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  • Deny directory browsing in a Proftpd / Ubuntu Installation

    - by skylarking
    I used this guide to set up a Proftpd installation an Ubuntu 8.04 server... Works well, but the generic user ( userftp ) can run ls and is able to change to any Directory and browse freely on the server ..from the root / and upwards.. I added this line to etc/shells /bin/false in hopes that that would prevent this ... I really only want the userftp account to be able to upload to the generic /home/FTP-Shared directory, and be able to do nothing else on the server. How is this accomplished ... This is a headless Ubuntu box..and I am using CLI only .. no GUI admin tools

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  • How to get full write permission on my second drive after dual boot?

    - by Shaul
    I had a WinXP installation on my hard drive. Then I bought a 2nd drive and installed Win7. Dual boot working fine. But when I'm in the Win7 environment, it appears that I don't have full admin permission on the "D" drive (that's the drive with WinXP). Even though the user I'm logged in as has admin permissions, I have to run my apps with administrator privileges in order to get write access to the D drive. This is not the case when I do stuff on the C drive. I could just get into running those apps that access the D drive in admin mode, but that seems like overkill. Is there some secret switch I can flip so that my D drive acts like my C drive, security-wise?

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  • Any problems with using a 301 redirect to force https traffic in IIS?

    - by Jess
    Is there any problem with using a 301 redirect to force all traffic to go to a secure-only site? We originally had redirect rules, but enforcing SSL-only seemed more secure. Here is how we set it up: Site 1: https://example.com/ Require SSL set Bound to 443 only Site 2: http://example.com Bound to 80 only Empty folder - no actual html or other data 301 Redirects to https://example.com This seems to work beautifully, but are there any issues with doing this? Would any browsers not recognize the 301 redirect, or could there be security warnings during the redirect?

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  • Window 2003 Server - Logon Failure error message in Event Viewer

    - by user45192
    Hi guys, I received alot of event logged in the event viewer with this message. I notice is always the same user id which encounters this error. The user id is use by an application to access the database. However, this account does not exits on this server. How do I trace the services/program use by this user id which causes these error messages? Reason=Unknown user name or bad password&&User Name=&&Domain=&&Logon Type=3&&Logon Process=NtLmSsp&&Authentication Package=NTLM&&Workstation Name=&&Caller User Name=-&&Caller Domain=-&&Caller Logon ID=-&&Caller Process ID=-&&Transited Services=-&&Source Network Address=-&&Source Port=-&&User=SYSTEM&&ComputerName=

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  • Associate email account with "Personal Folders" Outlook data file?

    - by TheLQ
    In the process of migrating email servers I've run into an interesting problem: In Outlook 2007 you have the default "Personal Folders" item. This contains the email for the account that was origionally setup with Outlook. My issue is that I have deleted the account associated with that and created an entirely new account. So now I have "Personal Folders" and "[email protected]". However I can't delete "Personal Folders". nor associate "[email protected]" with that PST file. Deleteting it in Outlook (Tools Account Settings Data Files) gave the error "The default data file cannot be removed, because it is your default delivery location. After you have selected a different default delivery location, your current file can be removed." Deleting the PST file itself (outlook.pst) made outlook demand where its default file . would be. So I selected my "[email protected]" PST file and restarted Outlook. Now "Personal Folders" is called "[email protected]", but I still have a duplicate account called this. Which is bad. Worse, my email is associated with the duplicate PST, not the default. How can I associate my email with my default PST or delete the default PST entirely? Luckily I have backu

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  • Run application with other user

    - by user62367
    OS: Fedora 14 GUI: GNOME I need to run an application with another user then the "default" (normally used). Purpose: create a ".desktop" file on my desktop to run e.g.: Google Chrome with another user (NOT ROOT! - so beesu doesn't count.) There aren't any gksu, or kdesu packages in Fedora 14. Why? So i want to create a user with "adduser SOMEONE", and i want to run e.g.: Google Chrome with "SOMEONE" - then it will have minimum permissions, "more security". Thank you!

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  • Setting permissions on user accounts

    - by Ron Porter
    We would like to lock a couple of accounts to prevent even domain admins from resetting the password without already knowing the current password. From what I can see in the permission sets, this looks possible. Anything I've found on the subject recommends against altering default permissions, but doesn't go into detail why. Assuming that domain admin retains the ability to reset passwords without knowing current passwords is it reasonable to prevent password resets on the domain admin account and maybe a couple of others? If not, why not?

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  • Preventing - Large Number of Failed Login Attempts from IP

    - by Silver89
    I'm running a CentOS 6.3 server and currently receive emails entitled "Large Number of Failed Login Attempts from IP" from my server every 15 minutes or so. Surely with the below configured it should mean only the person using the (my static ip) should be able to even try and log in? If that's the case where are these remote unknown users trying to log into which is generating these emails? Current Security Steps: root login is only allowed without-password StrictModes yes SSH password login is disabled - PasswordAuthentication no SSH public keys are used SSH port has been changed to a number greater than 40k cPHulk is configured and running Logins limited to specific ip address cPanel and WHM limited to my static ip only hosts.allow sshd: (my static ip) vsftpd: (my static ip) whostmgrd: (my static ip) hosts.deny ALL : ALL

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  • How to disable Utility Manager (Windows Key + U)

    - by Skizz
    How do I disable the Windows Key+U hotkey in Windows XP? Alternatively, how do I stop the utility manager from being active? The two are related. The utilty manager is currently providing a potential security hole and I need to remove it*. The system I'm developing uses a custom Gina to log in and start a custom shell. This removes most Windows Key hotkeys but the Win+U still pops up the manager app. Update: Things I've tried and don't work: NoWinKeys registry setting - this only affects explorer hotkeys; Renaming utilman.exe - program reappears next login; Third party software - not really an option, these machines are audited by the clients and additional, third party software would be unlikely to be accepted. Also, the proedure needs to be reasonably straightforward - this has to be done by field service engineers to existing machines (machines currently in Russia, Holland, France, Spain, Ireland and USA). * The hole is via the internet options in the help viewer the utility app links to.

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  • Best client and server antivirus for 5 user office?

    - by drpcken
    I'm setting up an Active Directory environment for 5 users (very small) and I'm wondering what is the best antivirus for clients (Windows 7) and servers (Server 2008 R2 x64)? I use Symantec Corp at my organization (50+ users) but I think that is overkill for this company. I wanted to use Microsoft Security Essentials for the clients (I use it for home machines and it's the best free AV in my opinion) but I don't think it will work on the Servers (3 servers, PDC, TS, and File). They are behind a Sonicwall TZ 200. What would be the best. Free would be even better. Thank you!

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  • Why would Remote Assistance work but not Remote Desktop?

    - by Craig Johnston
    I have managed to get Remote Assistance working between two XP-Pro machines, but as soon as I try Remote Desktop I can't even get to the login screen without an error which gives a list of possibilities and concludes with "See your network administrator", which isn't very helpful. I have ramped up the security level on Remote Desktop including turning on encryption etc. Could this be the problem? I will only get a few hours on the machine at a time so I need to be well-prepared before I attack this problem again. Any ideas?

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  • Ownership/permissions of uploaded files

    - by Cudos
    Hello. I want to find out if I am on the right track. My script uploads files to the directory "images". The directory has this setup: owner/group = www-data Permissions = 700 Questions: Is this a good way to secure the directory from a hacker uploading files? Will the hacker be able to upload the files directly to the directory? Note: I have a bunch of other security measures in my upload script + an .htaccess script in the directory that disables script Execution. I just what to know if the permissions on the directory is sensible. I run apache 2.2

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  • Which modules can be disabled in apache2.4 on windows

    - by j0h
    I have an Apache 2.4 webserver running on Windows. I am looking into system hardening and the config file httpd.conf. There are numerous load modules and I am wondering which modules I can safely disable for performance and / or security improvements. Some examples of things I would think I can disable are: LoadModule cgi_module others like LoadModule rewrite_module LoadModule version_module LoadModule proxy_module LoadModule setenvif_module I am not so sure they can be disabled. I am running php5 as a scripting engine, with no databases, and that is it. My loaded modules are: core mod_win32 mpm_winnt http_core mod_so mod_access_compat mod_actions mod_alias mod_allowmethods mod_asis mod_auth_basic mod_authn_core mod_authn_file mod_authz_core mod_authz_groupfile mod_authz_host mod_authz_user mod_autoindex mod_dav_lock mod_dir mod_env mod_headers mod_include mod_info mod_isapi mod_log_config mod_cache_disk mod_mime mod_negotiation mod_proxy mod_proxy_ajp mod_rewrite mod_setenvif mod_socache_shmcb mod_ssl mod_status mod_version mod_php5

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  • openSuse full disk encryption

    - by djechelon
    I'm a proud Suser. I'm about to reinstall 12.2 on my ASUS N76VZ (UEFI x64 laptop). Since I'm very sensitive about laptop security against theft or unwanted inspection, I chose to use BitLocker with USB dongle in Windows 7. When installing Suse the last time I found that only the home partition (separated from root) was capable of being encrypted. Does Suse offer a full disk encryption solution like BitLocker that I haven't discovered yet? Or is encrypting home partition the only way to protect data? Encrypting only home is feasible as one stores personal data in home, but I still would like to encrypt the whole thing! Also, using a hardware token (no TPM available) for unlocking is preferred to password, if possible! Thanks

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  • Identifying program attempting to install certificate on windows

    - by R..
    I'm trying to help a friend using Windows (which I'm not an expert on by any means) who's experiencing malware-like behavior: a dialog box is repeatedly popping up reading: You are about to install a certificate from a certification authority (CA) claiming to represent: CE_UmbrellaCert Warning: If you install this root certificate, Windows will automatically trust any certificate issued by this CA. Installing a certificate with an unconfirmed thumbprint is a security risk. If you click "yes" you acknowledge this risk. AV and anti-malware scanners don't detect anything. My friend hasn't accepted installing the certificate, but whatever program is trying to install it keeps retrying, making the system unusable (constant interruptions). Is there any way to track down which program is making the attempt to install it so this program can be uninstalled/deleted?

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  • Is visiting HTTPS websites on a public hotspot secure?

    - by Calmarius
    It's often said that HTTPS SSL/TLS connections are encrypted and said to be secure because the communication between the server and me is encrypted (also provides server authentication) so if someone sniffs my packets, they will need zillions of years to decrypt if using brute force in theory. Let's assume I'm on a public wifi and there is a malicious user on the same wifi who sniffs every packet. Now let's assume I'm trying to access my gmail account using this wifi. My browser does a SSL/TLS handshake with the server and gets the keys to use for encryption and decryption. If that malicious user sniffed all my incoming and outgoing packets. Can he calculate the same keys and read my encrypted traffic too or even send encrypted messages to the server in my name?

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  • Pass parameters to a script securely

    - by codeholic
    What is the best way to pass parameters to a forked script securely? E. g. passing parameters through command line operands is not secure, since someone who has an account on the host can run ps and see them. Unnamed pipe is quite secure, as far as I understand, isn't it? I mean, passing parameters to STDIN of the forked process. What about passing parameters in environment vars? Is it secure? What about passing parameters by other means I didn't mention?

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  • Tool to launch a script driven by modem activity

    - by Will M
    Can anyone suggest a software tool (preferably under Windows XP or later) that would launch an application or script in response to a phone call being received on a landline phone line connected to a data modem on the same PC? or, better, in response to a sequence of touch-tones being played over such a phone line. This would allow, for example, using the telephone to manipulate firewall settings so as to create another layer of security in connection with remote internet access to that computer. I seem to recall seeing tools to do this sort of thing in the days before broadband internet access, when there was more attention to various tips and tricks for the dial-up modem, but a few attempts at Google hasn't turned anything up.

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  • IIS and PHP restrict IO permissions

    - by ULTRA_POROV
    I have php installed trough a fastCGI module. Is there a way to restrict the module (php.exe) read / write permissions to only the directory (+ subdirs) of the IIS site that is calling it? I need this to prevent one IIS PHP site from having access to files outside its own directory. How to do this? Is there a setting in php.ini or in the IIS configuration? I believe such a feature could exist, because when a file on the server is requested the root path of the site is also known, all it would take is that IIS passes this path to the php module, and the php module should on its end allow only IO operations within this path. PS: I know it is possible to achieve this by using a different windows account for each website, this is not an option.

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  • PHP Requests Being Blocked After Making About 25 in Ten Minutes

    - by Daniel Stern
    We have an administrative portal where we run PHP functions through a Javascript portal using ajax for administrative purposes. For example, we might have a function called updateAllDatabaseEntries() which would call AJAX functions in rapid succession, with those functions each executing numerous SQL queries. The problem is after making several successive requests from the same computer (not an excessive amount, maybe 30 in ten minutes) the system will stop responding to any PHP, HTTP requests ETC ONLY from my computer. From other computers in the office the panel can still be accessed, and access is restored to this computer after about 15 minutes. We believe this is not a glitch but some kind of security feature built into our server, possibly relating to Suhosin and likely well-intentioned but currently preventing us from running our system administration. Server Info: Linux 2.6.32-5-xen-amd64 #1 SMP Tue Mar 8 00:01:30 UTC 2011 x86_64 GNU/Linux Cheers - DS

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  • I need a script to lockdown the system time to users via gpedit.msc

    - by Chester
    I need to lockdown the system time on a number of PCs via gpedit.msc and then removing administrators from the group and then adding 'administrator' and 'polling'. Can I do this via a script? Essentially I have to; Run gpedit.msc Computer Configuration Windows Settings Security Settings Local Policies User Rights Assignment Double Click Change the system time Select Administrators Click Remove Click Add User or Group Type Administrator Click Check Names Type polling Click Check Names OK Apply OK Logoff I have to do this for a huge number of computers so is there a batch file I could run on each PC to do this? Your help would be very much appreciated. Best Regards

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  • Is it necessary to connect via Cisco VPN using my university account to go online?

    - by stankowait
    Original title: Bug with Xisco VPN - it it necessary to connect via Cisco VPN using my university-account in order to go online for all wireless networks In order to gain wireless access to my university network, I had to download and install the Cisco VPN client. It worked fine under 11.10 and did so for two weeks on 12.04. But since yesterday, I am unable to connect to my wireless network at home. First I have to connect via Cisco VPN using my university account. This is quite annoying and I'm unable to download apps via the software center when using the Cisco VPN client. I really don't know what happened, because it worked fine for two weeks and I did not change a thing.

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  • How to open a server port outside of an OpenVPN tunnel with a pf firewall on OSX (BSD)

    - by Timbo
    I have a Mac mini that I use as a media server running XBMC and serves media from my NAS to my stereo and TV (which has been color calibrated with a Spyder3Express, happy). The Mac runs OSX 10.8.2 and the internet connection is tunneled for general privacy over OpenVPN through Tunnelblick. I believe my anonymous VPN provider pushes "redirect_gateway" to OpenVPN/Tunnelblick because when on it effectively tunnels all non-LAN traffic in- and outbound. As an unwanted side effect that also opens the boxes server ports unprotected to the outside world and bypasses my firewall-router (Netgear SRX5308). I have run nmap from outside the LAN on the VPN IP and the server ports on the mini are clearly visible and connectable. The mini has the following ports open: ssh/22, ARD/5900 and 8080+9090 for the XBMC iOS client Constellation. I also have Synology NAS which apart from LAN file serving over AFP and WebDAV only serves up an OpenVPN/1194 and a PPTP/1732 server. When outside of the LAN I connect to this from my laptop over OpenVPN and over PPTP from my iPhone. I only want to connect through AFP/548 from the mini to the NAS. The border firewall (SRX5308) just works excellently, stable and with a very high throughput when streaming from various VOD services. My connection is a 100/10 with a close to theoretical max throughput. The ruleset is as follows Inbound: PPTP/1723 Allow always to 10.0.0.40 (NAS/VPN server) from a restricted IP range >corresponding to possible cell provider range OpenVPN/1194 Allow always to 10.0.0.40 (NAS/VPN server) from any Outbound: Default outbound policy: Allow Always OpenVPN/1194 TCP Allow always from 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) OpenVPN/1194 UDP Allow always to 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) Block always from NAS to any On the Mini I have disabled the OSX Application Level Firewall because it throws popups which don't remember my choices from one time to another and that's annoying on a media server. Instead I run Little Snitch which controls outgoing connections nicely on an application level. I have configured the excellent OSX builtin firewall pf (from BSD) as follows pf.conf (Apple App firewall tie-ins removed) (# replaced with % to avoid formatting errors) ### macro name for external interface. eth_if = "en0" vpn_if = "tap0" ### wifi_if = "en1" ### %usb_if = "en3" ext_if = $eth_if LAN="{10.0.0.0/24}" ### General housekeeping rules ### ### Drop all blocked packets silently set block-policy drop ### all incoming traffic on external interface is normalized and fragmented ### packets are reassembled. scrub in on $ext_if all fragment reassemble scrub in on $vpn_if all fragment reassemble scrub out all ### exercise antispoofing on the external interface, but add the local ### loopback interface as an exception, to prevent services utilizing the ### local loop from being blocked accidentally. ### set skip on lo0 antispoof for $ext_if inet antispoof for $vpn_if inet ### spoofing protection for all interfaces block in quick from urpf-failed ############################# block all ### Access to the mini server over ssh/22 and remote desktop/5900 from LAN/en0 only pass in on $eth_if proto tcp from $LAN to any port {22, 5900, 8080, 9090} ### Allow all udp and icmp also, necessary for Constellation. Could be tightened. pass on $eth_if proto {udp, icmp} from $LAN to any ### Allow AFP to 10.0.0.40 (NAS) pass out on $eth_if proto tcp from any to 10.0.0.40 port 548 ### Allow OpenVPN tunnel setup over unprotected link (en0) only to VPN provider IPs ### and port ranges pass on $eth_if proto tcp from any to a.b.8.0/24 port 1194:1201 ### OpenVPN Tunnel rules. All traffic allowed out, only in to ports 4100-4110 ### Outgoing pings ok pass in on $vpn_if proto {tcp, udp} from any to any port 4100:4110 pass out on $vpn_if proto {tcp, udp, icmp} from any to any So what are my goals and what does the above setup achieve? (until you tell me otherwise :) 1) Full LAN access to the above ports on the mini/media server (including through my own VPN server) 2) All internet traffic from the mini/media server is anonymized and tunneled over VPN 3) If OpenVPN/Tunnelblick on the mini drops the connection, nothing is leaked both because of pf and the router outgoing ruleset. It can't even do a DNS lookup through the router. So what do I have to hide with all this? Nothing much really, I just got carried away trying to stop port scans through the VPN tunnel :) In any case this setup works perfectly and it is very stable. The Problem at last! I want to run a minecraft server and I installed that on a separate user account on the mini server (user=mc) to keep things partitioned. I don't want this server accessible through the anonymized VPN tunnel because there are lots more port scans and hacking attempts through that than over my regular IP and I don't trust java in general. So I added the following pf rule on the mini: ### Allow Minecraft public through user mc pass in on $eth_if proto {tcp,udp} from any to any port 24983 user mc pass out on $eth_if proto {tcp, udp} from any to any user mc And these additions on the border firewall: Inbound: Allow always TCP/UDP from any to 10.0.0.40 (NAS) Outbound: Allow always TCP port 80 from 10.0.0.40 to any (needed for online account checkups) This works fine but only when the OpenVPN/Tunnelblick tunnel is down. When up no connection is possbile to the minecraft server from outside of LAN. inside LAN is always OK. Everything else functions as intended. I believe the redirect_gateway push is close to the root of the problem, but I want to keep that specific VPN provider because of the fantastic throughput, price and service. The Solution? How can I open up the minecraft server port outside of the tunnel so it's only available over en0 not the VPN tunnel? Should I a static route? But I don't know which IPs will be connecting...stumbles How secure would to estimate this setup to be and do you have other improvements to share? I've searched extensively in the last few days to no avail...If you've read this far I bet you know the answer :)

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  • Is it possible to allow the User Account to access the 'Volumes' without asking the Administrator's password?

    - by Tom
    Am the administrator of my Ubuntu system. Recently I added a new user account. But when ever the user tries to access or open the 'Volumes'(Drives where movies, songs and other files are stored) it asks for the Administrator's password. I created the user account to my other family members and I don't want to tell them my password. So is it possible to allow them to access the Volumes without asking Administrator's password ? UPDATE : Ubuntu was installed alongside Windows in my system. I will provide a screenshot of the Volume details -

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