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• Client-side certificates

  - by walshms

  My company purchased a wildcard certificate from a vendor. This certificate was successfully configured with Apache 2.2 to secure a subdomain. Everything on the SSL side works. Now I'm required to generate x509 client-side certificates to issue for this subdomain. I'm following along this page: (http://www.vanemery.com/Linux/Apache/apache-SSL.html), starting with "Creating Client Certificates for Authentication". I've generated the p12 files and successfully imported them into Firefox. When I browse to the site now, I get an error in FireFox that says "The connection to the server was reset while the page was loading." I think my problem is coming from not signing the client-side correctly. When I sign the client-side certificate, I'm using the PEM file (RapidSSL_CA_bundle.pem) from RapidSSL (who we bought the certificate from) for the -CA argument. For the -CAkey argument, I'm using the private key of the server. Is this correct?

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• Difference between key_buffers and recommendation

  - by Typeoneerror

  I'm looking to add a bit of memory to MySQL on a Linode VPS server on which I've got a small facebook (canvas app) PHP app using MySQL running. I'm not super familiar with MySQL optimization so I'm hoping to find a simple answer. I think I want to increase the key_buffer size (the default is 16M) to something like 32M to start, but I'm not sure if I need to tweak anything else as well. All I've done so far is increase the query_cache_size to 32M from 16M. There's also key_buffer under [mysqld] and key_buffer under [isamchk]. What are the difference between those two? If I have Linode 2048MB (http://www.linode.com) VPS, what would recommend I set the buffers to? I don't expect this site to have tons of visitors, but I'd like it to be as optimized as possible. Definitely way more heavy on the database access than PHP and very few HTTP requests.

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• Apache Request IP Based Security

  - by connec

  I run an Apache server on my home system that I've made available over the internet as I'm not always at my home system. Naturally I don't want all my home server files public, so until now I've simply had: Order allow, deny Deny from all Allow from 127.0.0.1 in my core configuration and just Allow from all in the htaccess of any directories I wanted publicly viewable. However I've decided a better system would be to centralise all the access control and just require authentication (HTTP basic) for requests not to 127.0.0.1/localhost. Is this achievable with Apache/modules? If so how would I go about it? Cheers.

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• WLC 4400. Get IP

  - by Edward Connelly

  I have three SSID. one is a guest network and I'm having problems with lease times. Its set for web authentication so it passes IPs out even if someone doesn't try and authenticate. Is there a way to get that IP back and not hand another to that mac for a period of time? Poor planning and we didn't allocate enough address space, and we are sandwitched. We could go with another address, but we would have to reconfig lots. since its guest its vlan'd with no access to anthing but the firewalls. would have to change ACLs and routes and interfaces. if it isn't possible we will just have to go that route, just thought there might be an easier solution. session timeout is enabled with 1 hr lease time is set to 4 hrs. no helper DHCP and internal DHCP is set with the space split across three WLCs (60 waps split across those as well).

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• Apache mod_setenvif Server_Addr

  - by user18330

  I have an Apache server in a DMZ, reachaable on the LAN from 192.168.1.1, public 123.456.789.123. I'm trying to get it to require authentication if the inbound hits are coming from the public side. This doesn't seem to work: SetEnvIf SERVER_ADDR 123.456.789.123 local_nic=1 <Location /junk> Order Deny,Allow AuthName "Access required" AuthType Basic AuthUserFile /etc/httpd/conf/htpasswd Require valid-user </Location> What am I doing wrong? Sorry, HTML tags were wiping out my Apache directives.

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• Multiple connections to the same Wireless Network in Windows 7

  - by Jamek

  Hello, my university just limited bandwidth to 512 kbps (that's 64 kB/s!) for each connection. I was thinking to make multiple connection to the same wireless network (called "internet"), is this possible under Windows 7? I know it's possible to connect to more than one WLAN through the "hostednetwork" concept in netsh: netsh wlan set hostednetwork mode=allow ssid=xxxxx netsh wlan start hostednetwork However this method doesn't seem to work, I don't know if it's due to the authentication method (through certificates while hostednetwork seems to support just a "passphrase") or because I'm already connected to that network with the same MAC. Can you think to some tool able to do this?

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• iPad revocable vpn access

  - by carpat

  I'm a programmer at my organization, but somehow got drafted into looking into some server stuff so forgive me of my ignorance: They want to give our sales people secure access to our internal sites using their iPads. This must be secure (obviously) but also revocable from the company's side (if someone quits they can no longer access our network). I see from http://support.apple.com/kb/HT1288 that the iPad supports "RSA SecurID", "CRYPTOCard", and "Kerberos" authentication methods. Will one of these do what we need? Are there any major differences between them?

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• What kind of proxy acl rules should be applied?

  - by user42891

  I try to block sites in squid based on this article. Assuming you would want to block access to Yahoo (e.g http://www.yahoo.co.jp, http://www.yahoo.com, http://www.yahoo.co.in), you would ideally want to block all of the above URLs, if I use a regular expression and try to search something called yahoo it seems to get blocked. We are just interested in applying rules which would be most commonly used across all companies (e.g. social networking sites like facebook, orkut), porn sites (e.g. sex), gaming sites (games), movie & song download sites, and sites where they can upload data (e.g. rapidshare) What would be the common set of effective rules in achieving the above?

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• Samba domain trust errors on a specific interface

  - by John K

  We have a windows domain that also has RHEL member servers in it. All the servers have a primary network connection to the LAN, but some servers also have private dedicated links to one of our RHEL servers, which serves as a head to our SAN storage. This particular server is running Samba 3.5.15, and is running in domain authentication mode. Users can access shares on this server without a problem over the LAN connection from our Windows servers, but if a user tries to access the shares over a private link (i.e. a 192.168.1.2 address to the RHEL server) users get an error "The trust relationship between this workstation and the primary domain failed."

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• Mac OS X desktop background gets reset to "Andromeda Galaxy.jpg" when users log out

  - by smokris

  I'm running Mac OS 10.6 server, and have a set of 10.6 and 10.7 workstations connected to it for authentication and MCX. Users have network profiles (home folder stored on server, via AFP). When users are logged in, they can change their desktop background. So far so good. However, the next time they log in, their desktop background has been reset to "Andromeda Galaxy.jpg". Though MCX is enabled and used to control other settings, MCX is disabled for the Desktop. What is keeping the users' desktop background from being preserved? How can I fix it?

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• Truecrypt system partion partially encryted but then drive corrupted and won't boot - decrypting so I can access files to backup?

  - by Dr.Seuss

  So I was attempting to encrypt my (Windows 7) system drive with Truecrypt and it stopped at around 15% and said that there was a segment error and that it could not proceed until it was fixed. So, I restarted the computer and ran HDD Regenerator which subsequently fixed the bad sectors on the drive, but now my system cannot boot. So, I run a number of recovery disks to no avail (Windows repair is unable to fix) and the drive won't mount on a linux version run from a CD because the drive is encrypted. So I tried mounting the drive using Truecrypt under the Linux distribution on the disk and selected "Mount partition using system encryption without pre-boot authentication" so I can decrypt, but I get an error message about it only being possible once the entire system is encrypted. How do I get out of this mess? I need to be able to back up the data that's on that partially encrypted drive so I can reinstall my operating system.

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• "Countersigning" a CA with openssl

  - by Tom O'Connor

  I'm pretty used to creating the PKI used for x509 authentication for whatever reason, SSL Client Verification being the main reason for doing it. I've just started to dabble with OpenVPN (Which I suppose is doing the same things as Apache would do with the Certificate Authority (CA) certificate) We've got a whole bunch of subdomains, and applicances which currently all present their own self-signed certificates. We're tired of having to accept exceptions in Chrome, and we think it must look pretty rough for our clients having our address bar come up red. For that, I'm comfortable to buy a SSL Wildcard CN=*.mycompany.com. That's no problem. What I don't seem to be able to find out is: Can we have our Internal CA root signed as a child of our wildcard certificate, so that installing that cert into guest devices/browsers/whatever doesn't present anything about an untrusted root? Also, on a bit of a side point, why does the addition of a wildcard double the cost of certificate purchase?

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• Strange RDP / Remote Desktop problem

  - by John Landheer

  I'll try to be as specific as I can be: Server is running SBS 2008 R2 (with all updates) Server is connected to the internet Server has 2 NIC's, one is disabled Server is running RDP Service (accessible directly from the internet, I know, not as secure as it should be) Computers A and B are on the same local net. Computers A and B are both Windows 7. Users X and Y are both admins on the server Computer A can connect as user X to the server with mstsc Computer A can connect as user Y to the server with mstsc Computer B can connect as user X to the server with mstsc computer B CANNOT connect as user Y to the server with mstsc! The last point is the problem, I get an authentication error. This used to work flawlessly for the last year. The server and desktops have been rebooted. I find it very strange....

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• Active Directory password update not recognized on OS X 10.7.3?

  - by eaj

  We have a few Macs in our office which are bound to our Active Directory (Server 2k8R2) domain for login authentication and access to file shares. For the most part this has worked without trouble. I recently changed my AD password (from the Windows box that is my main desktop machine), and my iMac still wants my old password for logins—even after a reboot. It correctly prompts for the new password when I attempt to connect to Windows smb file shares. The last time I changed my password, the iMac was running Snow Leopard and picked up the password change as expected. I'm a little bit of an OS X n00b, so I apologize if this should be obvious. My searching has turned up numerous issues people have had with Lion and Active Directory, but not this particular problem. Possibly related, we do have mobile accounts enabled for AD in the Directory Utility options. I assume this causes credentials to be cached locally, but it's not clear to me how to get them to update.

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• Establish connection with an IP camera behind a modem-router assigned with a private IP by Internet Service Provider?

  - by silvernightstar

  Most solutions out there require the modem-router to have been assigned a public IP by the ISP. After which, one can access the IP camera via a portforward setting on the router. However, my ISP only provides private IPs internal to their system (they probably have a limited pool of public IPs). So I am unable to view my IP cameras in the way described. I'm wondering if there's a way to work around this problem without having to need a public IP. Since, after all, two users on Yahoo Messenger or Facebook Chat are able to find one another and exchange data despite both sides being within the internal networks of their respective ISPs. Given that I only plan to view my IP cameras via iOS or Android running on a smartphone or tablet, any ready-to-use solutions out there?

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• Stop ssh client from offering all the public keys it can find?

  - by Rory McCann

  Like most sysadmins I use openssh all the time. I have about a dozen ssh keys, I like to have a different ssh key for each host. However this causes a problem when I am connecting to a host for the first time, and all I have is a password. I want to just connect to the host using a password, no ssh key in this case. However the ssh client will offer all the public keys in my ~/.ssh/ (I know this from looking at the output of ssh -v). Since I have so many, I will get disconnected for too many authentication failures. Is there some way to tell my ssh client to not offer all the ssh keys?

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• How secure is using "Normal password" for SMTP with connection type = STARTTLS?

  - by harshath.jr

  I'm using an email client for the first time - for the most part I've always used gmail via the web interface. Now I'm setting up thunderbird to connect to an email server of my own (on my own server, own domain name, etc). The server machine (and the email server on it) was preconfigured for me. Now i figured out away by which I'm able to send and receive email, but I noticed that in the outgoing and incoming servers section, the connection type was STARTTLS (and not SSL/TLS), and the Authentication Type was "Normal Password". Does this mean that the password will be sent across in plain text? I'm very paranoid about security - its the only way that it works for me. Can someone please post links that explain how SMTP (my outbound server) and IMAP (my inbound server) servers work, and what connection type means what? Thanks! PS: If this question does not belong here, please redirect me.

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• Why does this login fail for user 'Servername\Guest'?

  - by Metassebia

  I install SQL Server 2005 EXPRESS edition on one computer, Computer Name = 'MyServe' and Database name='MyDB',take it as database server. it is configured as both Database and Windows Authentication Mode. with username=sa and password=adminaa. I have application in C#.Net my connection string is ConnectionString = "Data Source=MyServe\SQLEXPRESS;Initial Catalog=MyDB;Integrated Security=True;User ID=sa;Password=adminaa"; when I run the application on the computer called MyServe, the database server, it works well, while when I install the application on different computer, when it tries to connect the database it gives an error called "login failed for user 'MyServe\Guest" what is wrong with configuration in the database server or other mistakes. please help me. thankyou in advance. Metasebia

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• How can I can delete a project in Aperture, but not in Flickr?

  - by jchatard

  I have a Macbook Air as my only computer ; I store my shots on Flickr. The size of the SSD doesn't allow me to keep all my RAW files on my laptop. So I publish the photographs I like in their final state on Flickr with the built-in feature of Aperture. When I hit delete on a project (in Aperture) the message clearly indicates that all photos synched to any service like Facebook, Flickr or any other will be deleted. How can I can around this without the hacky way of unlinking Aperture from Flickr before deleting the project?

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• Different configurations for ssh client depending on ip address or hostname

  - by John Smith Optional

  I have this in my ~/.ssh/config directory: Host 12.34.56.78 IdentityFile ~/.ssh/my_identity_file When I ssh to 12.34.56.78, everything works fine. I'm asked for the passphrase for "my_identity_file" and I can connect to the server. However, sometimes I'd also like to ssh to another server. But whatever the server, if I do: ssh [email protected] I'm also asked for the passphrase for "my_identity_file" (even though the server has a different ip address). This is very annoying because I don't have the public key for this file set up on all my servers. I'd like to connect to this other server (an old shared hosting account) with a password, and now I cant. How do I manage to use the key authentication only with one server, and keep using password by default for servers that aren't listed in my ~/.ssh/config ? Thanks for your help.

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• Binding services to localhost and using SSH tunnels - can requests be forged?

  - by Martin

  Given a typical webserver, with Apache2, common PHP scripts and a DNS server, would it be sufficient from a security perspective to bind administration interfaces like phpmyadmin to localhost and access it via SSH tunnels? Or could somebody, who knew eg. that phpmyadmin (or any other commonly availible script) is listening at a certain port on localhost easily forge requests that would be executed if no other authentication was present? In other words: could somebody from somewhere in the internet easily forge a request, so that the webserver would accept it, thinking it originated from 127.0.0.1 if the server is listening on 127.0.0.1 only? If there were a risk, could it be somehow dealt with on a lower level than the application, eg. by using iptables? The idea being, that if someone found a weakness in a php script or apache, the network would still block this request because it did not arrive via a SSH-tunnel?

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• Site Action Button Missing

  - by David

  I have a Moss 2007 site collection which was running smoothly. However, after moving to Forms Authentication connected to Active Directory neither my Farm Administrator account nor the 2 Site collection administrators can get past the site homepage. There is no Site Action buttons availabe. When I log into CA witht he Farm Administrator account the Site Action button exists there so I suspect its something to do with the permissions to the site application. I have tried to connect directly to the settings URL http://mysite/_layouts/settings.aspx etc but get the ususal error Error: Access Denied Current User You are currently signed in as: xxxx (Farm Administrator Account) Sign in as a different user Request access I get the same error when logging in with the site collection admin accounts. Ive also checked to make sure that the sites are not locked out.

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• Case in-sensitivity for Apache httpd Location directive

  - by user57178

  I am working with a solution that requires the usage of mod_proxy_balancer and an application server that both ignores case and mixes different case combinations in URLs found in generated content. The configuration works, however I have now a new requirement that causes problems. I should be able to create a location directive (as per http://httpd.apache.org/docs/current/mod/core.html#location ) and have the URL-path interpret in case insensitive mode. This requirement comes from the need to add authentication directives to the location. As you might guess, users (or the application in question) changing one letter to capital circumvents the protection instantly. The httpd runs on Unix platform so every configuration directive is apparently case sensitive by default. Should the regular expressions in the Location directive work in this case? Could someone please show me an example of such configuration that should work? In case a regular expression can not be forced to work case insensitively, what part of httpd's source code should I go around modifying?

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• Samba 4 or Active Directory

  - by Jon Rhoades

  Now that Samba 4 has finally been released we find ourselves in new position of having a choice of of either upgrading our Samba 3 domain to either a Samba 4 domain on Linux or a Windows AD domain on Windows 2012. Given that we are equally expert at managing Windows and Linux servers, is there any reason not to use Samba 4 over AD on Windows; specifically: Are there functional differences from a Windows/OS X client perspective? Are there issues with other services that use AD, such as storage appliances that use AD/Kerberos for authentication/authorisation. Will the Microsoft "System Centre" suite of tools and other similar products work seamlessly? How will Samba 4 handle AD's Multimaster DC model and FMSO roles. Are there any other issues to be aware of, such as vendor support?

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• Windows 7, connecting to Samba shares

  - by Colin Pickard

  How can I connect to a Samba share with authentication using Windows 7? We have a bunch of Linux, HP-UX and AIX servers on our network with folders shared using Samba. These are not connected to our Active Directory or anything, we just type a user name and password when we connect to them. They still all work fine from Windows XP, but we've upgraded a couple of machines to Windows 7 and they can't access the shares. You get prompted for a password but it says "The specified network password is incorrect" (it's not).

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