![]() ![]() I simply checked out the git mirror of their official repository (didn't have hg installed): git clone Īs for other libraries, those are the ones:Īnd the lua stuff you need (as far as I can remember): That's why I decided to go for the current development version. The problem is that, at the time of writing, the sasl support hasn't made it into a stable build yet. There are installers/packages available for Debian/Ubuntu, Windows, Arch Linux, FreeBSD and Windows. You've set up a proper saslauthd and configured a service called xmpp. Please enter an authorization id: YOURUSERID This means that the service called "xmpp" (from the filename) only accepts plain passwords and uses the saslauth daemon to check them.Ĭheck if this works by starting the sample server: # sasl2-sample-server -s "xmpp" -m "PLAIN"Īnd connect to it using the sample client (probably in another terminal session): # sasl2-sample-client -s "xmpp" -m "PLAIN" localhost For this, you'll have to set up your /usr/lib64/sasl2/nf (or /etc/sasl2/nf ) # cat /usr/lib64/sasl2/nf ![]() This is basically just a config file that tells the cyrus-sasl library which service to auth against. To be able to auth against this, you'll need to set up a matching service. ![]() This just set up the connection info for the saslauth daemon. Ldap_search_base: ou=userlist,dc=example,dc=orgĪfter this (and maybe a /etc/init.d/saslauthd restart), the testsaslauthd command should work: # testsaslauthd -u existing_user -p thepassword They are very useful to see if your configuration is actually ok. This will also install programs such as "testsaslauthd", "sasl2-sample-client", "sasl2-sample-server", "sasl2-shared-mechlist" and "sasl2-static-mechlist". While I don't remember everything I installed, here are some packages that seem appropriate: Getting sasl to run and auth against LDAP Prosidy uses lua-cyrussasl (which basically can't be found using google) to communicate with the library. The SASL protocol framework is used by SMTP, IMAP, ACAP, LDAP, and other standard protocols. It supports authentication via standard plaintext methods as well as CRAM-MD5 and DIGEST-MD5 shared secret methods and KERBEROS_V4 and GSSAPI Kerberos methods. Here is a quote from its freshmeat page: The Cyrus SASL library is a generic library for easy integration of secure network authentication to any client or server application. To quote from the ?official website?: SASL is the Simple Authentication and Security Layer, a method for adding authentication support to connection-based protocols.Ĭyrus SASL is a matching library. This is why this commit cought my eye: first working version with Cyrus SASL support. It wouldn't have been all that hard to implement it for somebody that actually knew lua, but I decided that I have other things to do at the moment. My problem with prosody in the past was the missing LDAP authentication feature. While lua wasn't all thaaat slow to begin with (for a scripting language), since luajit came up, it is only arround 2 times slower than C, according to the benchmarks. ![]() Where as Tigase and ejabberd are basically a huge, ugly wall of text, prosody is a clean and simple lightweight design. By simple looking at the website, you see the difference. There also is no support for authenticating against LDAP with Tigase at the time of writing. Since I had bad experience setting up the whole java-enironment, I'd rather not try it again. There also is Tigase, an open-source java based xmpp-server. There is ejabberd, but since I can barely read erlang, let alone write, I decided that I don't really want to deal with ejabberd :) Since I had no intention of setting up openfire again, I decided to look for other tools. It worked pretty fine in the beginning, but a lack of updates and a horrible java-overengineering led to the point where the server needed 400 MB of RAM and didn't even consider talking to LDAP anymore. When i configure ldap in ejabberd.yml and restart it's ok no error.UPDATE: There is another guide that shows this setup on more current prosody version over here.Ī few years ago, I set up a Jabber server at my university. Ldap_filter: "(&(objectClass=mailUser)(accountStatus=active))" # Encryption of connection to LDAP servers: (iredmail and ldap they are same server). I looking for configure ejabberd with ldap. Related log if you're reporting an issue: Manage mail accounts with iRedAdmin-Pro? No Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP Linux/BSD distribution name and version: Debian Jessie 64 bits iRedMail version (check /etc/iredmail-release): lasted version ![]()
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These are actually categorized as elemental and compound semiconductors. Si is an elemental semiconductor and GaN is a compound semiconductor.Ĭhowdhury: Some elements are semiconductors by themselves, or they can be mixed with another element to become semiconductors. Short answer: Semiconductors can be made of a single element or combination of elements in the form of a compound. What materials are semiconductors made of? ![]() Sometimes you will have one or two atoms or more missing from a given set of lattices and those give vacancies, or defects. Last but not least, through the lens of a material scientist, we have lattices – a repeated geometrical pattern – of atoms that create a very crystalline structure. ![]() If you see through the lens of charges, like an electrical engineer, the current in a semiconductor is generally carried by electrons or holes, or both. They can combine to emit light or generate heat! Holes are positive in charge and electrons are negative. ![]() A valence band, which otherwise is full of electrons, has some empty states that are called “holes”. This is how a semiconductor conducts current. In the conduction band, only some of the states are filled with electrons and the others remain empty, where the electrons can jump into. The bands are full of “rooms” for electrons, which are called states. They see two energy bands – a conduction band and a valence band – and a very important energy gap (aka bandgap) that separates the two. Short answer: To a materials scientist, a semiconductor is a crystal with atoms and defects to a physicist, it has a conduction band and valence band and to an electrical engineer, it has electrons and holes.Ĭhowdhury: You can see semiconductors in the frame of energy, which typically device physicists do. The smarter the world gets, the more the need for semiconductors will increase. Semiconductors are so important because you cannot run your daily life without them. They are in your computer, your cell phone, your watch, your car, and even in LED lights. Short answer: Any electronics that you see, hold, or touch all have a chip – or several chips – inside that is made out of semiconductors.Ĭhowdhury: We’re always among semiconductors. You can make it conduct or block current by design! Copper will always conduct and wood will never conduct (because it’s an insulator). If you think of a metal, like a copper wire, and you think about electricity flowing through it, you cannot generally switch it off without taking away the source or supply – like using a wall switch to stop the flow of current through the wiring of your room into your light bulb. Short answer: Semiconductors can conduct electricity in some situations but block it in others.Ĭhowdhury: A semiconductor is a chemical element or compound that conducts electricity under certain conditions and blocks it in other conditions. What is the definition of a “semiconductor”? What does the future of semiconductors look like?ġ.What would say to someone considering studying semiconductors?.What work from your group are you most excited about?.What advances seem less likely in the near-term?.What major advances in semiconductor technology are coming soon?.What are the biggest challenges in semiconductor technology or production?.Why are semiconductors a topic in political news?.Why are there concerns about a semiconductor shortage?.What is “Moore’s Law” and how does it relate to semiconductors?.What do semiconductors have to do with computers?.What materials are semiconductors made of?.What is the definition of a “semiconductor”?.In addition to a wide range of evaluation boards and reference designs, ST offers software simulators and analysis tools to help engineers quickly get their designs to market.Here are 14 questions Chowdhury answered : Several package options are available, from SMD plastic to ceramic and ST’s innovative STAC® air cavity package featuring 25% lower thermal resistance, improved RF performance and best-in-class reliability. Industrial, Scientific and Medical (ISM).They are a perfect fit for applications ranging from 1 MHz to 4 GHz, such as: With more than 35 years’ experience, ST offers a broad portfolio of Radio Frequency power transistors operating from 7 to 100 V. These unique features result in high-performance and cost-effective solutions. They exhibit outstanding RF gain and power saturation, higher breakdown voltage, improved ruggedness and reliability (higher MTTF). ST's RF transistors are manufactured using an optimized process layout designed to improve RF performance. ![]() ![]() ![]() If you are interested in learning more about C.O.P.S., or donating to its cause, you can visit its website. “Over time, your grief changes,” Schwartz said, reflecting on the 21 years that have passed since she lost her husband. to support Vakoff’s family, and the others who will find themselves enduring the same heartbreak. In the meantime, though, they are volunteering through C.O.P.S. And sometimes, I don’t think that necessarily translates to everybody in the public.”īoth Cook and Schwartz want to see a shift in the way society views law enforcement and the dangers they face on the job, they said. “Underneath the badge and the uniform is a real human being. We have to have the best equipment to keep us safe. ![]() Jason is remembered adoringly by friends and family in exactly that waybright. And so, how that affects us as law enforcement officers is that we have to be ready to deal with those situations, and part of that is our training. Schwartz PLLC in Fort Worth.Jason and Melody married in 2003. “There’s a lot more situations with firearms involved where actually shots are being fired. “We’re seeing that every day, when we go on calls, the types of calls that we go on are a lot more acute, a lot more dangerous,” said Sergeant Robert Cook with the Larimer County Sheriff’s Office, who is also a volunteer for C.O.P.S. According to the National Law Enforcement Officer Memorial Fund, shooting deaths of officers are up 18% compared to last year, and domestic disturbance calls are the leading cause. Officer Jason Schwartz was shot and killed while responding to a domestic disturbance call, just as Officer Dillon Vakoff was earlier this week. So, I went from married, happily married with a baby to a solo parent.” “I had literally five weeks early just had a baby. So nationally, we had this big tragedy, and then locally in our small town, we did,” Schwartz said. And he was killed in the line of duty 17 days after September 11th. “21 years ago, my husband was a police officer in Fremont County in southern Colorado. Most of the volunteers of the organization were at one point beneficiaries of its support, including Schwartz. The club she’s referring to is C.O.P.S., which stands for “Concerns of Police Survivors.” It’s a network of support for officers and family members who have lost a loved one in the line of duty, and offers both emotional comfort and solidarity as well as financial assistance with counseling, travel to memorial ceremonies and more. “But you do, and it’s best thing that happened to me with my grief.” ![]() “It’s a club you don’t intend to join,” said Sheryl Schwartz, clutching a blanket inscribed with her late husband’s name. In the darkest moments of their lives, the solidarity they find can become a soul-saving bright spot. Among those paying their respects to fallen Arvada Officer Dillon Vakoff are members of a small but powerful support network, who know personally the pain of losing a loved one in the line of duty. ![]() ![]() The most benefits of a playground or playset is swing. Gorilla Vs Rainbow Playsets - Heavy-Duty Swing Beam It’s important you know that the beams are strongly joined together with a recommended beam knot like the galvanized metal. So, ensure the pieces are built with hot dipped galvanized metal, that has the capacity to resist corrosion that causes your playset to be weak and not safe for kids. Just as the wood used to construct your backyard playground is important, likewise the mental that is used to connect the set and fasten each component together. Gorilla Vs Rainbow Playsets - Sturdy Hardware Consumer Product Safety Commission (CPSC) to safely set up playsets. It’s not enough for the beam to be resistant to rot, insent, and decay but when there is an improper installation the whole playset will be unsafe for kids.įollow the backyard playsets equipment safety guidelines that’s set-up by the American Society for testing and Material work (ASTM), and also the guidelines by the U.S. This will help you have solid beam construction. It’s advisable to buy from shops that offer installation service. However, playsets installation is very important. Beam joints are important aspect of playsets. ![]() The rainbow playsets offer maximum safety to children than the gorilla playsets because of the different types of wood materials used in the construction of the playsets.īut when it comes to beam construction, the rainbow and the gorilla playsets maintain the same rule of glues the parts strongly. Once any beam is cracked or bucked out, then, the safety of the kids is in danger. The point where the beams are joined together can easily crack, warp, and buck out of the pline line if it’s not well glued. Wood playsets has many beams which are joined and glued together from different cuts make many to be concern about safety. The strength of the materials and the solid beam construction is one of the factors that determine safety of the playset. The type of wood material used in constructing playsets, is the major factor that determines how safe it will be.Īlso, how solid is the beam construction is another way that shows how safe the playset will be. In as much as you want kids it have fun, safety is the number one objective you don’t need to play with. Safety features of playsets are important factors, you need to consider before buying any playsets.
![]() But you can expect to get the most information you need on the person you’re looking for, which is kind of value-for-money. Social Catfish is a subscription-based service. Here you’ll see a bunch of information on the person.(Be sure to crop the image to remove any added details from screenshots. Upload an image from your device and click Search.Navigate to the Reverse Image Search page.Here is how you can do a reverse image search on Social Catfish to find people and verify identities: Additionally, you’ll receive an alert if the person is a scammer! It scans millions of social profiles including the biggest social networks like Facebook, Twitter, and Instagram, and even sites like forums and other online networking sites. What you need to do is upload a picture and wait for the service to search its database. The most effective way to conduct a reverse image search is to take advantage of a reverse lookup search engine, like Social Catfish. Below we’ll show you the best tools to do this. Whatever the reason might be, you can conduct a reverse image search on the person to find more details. They create personal profiles using stolen photographs of attractive people for the purpose of attracting people. ![]() As romance scams often take place through online dating websites. It’s better to uncover the truth before you delve into an intimate relationship. Or you receive a picture from an online date and you’re curious about their real identity. You may want to reconnect with an old friend, but all you have is their picture. ![]() ![]() ![]() Surf therapy, which spans projects from Sierra Leone to California and Trinidad, is seen by advocates as a compelling solution to help address mental health issues among young people. "This is about creating a different world for them. "But we don't ask questions if they don't want to talk," adds Villarán. One of the boys has turned up for lessons with a black eye a couple of times. Some girls have told members of the team that they are victims of sexual violence. Some parents are addicted to drugs and alcohol, he says. Many of the children in the Alto Peru program face challenging circumstances, according to Villarán, who was born and raised in the neighborhood and knows the families. Lima's surf therapy initiative is run by Alto Peru, a local nonprofit named after the notoriously dangerous, marginalized neighborhood in the south of the city where Villarán – its 41-year-old founder – and all of the trainee surfers come from.įounder Diego Villarán with kids in a playground built by Alto Peru, the nonprofit group that he heads up. It's not just a surfer's pipe dream either – studies have shown that surf therapy can foster self-esteem, fight off depression and even help to heal post-traumatic stress disorder. The wider goal is to create a space for young children to express themselves carefree, to help teach them how to process their emotions and to create positive social connections. The idea is not only about catching waves to tap into the proven mental health benefits of physical exercise. This Peruvian surf school is part of a wave of community-based projects around the world that uses a perhaps surprising method to help kids: surf therapy. Boran Bumovich Hignio, a 7-year-old surfer, gets help with his wetsuit from Diego Villarán, who founded the local surf school, and other staffers. ![]() ![]() ![]() ![]() If the password management service has patched any vulnerabilities, then it could be a good choice. One of the key pieces of advice that security experts (ourselves included) give is to take a look at whether the password management service has been hacked before or not, as well as whether it ‘features’ any security vulnerabilities that white-hat hackers have shared with the service providers. But how do you pick the best password management service? This is what security experts have been advocating for years because these tools create a safe environment in which users can store all of their credentials and financial data without the hassle of remembering each and every username and password. What this means is that passwords are here to stay, at least for the time being, and your best shot at both generating unique and cryptographically secure passwords and retrieving them whenever they’re needed is with a password manager. Just ensure you close the service completely when not using it and set up two-factor authentication for extra protection.Of the many ‘silver bullets’ out there looking to finally slay the password, none have been able to succeed. So please don’t stop using your password manager just yet. There are solutions that amount to ‘putting the information under the rug’ but any attacker sufficiently sophisticated enough to remotely take control of the user’s device would go around these solutions very easily.” Once the operating system or device is compromised, an attacker will end up having access to anything on the device and there is no way to effectively prevent it. Schalit says Dashlane is working on improving over the long term and adds: “We respectfully disagree with the researcher’s claim that this can be truly fixed by Dashlane, or anyone for that matter. “This only applies to the data present in the memory of the device when Dashlane is being used by a person who has typed the master password.” Schalit is also keen to point out that data stored by Dashlane on the device is encrypted and cannot be read by an attacker even if they have full control. And he says: “This is not limited to Windows 10 but applies to any operating system and digital device connected to the internet.” “As long as people are not committing the cardinal sin of reusing passwords and can recognise password managers as a security measure rather than a vulnerability, we will all be far safer in no time.”Įmmanuel Schalit, CEO, Dashlane - one of the affected password managers - points out that the ISE findings cover “a very standard theoretical scenario in the world of security”. “Plus, if you attach an authenticator application, such as Authy or Google Authenticator, to the password, your accounts will remain far safer,” he advises. This is because setting up most managers requires two factor authentication on any new device, which “talks” to the server where the stored passwords are held.Īt the same time, he says, if you use a password manager on your smartphone, you will be far better protected as this attack focuses primarily on computer RAM. Stealing master passwords still may not be effective for hackers, says Jake Moore, cyber security expert at ESET. This would require either physical access or remote access into the victim’s machine. Meanwhile, terminate the process completely if you are using one of the affected password managers.Īnd how serious is it? For this attack to pay off, the hacker would need access to the RAM. It’s all well and good to call out problems with password managers, but what should you use instead? First, do not throw away your service just yet: even the ISE recommends that you keep using password managers, just follow a few simple steps.Ĭrucially, you should not leave a password manager running in the background, even in a locked state. Should you stop using your password manager? “Given the huge user base of people already using password managers, these vulnerabilities will entice hackers to target and steal data from these computers via malware attacks,” says ISE lead researcher, Adrian Bednarek. ![]() And once the master password is available to the attacker, they can decrypt the password manager database.Īs the ISE points out, this is no safer than storing it in a document or on the desktop something that certainly isn’t advised. Worryingly, the researchers found that in some circumstances, the master password was residing in the computer’s memory in a plain text readable format. You would, naturally, think the password manager was safe when locked, but it’s not, according to the ISE. ![]() The study looked at the underlying functionality of these products on Windows 10 to understand how users’ secrets are stored even when the password manager is locked. ![]() ![]() ![]() This type of shuttle is often used by friends or family members who are traveling together. Private Airport Shuttle Overview Example of a Private Shuttle ServiceĪ private shuttle from the airport is a service that picks up and drops off passengers exclusively at their requested location. Finally, private airport shuttle services usually cost more than shared airport shuttle services. ![]() Second, both types of shuttle service offer different amenities and levels of convenience. First, private airport shuttle services are booked specifically for one person or a small group of people, whereas shared airport shuttle services are open to anyone who needs a ride. There are a few main differences between private and shared airport shuttle services, and it’s important to evaluate each one when considering which type of shuttle is going to be the best for your particular circumstances. Let’s take a closer look at the main features and benefits associated with both types of airport shuttle services. So you have an upcoming business trip or vacation and need a way to get from the airport to your accommodations and you’re thinking about using an airport shuttle service but which one? The first thing to consider is going to be whether to use a shared or a private shuttle. Private Airport Shuttle vs Shared Airport Shuttle Conclusion.Which Type of Airport Shuttle Service is Best for you Private or Shared?. ![]() Private vs Shared Airport Shuttle Service. ![]()
![]() ![]() Riding the Staten Island Ferry to Manhattan, a young Robert Diggs (the future RZA) frequented old grindhouse movie theaters around Times Square to see kung fu movies-including “Shaolin and Wu Tang”-that came to dominate his imagination, along with that of his cousins and friends. Staten Islanders argue that the rest of the city is a bunch of parochial bellyachers who have not taken the time to get to know Staten Island. Most New Yorkers, if they can be bothered to have a view of Staten Island, contend that it’s a sleepy, insular borough that is so not worth the effort exploring-that when people get off the ferry-ride past the Statue of Liberty, they should just turn around, their backs to the borough. But perhaps nowhere has the Wu’s imagination and impact been so deeply felt as in their home borough-a place which you’d think is separated from the rest of New York City by far more than a bay, given how the two sides-and it does feel like only two sides-speak of each other. The storied troupe of rappers-cum-conceptual artists who emerged from the Stapleton and Park Hill housing projects in Staten Island, after “forming like Voltron” around their leader, RZA, in the early 1990s, has been a cultural force ever since. And it’s the basis for a map that charts New York’s least understood borough-Staten Island-through how Staten Island has been potently reimagined, even as it remains a place as well known as a home to cops than hip-hop, by its best-known modern cultural export: the Wu-Tang Clan. That’s one of the ideas guiding Nonstop Metropolis, the atlas of New York City that I co-edited with Rebecca Solnit. And this geography can be every bit as important to how we imagine a place, or form our myriad attachments to it, as its pavements or its air. The “geography” of a place, in this sense, is comprised of the maps we make of it, notably, but also of songs and stories that evoke it. The second is more meta-it refers to what’s suggested by the etymology of “geography” ( geo-graph-“to write the world”): it adheres less to earthly places than to how we represent them. The first sense is literal-the concrete roads and rivers or hills, the bits of location and soil, that comprise that spot on the earth’s skin. To speak of the geography of any place is to invoke at least two distinct senses of the word. The following appears in Nonstop Metropolis, by Rebecca Solnit and Joshua Jelly-Schapiro. ![]() |
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