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• What does the arxiv.org anti-bot "search and destroy" actually do?

  - by Brian Campbell

  The lanl.arxiv.org math and scientific preprint service (formerly known as xxx.lanl.gov) has a strict policy against bots that ignore its robots.txt, Robots Beware. On that page, the have a link labelled with "Click here to initiate automated 'seek-and-destroy' against your site", which is forbidden by their robots.txt but presumably badly behaved robots will follow it, and reap the consequences. The question, what are the actual consequences? I have never had the guts to actually click on that link to see what it does. What can they be doing that is both effective and legal?

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• Are there any online payment services simliar to paypal that do not require customers to setup accou

  - by shady

  I'm integrating PayPal on a client's site and they are not happy with the fact that their customers would have to sign up for an account before they can make a purchase. They like the price of PayPal, but don't really like the interface. Could I offer them an alternative service to PayPal that would allow me to setup a checkout page directly on their website and not require their users to create accounts?

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• Spawn phone call from EC2 alerts

  - by Matt

  I have a system setup on AWS/EC2, it currently is using their CloudWatch alert system. The problem is this sends just to email, when ideally I would like this to be making a phone call and/or sending text messages to certain phone numbers when an alert fires (Note that I do not need the phone call to actually say anything, just call the person). We are trying to solve the problem that Amazon alerts are only useful if people are checking their email, which isnt always the case because all server problems love to happen at 4am on saturday... Please respond with any possible solutions/ideas, ideally I do not want to implement an entire monitoring system (IE: Nagios) on top of everything to handle this.

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• What is a DART Iframe?

  - by Chas. Owens

  This Google page refers to a "DART Iframe". Does DART stand for something? I seem to be missing some crucial piece of cultural understanding.

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• How GZipped contents are transfered on the web?

  - by PJ

  I heard that static contents like CSS and JavaScript can be better delivered in GZip format. And Content Developer Network (CDN) always does so. However I don't understand how the format works. First when I tried making a gzipped file via command-line. The file extension is .gz. This is different from .css and .js. How do browsers recognize which file is gzipped or not. Second, how browsers "decompress" files? I dragged my index.html.gz onto my browsers. But no one worked. How do such gzipped work in the real world? What do I need to do if I want to serve CSS/JavaScript using Gzipped format.

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• Caching Reverse-Proxy ISP Host for a Low-Bandwidth Server

  - by Casey

  I am building a webcam w/ HTTP server that will be running from a low-bandwith connection. The content on the site will be changing every 5 to 10 minutes. Instead of serving files directly from this connection, are there hosting companies that can act as a reverse proxy for my site? Therefore, if nobody is using the site, the local internet connection remains idle. And if I receive 1000 hits all at the same time, only one HTTP GET is required, and the hosting company (on a fat pipe) continues serving the other 999 requests? This doesn't sound like a very common usage model, but I feel like this would be the optimal solution to my situation.

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• Migrating an Active Directory domain controller to AWS

  - by Xavier Hutchinson

  I am required to migrate a Active Directory server into AWS with a couple other servers (SQL and IIS) to create a dev and test environment for our network / development. My plan at this time is to simply rebuild the Active Directory server in AWS from scratch - which is quite time consuming indeed! I was wondering if anyone had a recommendation as to a better and more efficient approach of migrating a copy of a physical Active Directory server to the cloud? The server is Windows Server 2012. Thank you!

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• Start tomcat webapp with root privileges

  - by Hagay Myr

  I built a webapp that uses libpcap (via jpcap). In order to be able to get the network interfaces list or to bind to a network interface, the application (in this case a webaap that runs from tomcat server) must be running with root privileges. During development I simply ran Eclipse with root privileges (sudo eclipse) and my webapp worked just fine with Eclipse's local tomcat server. However, when I try to deploy my webapp to the "real" tomcat server, it isn't working. I Also tried to start the tomcat6 service with sudo and changed the TOMCAT6_USER definition (defined in /etc/init.d/tomcat6) from "tomcat6" to "root" but it made no difference. What should I do to make it work?

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• background colors not showing up in web browsers

  - by Happy Hamster

  This is a strange one...I have a customer for whom background colors don't show up in either Firefox or IE. For example, check out msn.com. See how theres a blue background? For my client, that background shows as white. Any thoughts? I couldn't find any settings to affect this issue.

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• Way to show internet shortcut files with web thumbnail

  - by jay

  Is there a program or some registry hack that could let internet shortcuts show a preview of a the website instead the default static icon?

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• AWS RDS Timeout

  - by warder57

  I know next to nothing about networking/servers. So I'm assuming I'm missing something obvious. All of the resources I can find on this, either don't work or are outdated. I created a brand new AWS account on the free plan. I created a postgres RDS DB instance. I made sure that this RDS instance is set to publicly accessible. This RDS instance has the default VPC/Security Group settings. In order to connect to this DB from my local machine, I used pgadmin3 and followed the instructions provided on the AWS documentation page. Seen here: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ConnectToPostgreSQLInstance.html I've double checked all of the information required to connect: Host: whatever.whatever.us-west-2.rds.amazonaws.com Port: 5432 Username: USERNAME Password: PASSWORD When I try to connect to the database, my connection fails due to a timeout. (During step 4 in the above guide.) Can anyone point me to whatever I am missing? Thanks in advance

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• What are the steps needed to set up and use security for AWS command line tools?

  - by chris

  I've been trying to set up the AWS command-line tools following Eric's most useful guide at http://alestic.com/2012/09/aws-command-line-tools. I can't seem to find a good how-to for how to generate the x509 certificate and private key, and how that relates to the various security files the guide creates. Update: I have found a couple of links that describe the some steps. These steps seem to work, however I'm not sure if this is secure & the best way to do it: 1) Create a private key openssl genrsa -out my-private-key.pem 2048 2) Create x.509 cert openssl req -new -x509 -key my-private-key.pem -out my-x509-cert.pem -days 365 Hit enter to accept all of the defaults. Then, from the IAM Dashboard, User, select a user & click on the "Security Credentials" tab. Click on "Manage Signing Certificates", then "Upload Signing Certificate", paste in the contents of my-x509-cert.pem, click OK and it should be accepted. One step that is discussed, but not required for me, was the addition and subsequent removal of a pass phrase on the private key. Should I have been prompted for one, and is my cert potentially unsafe because of this?

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• Running a webserver behind a firewall I have no access to

  - by reijin

  I'm having a bad time in my student appartment: I want to run a webserver on my Laptop, which should be reachable from outside of the net. I'm sitting behind some proxy-server that passes outgoing packets to the matching server. But when it comes to incoming messages - it wouldn't route them correctly to my PC. (Seems like packets only get passed if some PC from within the student-flat is already connected to the sending server) In the past I had a small virtual private server that was sending incoming website-requests over a reverse shell to my PC. Which then returned the website content, and the visitor could see my website. Sadly I dont have that server anymore... Do you have any idea that might solve my problem? Greetings, Benedikt

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• How to add ISAPI web service extensions on IIS 5.1 using command line

  - by Roman Prikhodchenko

  Hi! I need to install an ISAPI extension on IIS 5.1 using command line. On windows server 2003 there is a script iisext.vbs but on windows xp it's not present.

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• cannot reach munin port on other AWS instance

  - by Amedee Van Gasse

  2 AWS instances, in the same region but different availability zones, one is in regular EC2 and the other is in VPC, both have an Elastic IP, both are 64bit Amazon Linux AMI 2014.03.1. Both are running munin-node. The instance in the VPC is running munin-cron. I have added incoming TCP and UDP port 4949 to the security groups of both instances. On the munin node, I added an allow-line with the IP address (regular expression) of the munin server to /etc/munin/munin-node.conf. I bind munin-node to any interface using host *. Then I did sudo service munin-node restart. Then I ran netstat. $ sudo netstat -at | grep munin tcp 0 0 *:munin *:* LISTEN So the port is open there. On the munin server AND on the munin node: $ nmap AMAZON-IP -p 80,4949 | grep tcp 80/tcp open http 4949/tcp closed munin On the munin node: $ nmap localhost -p 80,4949 | grep tcp 80/tcp open http 4949/tcp open munin So from the outside, the http port is open (Apache is running) but the munin port is closed. The node can't even reach the munin port on it's own public IP address, but it can on localhost. I added port 80 as a sanity check, to be sure that there is network connectivity at all. So what am I overlooking here?

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• Amazon AWS VPN how to open a port?

  - by Victor Piousbox

  I have a VPN with public and private subnets; I am considering only public subnet for now. The node 10.0.0.23, I can ssh into it. Let's say I want to connect to MySQL on the node using its private address: ubuntu@ip-10-0-0-23:/$ mysql -u root -h 10.0.0.23 ERROR 2003 (HY000): Can't connect to MySQL server on '10.0.0.23' (111) ubuntu@ip-10-0-0-23:/$ mysql -u root -h localhost Welcome to the MySQL monitor. Commands end with ; or \g. --- 8< --- snip --- 8< --- mysql> The port 3306 is not reachable if I use the private IP? My security group allows port 3306 inbound from 0.0.0.0/0 AND from 10.0.0.0/24. Outbound, allowed all. The generic setup done by Amazon through their wizard does not work... I add ACL that allows everything for everybody, still does not work. What am I missing?

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• Web Server for SVN+PHP+Django+Rails

  - by NetStudent

  Foreword: I am not asking for the differences between Nginx and Apache, nor do I want to start a "which one is better discussion. I would like to ask for help with choosing the most adequate solution for this particular situation. I need to setup one or more l SVN repositories accessible via HTTP, plus some PHP, Django and Ruby websites. However, and since I only have 512Mb of RAM at my disposal, I fear that Apache will be a too heavy choice... On the other hand, I have heard that Nginx does not fully support SVN (WebDAV) and Django without reverse proxying to Apache. Is this still true? Should I go for Apache/Nginx alone? Or should I set up both and have Nginx handling static content and proxying to Apacge for dynamic content?

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• How to configure Amazon Security Groups to achieve multi-tier architecture?

  - by ks78

  What is the preferred way to configure Amazon Security Groups to achieve a multi-tier architecture? Each of my instances has its own Security Group, which I only want to use for rules specific to an instance. I'd like to keep any rules which apply to multiple instances in a separate Security Group, which can then be assigned to instance Security Groups as necessary. As an example, I've setup a group called "admin", which allows administrative access from my IP. I added the "admin" group as the source to each of my instance security groups. However, I still can't access the instances from my IP without adding the rules directly to the instance's group. Am I missing something? Although it seems a multi-tier security architecture should be possible, it doesn't seem to be working.

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• Should app config files be in jboss/bin directory?

  - by djangofan

  I am a Integration Engineer for a software company. My development team has generated various jboss .ear applications that rely on configuration files being in the jboss/bin directory and setting the CLASSPATH externally using batch files (on Windows from an external LIB directory) rather than using jboss's internally loaded classes. Is this the right/standard way of doing things? Would some other location be better (for the config files) such as jboss/server/instancename/deploy or some other directory? Any opinons on how I can direct my development team to doing things in a best practices fashion?

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• Creating url from the cloudfront aws

  - by GroovyUser

  I have my js files which I have uploaded into the Amazon S3 and linked it with the Cloudfront. I got a url something like this : dxxxxxxxx.cloudfront.net But opening that url in my browser ( I'm getting an error ) : <Error> <Code>AccessDenied</Code> <Message>Access Denied</Message> <RequestId>xxxxxx</RequestId> <HostId> xxxxxxxxxxxxxxx </HostId> </Error> But what I want actually is to use the url and add them to my webpage. How could I do that? Thanks in advance.

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• where is trac.ini ?

  - by asksuperuser

  I have setup trac with dreamhost one-click install, I read doc it says config is in trac.ini but can't see any under trac dir so where is it ? I have no conf dir ONLY admin, db, htdocs, prefs, etc... Is this the right forum or should I ask on server maybe ?

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• why does and EBS volumes mounted in an Ubuntu 12.04 EC2 instance as /dev/sdh1 appear as /dev/xvdh1?

  - by Andres

  When mounting an EBS volume on ubuntu specified as /dev/sdh1 it actually mounts it at /dev/xvdh1. The aws console still thinks it's mounted at /dev/sdh1 so it took a while to realize that it was actually mounted, just in the wrong place I ran into this problem a long time ago using ubuntu on ec2. I just ran into it again https://forums.aws.amazon.com/post!reply.jspa?messageID=351382 and it seems like I'm not alone: https://forums.aws.amazon.com/thread.jspa?threadID=68957&tstart=0 I haven't found a good answer as to why this happens or how to fix it. Any ideas?

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• problems with ASA 8.4 Nat Rules for a Web Server

  - by Marko

  Having problems with the NAT RULES and Access Rules changes on my ASA5505. Want to straight replace a 5505 with a newer 5505 and unfortunately this means dealing with old version 7.2 and the newer 8.4 configurations. my old NAT RULE: static (inside,outside) WebOutside WebInside netmask 255.255.255.255 and an Access Rule of: access-list outside_access_in extended permit tcp any host WebOutside eq www these dont work in 8.4 I understand there are some changed but I can find little information that makes any sense on how to configure these. Any pointers welcomed.

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• Differences between how OS X Snow Leopard and Lion interface with a proxy?

  - by Antoni

  We have a proxy at school, which requires a login/password, and blocks a certain number of sites that aren't "school related" (facebook, youtube, etc.) While I'm able to get through to most things, people who've upgraded to Lion can't get through to anything, even though I've replicated my proxy/network settings on their machines. Is it possible that the difference in OS versions is causing this? I have Snow Leopard, they have Lion.

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• How to make subdirectory the document root of a web domain or localhost

  - by Ben Huh

  I have a subdirectory abc in the document root /var/www/html I want to be able to run any file any_file.html within the subdirectory by typing in the browser: localhost/any_file instead of localhost/abc/any_file.html or my_domain.com/any_file instead of my_domain.com/abc/any_file.html I tried writing in httpd.conf: <Directory "/var/www/html/abc"> RewriteEngine On RewriteBase / RewriteRule %{REQUEST_FILENAME} %{REQUEST_FILENAME}\.html </Directory> But it doesn't work. Options FollowSymLinks is activated in <Directory> so I believe I would not need to write this again. Does anyone knows why and how to solve it? Thanks. Update: I have another subdirectory efg which I need to be able to access through localhost.

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