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  • Windows XP app not able to talk to web server

    - by weotch
    My company makes an app built with Adobe Air which talks to our webserver for user authentication. Some users are not able to login. Running Charles Proxy tells us that the "host cannot be found." Loading up the webserver in IE, initially we weren't able to visit the site, we had to add it to trusted sites. My guess is that some security setting is denying our app as well. Does anyone have any suggestions as far as where to make security looser for our app?

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  • Using LDAP Attributes to improve performance for large directories

    - by Vineet Bhatia
    We have a LDAP directory with more than 50,000 users in it. LDAP Vendor suggests maximum limit of 40,000 users per LDAP group. We have number of inactive users and those are being purged but what if we don't get below the 40,000 users? Would switching to using multivalued attribute at user record level instead of using LDAP groups yield better performance during authentication, adding new users, etc? I know most server software (portal, application servers, etc) use LDAP groups. But, we have a standardized web service interface for access control instead of relying on server software to map LDAP groups to security roles. Each application uses this common "access control web service". Security roles are used within application to build fine-grained ACL used within each enterprise application.

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  • selinux permissive and type targeted

    - by krisdigitx
    i am running centos 6.2 recently i noticed that apache was running with selinux enabled # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=Permissive # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted i noticed that these errors were coming on dmesg type=1400 audit(1354453732.704:9056368): avc: denied { name_connect } for pid=39006 comm="httpd" dest=11211 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:memcache_port_t:s0 tclass=tcp_socket type=1400 audit(1354453735.777:9056369): avc: denied { name_connect } for pid=39046 comm="httpd" dest=6379 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket i then enabled /usr/sbin/setsebool httpd_can_network_connect=1 and this stopped the errors and also the webpages started to work. My question is if selinux is in permissive mode will selinuxtype=targeted enforce any polices? if not how did it solve the problem with apache as selinux was already in permissive mode?

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  • HTTP/1.1 503 Service Unavailable Exchange 2003 OWA

    - by toups
    Receiving HTTP/1.1 503 Service Unavailable when trying to access exchange web access. Server 2003 & Exchange 2003 Have tried: Deleting virtual directories and rebuilding them in IIS Restarting Dismounting & mounting the public folder store & mailbox store It's not AppPoolQueueLength Restarting all services (all proper ones are running) Making it use ssl or not (regular http) -- same thing for both Installing IIS & exchange 2003 on a new 2003 box as a new FE server, OWA on that gets same error. Not sure why it's getting a 503... was working without an issue and randomly is stuck at this no matter what; ll users can still successfully connect and use via outlook, only the web access is having issues. Any suggestions would be appreciated.

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  • Apache and fastcgi - How to secure an Apache server with fastcgi enabled?

    - by skyeagle
    I am running a headless server on Ubuntu 10.x. I am running Apache 2.2. I am writing a fastcgi application for deployment on the server. I remember reading a while back (I could be wrong) that running CGI (and by implication fastcgi) on a server, can provide 'backdoors' for potential attackers - or at the very least, could compromise the server if certain security measurements are not taken. My questions are: what are the security 'gotcha's that I have to be aware of if I am enabling mod_fastcgi on my Apache server? I want to run the fastcgi as a specific user (with restricted access) how do I do this?

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  • Bacula Director and Storage in LAN

    - by B14D3
    I have two networks LAN and DMZ.. Machines in DMZ are accesible from internet ( only over http). In LAN I have servers that see all LAN and all DMZ machines but machinse from DMZ don't see any LAN servers. Machines in LAN have access only to all LAN and DMZ, no direct access to internet and no access from internet. DMZ <------ LAN DMZ ----X--->LAN I'm planning to configure Bacula as major backup system. My plan is to install Bacula Director and Storage deamon on the same server in LAN for safety reasons. So my question is: Will this configuration work, is it posible for bacula director and storage deamon installed on server in LAN to makes backup servers that are in my DMZ? Or in this network configuration Bacula should be in DMZ? (If yes will I can backup with it servers in LAN ?)

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  • Is it safe to enable forced ASLR via EMET on Windows?

    - by D.W.
    I'd like to enable forced ASLR for all DLLs on Windows. Is this safe? Background: ASLR is an important security mechanism that helps defend against code injection attacks. DLLs can opt into ASLR, and most do, but some DLLs have not opted into ASLR. If a program loads even a single non-ASLRized DLL, then the program doesn't get the benefit/protection of ASLR. This is a problem, because there are a non-trivial number of DLLs that haven't opted into ASLR. For instance, it was recently revealed that Dropbox injects a DLL into a bunch of processes, and the Dropbox DLL doesn't have ASLR turned on, which negates any ASLR protection they otherwise would have had. Unfortunately, there are many other widely used DLLs that haven't opted into ASLR. This is bad for system security. Microsoft provides several ways to turn on ASLR for all DLLs, even ones that haven't opted into ASLR: On Windows 7 and Windows Server 2008, you can enable "Force ASLR" in the registry. On all Windows versions, you can use Microsoft's EMET tool and enable EMET's "Mandatory ASLR" option. These methods are possible because all DLLs are compiled as position-independent code and they can be relocated to a random location even if they haven't opted into ASLR. These options will ensure that ASLR is turned on, even if the developers of the DLL forgot to opt into ASLR. Thus, forcing on ASLR systemwide may help system security. In principle, turning on forced ASLR could potentially break a poorly-written DLL, so there is some risk of breakage. I'm interested in finding out just significant this risk is. I have the suspicion that this kind of breakage might be extremely rare. Here's what I've been able to find: Microsoft has done compatibility testing with several dozen widely used applications. The only one they found where Mandatory ASLR causes problems is Windows Media Player. All the other applications continue working fine. (See pp.39-41 of this document.) I've seen some anecdotal reports that enabling "Mandatory ASLR"/"Force ASLR" is fine and unlikely to cause problems. CERT reports that AMD and ATI video drivers used to crash if you enabled forced ASLR, but their latest drivers have now fixed this problem. They don't show any other drivers with this problem. A forum post from Microsoft shows no other applications with compatibility problems if ASLR is forced on, as of 2011. A user reports that borderlands.exe, a video game by Gearbox Software, crashes if you turn on mandatory ASLR. What else should I know? Is it relatively safe to turn on Force ASLR / Mandatory ASLR systemwide to harden the secuity of my system, or will I be in for a world of pain and broken applications? How significant is the risk of compatibility problems and broken applications?

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  • Should I Upgrade My Old Wireless Router?

    - by lyngbym
    I have an old wireless router, and I mean stone age old (5 years). There is nothing wrong technically with the router, it serves my wireless needs at home but it is really darn old. A search on Belkin's site for F5D7230-4 actually turns up a different old model so I scrounged up this old review for you to get a sense of what I'm running: http://www.pcmag.com/article2/0,2817,1572451,00.asp. Is there a valid security reason to replace this router in 2009? Google searches have turned up a few security threats to it and Belkin hasn't released new firmeware in years for it. I am starting to think I should replace it mainly because its NAT is about the only thing protecting me from the outside world. Buying a new wireless router is a boring way to spend money since it just sits on a shelf doing its job. Thoughts?

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  • need help upgrading small business wifi network

    - by Henry Jackson
    Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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  • How secure is a bluetooth keyboard against password sniffing?

    - by jhs
    In a situation where an admin will enter sensitive information into a keyboard (the root password), what is the risk that a bluetooth keyboard (ship by default with Mac systems these days) would put those passwords at risk? Another way of asking would be: what security and encryption protocols are used, if any, to establish a bluetooth connection between a keyboard and host system? Edit: Final Summary All answers are excellent. I accepted that which links to the most directly applicable information however I also encourage you to read Nathan Adams's response and discussion about security trade-offs.

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  • need help upgrading small business wifi network

    - by Henry Jackson
    Our small business currently has 3 wireless access points around the building, each with their own SSID. Security is done with WEP (ick) and MAC address filtering (double ick). We are trying to reconfigure the setup, with these goals: wifi roaming between the access points user-based authentication that isn't as annoying as MAC address filtering. 1) The entire building is hardwired with ethernet, so I assume it should be easy to set up the routers to act as one big network, but I can't figure out how. Can someone point me in the right direction? The routers are consumer-grade linksys routers, is it possible to do this without getting new hardware? 2) For security, we will probably upgrade to WPA2, and I'm thinking of using the Enterprise version so that users can log in with a username, instead of having a single key (so if an employee leaves or something, their access can be removed). We have several on-site Windows servers, can one of them be set up as a RADIUS server, or is that best left to a dedicated machine (again, using existing hardware is good).

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  • Using pscp and getting permission denied

    - by Espen
    I'm using pscp to transfer files to a virtual ubuntu server using this command: pscp test.php user@server:/var/www/test.php and I get the error permission denied. If I try to transfer to the folder /home/user/ I have no problems. I guess this has to do with that the user I'm using doesn't have access to the folder /var/www/. When I use SSH I have to use sudo to get access to the /var/www/ path - and I do. Is it possible to specify that pscp should "sudo" transfers to the server so I can get access to the /var/www/ path and actually be able to transfer files to this folder?

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  • cannot add a user to sysadmin role in SQL Server

    - by George2
    Hello everyone, I am using SQL Server 2008 Management Studio. The current logon account belongs to machine local administrator group. I am using Windows Integrated Security mode in SQL Server 2008. My issue is, after log into SQL Server Management Studio, I select my login name under Security/Logins, then select Server Roles Tab, then select the last item -- sysadmin to make myself belong to this group/role, but it says I do not have enough permission. Any ideas what is wrong? I think local administrator should be able to do anything. :-) thanks in advance, George

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  • RDP over VPN only

    - by shiva
    I know this question has been asked many a times here. But i want to gain certain perspective here. I have enabled VPN on certain systems and then can access remote system using rdp. However they can access the remote system without rdp as well. Is this because all these systems are in same lan group? How can i ensure that rdp works only when connected to vpn? I am looking at one vpn system and people should log into that system and then connect to vpn and then access remote system using rdp. I know that this can be achieved but i am not sure how to go about it. please guide me

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  • OpenBSD has open ports in default installation

    - by celil
    I have been considering replacing Ubuntu with OpenBSD to improve the security on my local server. I need to have ssh access to it, and I also need it to serve static web content - so the only ports I need open are 22 and 80. However, when I scan my server for open ports after installing OpenBSD 4.8, and enabling ssh and http at /etc/rc.conf httpd_flags="" sshd_flags="" I discovered that it had several other open ports: Port Scan has started… Port Scanning host: 192.168.56.102 Open TCP Port: 13 daytime Open TCP Port: 22 ssh Open TCP Port: 37 time Open TCP Port: 80 http Open TCP Port: 113 ident ssh (22) and http (80) should be open as I enabled httpd and sshd, but why are the other ports open, and should I worry about them creating additional security vulnerabilities? Should they be open in a default installation?

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  • SQL Server NETWORK SERVICE account permissions

    - by RemotecUk
    My SQL Server Windows service is set to use the NETWORK SERVICE account. The server is installed to C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL. However looking at the permissions on that folder, NETWORK SERVICE does not have any permissions. The groups which are allowed access to that folder are... CREATOR OWNER - who is this? SYSTEM - sounds fine - so that Windows can access the folder I presume? SQLServerMSSQLUser$Computer_Name$MSSQLSERVER - this is the interesting one - what is this? Administrators Users If NETWORK SERVICE is a user with minimal permissions on the system and looks to the O/S as someone connecting from a network how does it have permissions to access any files in the SQL Server install folder? Thanks.

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  • Homegroup and NTFS permissions

    - by bytenik
    I'm running a copy of Windows 7 as a "server" at my home. I have several file shares that I want to make available to specific users only. I've modified the NTFS permissions to only allow these users to access their respective shares. However, while a locally logged on user can access the actual folders just fine, over the network the remote access is authenticating as HomeGroupUser$ rather than the actual user in question, as shown by the Computer Management panel for shares. I do have matching user accounts (i.e. my username locally is abc and a parallel account with username abc and the same password exists on the server machine). I don't want to disable homegroup because there are other shares where homegroup authentication would be desirable, especially for some people where they don't have a parallel account. Is there a way to get the system to authenticate first by matching username, and then by homegroup authentication if there's no matching user?

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  • How to create one additional hidden partition in a USB drive

    - by backslash17
    For security purposes I need to locate a additional hidden partition on USB flash drive. The USB drive contains a security application that will check (in code) if the hidden partition exists. If not I will assume that the application is a non valid copy. Any idea about it? Thanks in advance. EDIT: There is already a programmed secure method to check if the USB drive is correct using the WMI Win32_drive class. The idea is to locate the drive info into the hidden partition and to check if it correct for anti-tampering procedures.

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  • Encrypt shared files on AD Domain.

    - by Walter
    Can I encrypt shared files on windows server and allow only authenticated domain users have access to these files? The scenario as follows: I have a software development company, and I would like to protect my source code from being copied by my programmers. One problem is that some programmers use their own laptops to developing the company's software. In this scenario it's impossible to prevent developers from copying the source code for their laptops. In this case I thought about the following solution, but i don't know if it's possible to implement. The idea is to encrypt the source code and they are accessible (decrypted) only when developers are logged into the AD domain, ie if they are not logged into the AD domain, the source code would be encrypted be useless. Can be implemented this ? What technology should be used?

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  • Unable to set NTFS permissions for ApplicationPoolIdentity on Windows 2008 SP2

    - by Kev
    On Windows 2008 R2 I am able to set NTFS permissions for an application pool's synthesised ApplicationPoolIdentity account thus: ICACLS d:\websites\site1\www /grant "IIS AppPool\site1":(CI)(OI)(M) The website's application pool is named site1 and is configured to run as ApplicationPoolIdentity. The site's authentication is also configured to authenticate as ApplicationPoolIdentity. I've done this a thousand times on Windows 2008 Standard Edition R2 with never a hitch. However if I try to do the same in Windows 2008 Standard Edition SP2 I get the error: IIS AppPool\site1: No mapping between account names and security IDs was done. Successfully processed 0 files; Failed processing 1 files I also notice that this fails if I try to set permissions for the application pool identity via the security GUI as well. I've seen this before and a reboot has cleared this issue but I'd like to know why this happens periodically. Googling around suggests other folks have hit this problem but there's never a satisfactory explanation. Why would this be?

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  • Protect apache pages by URL

    - by Thomas
    Is it possible to allow access to specific URLs only to certain networks? Basically, I would like to restrict access to the admin area only to the local network This area's pages are prefixed by /admin Essentially, I would like all /admin/* to be forbidden from public access. Can apache handle such a case? Thanks UPDATE Using your suggestions I came up to <LocationMatch admin> Order allow,deny deny from all Allow From 192.168.11.0/255.255.255.0 </LocationMatch> However, I get 403 even though I am on the network. Additionally, if I put apache behind haproxy, is this going to work? Because the traffic will be coming from 127.0.0.1 to apache

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  • transfer code from one server to other server.

    - by Kamlesh Bhure
    I wanted to transfer new code into my new production server. I have code files on my development server. Instead of uploading files using FTP from my local machine, there is other way to transfer code from one server to other. What I am thinking I will make zip file of whole code to be transfer and place it in webroot. So that it would be accessible in internet with some link http://www.mydomain.com/code.tar.gz now on the other server i will just run command wget http://www.mydomain.com/code.tar.gz Will this transfer done in few seconds...? May I know is this correct approach?

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  • Running a webserver behind a firewall, is it secure?

    - by i.am.intern
    Currently we have a Linux-based firewall which NAT-ing our public IP address to give internet access to our staff's PCs and a Windows Server 2003 for internal filesharing. I want to host Redmine/SVN (a bugtracker) internally behind this firewall using a Linux server. This webserver will be accessed by our clients externally so they can post bug reports. This means that I have to open port 80 & 22 at the firewall to give access to the webserver and me to SSH it from home. However, let's say I'm using password-based SSH for the webserver and somebody cracked it. Does that mean the cracker could ping and access other servers and PCs in the network?

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