load times to be half of what they used to be. Basically it's a free CDN for my personal stuff. I'm not too sure about all of this yet, so here's my question: what are the caveats of this setup? EDIT: So after rummaging through the ToS of both Picasa and Docs, there doesn't seem to be anything wrong with this kind of use.

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  • Either, nginx+php-fpm bad config or nginx+php-fpm cannot handle high query?

    - by The Wolf
    I have wordpress installed in my server configured(hopefully with nginx+php-fpm+mariaDB). I am trying to import using wordpress importer a 1.5MB xml file. Everytime I try to upload it using the importer, it got cut of... meaning just blank screen result.. Here is my error log: actually I just posted 2 of the errors [error] 858#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: xx.xxx.xx.xx, server: xxx.com, request: "GET xxxx.html HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "xxx.com" [error] 858#0: *13 connect() failed (111: Connection refused) while connecting to upstream, client: xxx.x.xx.xx, server: xxx.com, request: "GET xxxx.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "xxx.com" I don't know what is the reason why it can't process the wordpress export .xml. I already increased max_file_upload & etc., but nothing happens. Hope somebody can help me. Here are my conf: nginx.conf user nginx; worker_processes 8; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; sendfile on; #tcp_nopush on; server_tokens off; keepalive_timeout 65; fastcgi_read_timeout 500; #gzip on; client_max_body_size 2M; php-fpm.conf ;;;;;;;;;;;;;;;;;;;;; ; FPM Configuration ; ;;;;;;;;;;;;;;;;;;;;; ; All relative paths in this configuration file are relative to PHP's install ; prefix. ; Include one or more files. If glob(3) exists, it is used to include a bunch of ; files from a glob(3) pattern. This directive can be used everywhere in the ; file. include=/etc/php-fpm.d/*.conf ;;;;;;;;;;;;;;;;;; ; Global Options ; ;;;;;;;;;;;;;;;;;; [global] ; Pid file ; Default Value: none pid = /var/run/php-fpm/php-fpm.pid ; Error log file ; Default Value: /var/log/php-fpm.log error_log = /var/log/php-fpm/error.log ; Log level ; Possible Values: alert, error, warning, notice, debug ; Default Value: notice ;log_level = notice ; If this number of child processes exit with SIGSEGV or SIGBUS within the time ; interval set by emergency_restart_interval then FPM will restart. A value ; of '0' means 'Off'. ; Default Value: 0 ;emergency_restart_threshold = 0 ; Interval of time used by emergency_restart_interval to determine when ; a graceful restart will be initiated. This can be useful to work around ; accidental corruptions in an accelerator's shared memory. ; Available Units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;emergency_restart_interval = 0 ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes daemonize = no ;;;;;;;;;;;;;;;;;;;; ; Pool Definitions ; ;;;;;;;;;;;;;;;;;;;; ; See /etc/php-fpm.d/*.conf [root@host etc]# vim php-fpm.conf [root@host etc]# vim php-fpm.conf ; Default Value: notice ;log_level = notice ; If this number of child processes exit with SIGSEGV or SIGBUS within the time ; interval set by emergency_restart_interval then FPM will restart. A value ; of '0' means 'Off'. ; Default Value: 0 ;emergency_restart_threshold = 0 ; Interval of time used by emergency_restart_interval to determine when ; a graceful restart will be initiated. This can be useful to work around ; accidental corruptions in an accelerator's shared memory. ; Available Units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;emergency_restart_interval = 0 ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes daemonize = no ;;;;;;;;;;;;;;;;;;;; ; Pool Definitions ; ;;;;;;;;;;;;;;;;;;;; ; See /etc/php-fpm.d/*.conf ps aux [root@host etc]# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.1 2900 1380 ? Ss Jun02 0:00 init root 2 0.0 0.0 0 0 ? S Jun02 0:00 [kthreadd/9308] root 3 0.0 0.0 0 0 ? S Jun02 0:00 [khelper/9308] root 124 0.0 0.0 2464 576 ? S<s Jun02 0:00 /sbin/udevd -d root 460 0.0 0.1 35976 1308 ? Sl Jun02 0:00 /sbin/rsyslogd -i /var/run/syslogd.pid -c 5 root 474 0.0 0.0 8940 1028 ? Ss Jun02 0:00 /usr/sbin/sshd root 481 0.0 0.0 3264 876 ? Ss Jun02 0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid root 491 0.0 0.1 6268 1432 ? S Jun02 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/host.busilak.com. mysql 584 0.1 6.8 679072 71456 ? Sl Jun02 0:04 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --use root 586 0.0 0.3 12008 3820 ? Ss Jun02 0:01 sshd: root@pts/0 root 629 0.0 0.0 9140 756 ? Ss Jun02 0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2 root 630 0.0 0.0 9140 520 ? S Jun02 0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2 root 645 0.0 0.1 12788 1928 ? Ss Jun02 0:01 sendmail: accepting connections smmsp 653 0.0 0.1 12576 1728 ? Ss Jun02 0:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue root 691 0.0 0.1 7148 1184 ? Ss Jun02 0:00 crond root 698 0.0 0.1 6272 1688 pts/0 Ss Jun02 0:00 -bash root 1006 0.0 0.0 7828 924 ? Ss 00:30 0:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf nginx 1007 0.0 0.1 8156 1724 ? S 00:30 0:00 nginx: worker process nginx 1008 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1009 0.0 0.1 8020 1356 ? S 00:30 0:00 nginx: worker process nginx 1011 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1012 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1013 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1014 0.0 0.1 8024 1360 ? S 00:30 0:00 nginx: worker process nginx 1015 0.0 0.1 8024 1344 ? S 00:30 0:00 nginx: worker process root 1030 0.0 0.2 25396 2904 ? Ss 00:30 0:00 php-fpm: master process (/etc/php-fpm.conf) apache 1031 0.0 1.9 40700 20624 ? S 00:30 0:00 php-fpm: pool www apache 1032 0.0 2.0 41924 21888 ? S 00:30 0:01 php-fpm: pool www apache 1033 0.0 1.9 41212 20848 ? S 00:30 0:01 php-fpm: pool www apache 1034 0.0 1.9 40956 20792 ? S 00:30 0:01 php-fpm: pool www apache 1035 0.0 2.0 41560 21556 ? S 00:30 0:02 php-fpm: pool www apache 1040 0.0 1.8 39292 19120 ? S 00:30 0:00 php-fpm: pool www root 1125 0.0 0.0 6080 1040 pts/0 R+ 01:04 0:00 ps aux netstat -l [root@host etc]# netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:ssh *:* LISTEN tcp 0 0 localhost.localdomain:smtp *:* LISTEN tcp 0 0 localhost.locald:cslistener *:* LISTEN tcp 0 0 *:mysql *:* LISTEN tcp 0 0 *:http *:* LISTEN tcp 0 0 *:ssh *:* LISTEN Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 60575947 /var/run/saslauthd/mux unix 2 [ ACC ] STREAM LISTENING 60574168 @/com/ubuntu/upstart unix 2 [ ACC ] STREAM LISTENING 60575873 /var/lib/mysql/mysql.sock Hope somebody can help me to figure out what is the problem.

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  • Can a malicious hacker share Linux distributions which trust bad root certificates?

    - by iamrohitbanga
    Suppose a hacker launches a new Linux distro with firefox provided with it. Now a browser contains the certificates of the root certification authorities of PKI. Because firefox is a free browser anyone can package it with fake root certificates. Thus a fake root certificate would contain a the certification authority that is not actually certified. Can this be used to authenticate some websites. How? Many existing linux distros are mirrored by people. They can easily package software containing certificates that can lead to such attacks. Is the above possible? Has such an attack taken place before?

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  • Can a Linksys Router be the cause of bad speeds on a 1.5 mbps link.

    - by gramware
    We use a Linksys 5-port router at a smal organization with about 20 employees. We recently acquired a 1.5 mbps fibre link, but sometimes the link goes down and speeds are still low. On enquirey from the ISP, this was part of the response, However there maybe throttling due to the router in place. A Linksys is a low end router and may be unable to carried traffic of up to 1536Kbps. We are in a position to deploy a Cisco 871 router on test for 2 wks to eliminate that possibility. Also kindly advise the destination of the ping results they look to high. How true is that about the router throttling the network and need for a bigger one.

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  • Why is it a bad idea to use multiple NAT layers or is it?

    - by iamrohitbanga
    The computer network of an organization has a NAT with 192.168/16 IP address range. There is a department with a server that has an IP address 192.168.x.y and this server handles hosts of this department with another NAT with the IP address range 172.16/16. Thus there are 2 layers of NAT. Why don't they have subnetting instead. This would allow easy routing. I feel multiple layers of NAT can cause performance losses. Could you please help me compare the two design strategies.

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  • Bad Resolution. Running Three screens at the same time

    - by Carl
    Hi I am currently using three screens at the same time with my ATI 5770 & an active displayport converter. The thing is that the third screen ( the one that is using the active displayport converter ) is showing terrible resolution compared to my other two screens. ( Samsung syncmaster p23 ) two of my screens got a max resolution of 1920* 1090, meanwhile the third on is only capable of 1600 * 1200. Do any of u guys got any solution to this problem? Btw, This is how the Active Displayport converter looks like http://accessories.us.dell.com/sna/products/Cables/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=330-5521#Overview

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  • Driver Max - Updating drivers that are not digitally signed - good or bad?

    - by Paul
    Win7 Home Prem 32-bit I am currently using DriverMax to keep my drivers up to date. Sometimes it suggests that a newer driver is available for download but the driver is not digitally signed. Is it safe to update to an unsigned driver or not? What are the implications of signed vs unsigned drivers? I always create a system restore point before updating any drivers anyway and i know i can rollback a driver.

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  • Is sending email from EC2 / Rackspace Cloud a bad idea?

    - by Michael Buckbee
    In this article it mentions that TrendMicro is now treating all emails from Amazon's EC2 as coming from "Dial Up Users": likely to be spam and this is creating severe deliverability issues with their emails. We're having all kinds of issues sending email from our app servers on Rackspace cloud (which may or may not be DUL'd) and I wonder if this isn't just a losing battle and we should try to get a different host for our SMTP server.

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  • Bad Intel DQ965GF motherboard? Fails memtest, but memory is good.

    - by Boden
    I've got a machine with a DQ965GF motherboard. Two days ago it started locking up hard. Ran memtest 3.3, 1.7, and TestMem 4. TestMem just freezes, memtest failed on moving 8 bit inversions. Letting memtest run eventually causes the system to restart. I pulled memory sticks one by one, and then replaced the memory with a couple of known good sticks. No luck. I switched power supplies, didn't help. Swapped video cards just to be safe. No help. When I start the machine I get a single beep before it POSTs. According to the manual, a single beep means: 1 beep - Refresh Error (with nothing on the screen and it is not a video problem) I'm assuming that the motherboard has failed since it's obviously not a RAM or power issue. Do you agree? NOTE: I also tried resetting BIOS defaults, and even flashed the BIOS to the latest version. I also ran the Mersenne Prime Test and the CPU seems to click along just fine. (Tried logging in to superuser with openid but it's not working for me today. Hope this gets through)

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  • Is it a bad idea to make roaming profile share available offline?

    - by Bryan
    This is regarding a Windows 2008 R2 domain. The Documents, Desktop, Application Data folders are all redirected to users' home directory (mapped as Z:). The users home directory is configured to be offline for mobile users. User profiles are configured as roaming, and located on a separate share (not mapped as a network drive), just accessed via an UNC path. Would it be a good or idea to make the roaming profile share available offline for mobile users using the caching option "All files and programs that users open from the share will be automatically available offline"?

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  • SMTP IP - Bad reputation, how do I work around?

    - by Louis van Tonder
    I recently had a spamming incident and got listed on a blacklist. I have rectified the issue, removed from the blacklist, but my IP reputation is now classified as a high volume sender. What is the best way to rectify this? I have an additional IP address. I am thinking configure my server to make outbound SMTP connections using the other IP. My questions are: How long does it take for my reputation to stabilize again? How do I configure my server/mailserver to use a specified outbound IP? Setup: Server 2008 Web hMailserver 2 IPs configured on one NIC Cloud based server Your urgent help would be greatly appreciated. Cheers

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  • How bad is it to use a virtual file system with VMWare?

    - by user37244
    IT is running a series of VMs that we'd like to see optimized further: if the VMs' are Windows XP, storing their NTFS images out to the virtual disk (ext3) provided by Linux/VMWare, how much of a hit are we taking - as opposed to having a partition of the host hard drive formatted NTFS to eliminate the translation layer and the extra level of operating system IO preparation?

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