I was wonder with nginx can I:
Check if content-type == "image/x-jpeg" || content-type == "image/png" || content-type == "image/gif"
If true && referrer != "mysite.com" && referrer != "": Return a 404 result or an image of my choice.
Update: This is a duplicate. But I could not find it (the duplicate) until I posted. So I am leaving this here for others.
I install custom software in /usr/local/lib. How do I set the PATH and LD_LIBRARY_PATH in CentOS 6 system-wide to use /usr/local/lib. I realize there may be more than one way. What's the simplest and most standard way?
On CentOS 6 I cannot install GeoIP even though many websites describe installing GeoIP with the following commands:
yum install GeoIP GeoIP-devel GeoIP-data
I get No package GeoIP available.
See http://technet.microsoft.com/en-us/library/ff715408.aspx for FirstLogonCommand, how do I specify a CommandLine for the OS boot drive and not just use "C:" like the examples do. The OS boot drive might not be "C:".
Update: I am using C++ to write the XML and the program that will run is also written in C++.
I need to be able to silently download and install Windows Genuine Advantage. Where can I download it and What is the command line for silent installation?
I am surprised it's so hard to find this information. I need to install Microsoft Software that requires genuine Advantage to be installed.
In autounattend.xml I can set <ProtectYourPC>3</ProtectYourPC> to disable automatic updates. However, after installing, Windows still complains loudly that updates are disabled.
By manually checking disable updates the message does go away. But how do I do this without requiring user interaction?
In an unattended installation how do I tell Windows I want the Internet Explorer icon on the Desktop? Can I do this from unattended.xml? Or do I need a registry key or command?
What CentOS 6 package name do I need to install boost header files:
yum install boost doesn't seem to work. Is there a special compiler directive I need to use to point to the include files? Or is there another package to install?
As you may already know, Windows Vista SP2 and up (includes Windows 7) block raw disk write access. Is there a way, short of patching the kernel, to override that block? So in cygwin I can do e.g. cat ./myfile>/dev/sdc3
Is there a Windows freeware program that you recommend which writes raw images to disk?
Now that the BEAST is public knowledge, TLS 1.0 is NOT safe to use (nor is SSL 3.0). I have seen reports that the RC4 cipher is unaffected (and is widely supported). Is that true?
I know that TLS 1.1 is immune. But out of the 1,000,000 most popular SSL/TLS enabled websites, only a few (221) support TLS 1.1 or higher.
The exploit is restricted to browsers because it requires JavaScript or Browser Plugins via MITM. PayPal.com is vulnerable, as of this writing.
I want to know if a particular computer has MS HotFix #981889 installed. To do that I check file versions. This page lists file versions that the hotfix deals with. However, I cannot figure out:
I am using CentOS 6, trying desperately to get Wifi working via a ifcfg-wlan0 file and fudging with /etc/wpa_supplicant/wpa_supplicant.conf. I do not have an X server, so I do not want to use the GUI tools.
How can I configure NetworkManager to have WPA2-PSK WiFi on wlan0 with an ESSID of inet_bridge. Ethernet works fine, so I know that my setup isn't completely messed up. Must be done at the command line or with vim.
My wpa_supplicant.conf:
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
network={
ssid="inet_bridge"
key_mgmt=WPA-PSK
proto=WPA RSN
pairwise=CCMP
group=CCMP
psk="thisIsMyAsciiPassword"
}
My ifcfg-wlan0:
DEVICE=wlan0
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.0.253
NETMASK=255.255.255.0
DNS1=192.168.0.99
HWADDR=xx:xx:xx:xx:xx:xx
TYPE=Wireless
I have a bridge, over WiFi, that is using parprouted to fudge ARP so that routing works. Is there anything like dhcrelay (which relays DHCP requests) but for NetBIOS (Windows File and Print Sharing) names?
The WiFi gateway in question is a cheap Belkin so any other options seem unlikely to work.
UPDATE: I will use nmbd from samba as a WINS server. DHCP should allow me to configure WINS automatically on the client.
What I am looking for is a bridge. WiFi cannot handle normal bridging, so how can I route two IP Ethernet networks using WiFi? (Under Linux)
How do I set up IP routing under Linux? It must forward DHCP, that is, the router must forward broadcast packets.
NAT is not a solution.
UPDATE: The reason I am going WiFi is that our internet cable is badly grounded. Lightning recently traveled through our cables, destroying much of our equipment, including computers and routers. This is the most sure way to ensure it doesn't happen again.
SOLUTION: I have come up with 2 solutions thanks to the answers.
dhcrelay, parprouted, and set ip_forward=1. That allows true IP based routing to work and DHCP works because of dhcrelay. The shortcoming is that NetBIOS names (which relies on broadcast packets) are not relayed. So computers must be accessed by their UNC path IP address in Windows \\192.168.1.3\SharedDocuments instead of \\LaptopMain\SharedDocuments.
On CentOS I no longer have a ifcfg-eth0 configuration file (I deleted it). When I run system-configure-network it shows no interfaces that I can edit. How can I recreate the ifcfg-eth0 configuration file? (Like the CentOS installer does)
I can manually do a: ifconfig eth0 192.168.0.199 and then a ping 192.168.0.1. But that's not the proper way. How can I do it using the CentOS network scripts?
I prefer not to do this by hand as there are many hardlinks and confusing stuff. I am new to CentOS.
When doing technical support. People don't always have their reinstall CD, that seems reasonable... So I get an ISO of their version and edition from off of MSDN.
This is not piracy, just a common technical support issue. I don't want to resort to using those pirate tools available online. I want to know how this is done cleanly.
Saying, Microsoft doesn't allow this makes me look like an idot in front of the customer. They have a legitimate complaint, how are they supposed to know they must keep the reinstall disk?
UPDATE: When the hardware changes, the OS will still deactivate like normal. They should be allowed to reinstall a copy of their OS. Not being allowed to has to be a violation of some civil code or other law...
The offline system can be Windows 7, Vista OR XP.
Is it possible to mount the NTFS and registry hives from a 64-bit Windows on a 32-bit Windows Preinstallation Environment (32-bit). Does 64-bit change the file format?
Also can x86_64 machines boot unmodified 32-bit OSes?
On Linux I can make a transparent proxy simply by adding a iptables -j REDIRECT command.
To my surprise, I am needing to support IPv6. Simple enough right? iptables6 -j REDIRECT command not supported!?
Apparently, Linux threw out NAT (and transparent proxy support with it) on IPv6. I don't care much about NAT on IPv6. So how do people get a squid transparent proxy working on IPv6? With Linux as the host.
I am new to Centos and yum in general.
yumdownloader --source? When I run the command it says the SRPMs are not found. How do I add the repository? I am talking about official CentOS packages here.