A web-crawler (also known as a web-spider) traverses the webpages of the internet by following the links of urls contained within each webpage. There is usually an initial seed of URLs from which the crawler is given to initialize its crawl.

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-9
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2answers
39 views

Get all urls of a website [closed]

I wanna build a tool which scans a website for all urls, but not the urls within the page but of the site self, but I don't know how. Could anyone give me an example how I can start? Example: ...
0
votes
1answer
62 views

Tool or website to check links

We supply Magento and Typo3 installations to customers. To improve QA we wanted to use an automatic link checker to check for broken and/or outdated links - automatically. We want to check all links ...
3
votes
1answer
81 views

Why is googlebot requesting robots.txt from my SSH server?

I run ossec on my server and periodically I receive a warning like this: Received From: myserver->/var/log/auth.log Rule: 5701 fired (level 8) -> "Possible attack on the ssh server (or version ...
-3
votes
1answer
38 views

is there any web crawler can get access to users region for download? [closed]

Actually I am using Httrack as a web crawler, can it use my credentials to access members area and download the zip files because they are restricted from public access. Thank you in advance. ...
0
votes
2answers
140 views

Protection against scrapping with nginx

This morning we had a crawler going nuts on our server hitting our site almost 100 times per second. We'd like to add a protection for this. I guess I'' have to use HttpLimitReqModule but I don't ...
0
votes
1answer
36 views

Referrer in access.log is a directory

It seems that the referrer on the following log is a folder. 112.200.208.5 - - [29/Jul/2013:20:43:14 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 294677 ...
0
votes
1answer
113 views

How to Block Web Crawler from Downloading File

Is it possible to block web crawler from downloading files (like zip file) in my server? I supposed to create a PHP script using cookies to track visitors specially web crawlers to login/register ...
1
vote
0answers
87 views

How to Exclude Log Using Fail2Ban logpath with Wildcard Settings

I'm using wildcard in the logpath value as shown below: [http-get-dos] enabled = true filter = http-get-dos logpath = /var/log/ispconfig/httpd/*/access.log maxretry = 250 findtime = 300 #ban for 10 ...
1
vote
1answer
213 views

How to ban web crawler using fail2ban

I am using nginx and I am always hit by web crawler if I am correct. I tried to configure fail2ban but the IP address cannot be detected by fail2ban. The reason that it is not detected because it ...
0
votes
1answer
62 views

Is there a chance to block images spiders / bots on dedicated servers without using robots.txt or .htaccess?

We know that we can block certain spiders from crawling websites pages using robots.txt or .htaccess or maybe via the Apache configuration File httpd.conf. But that requires to edit may be a large ...
2
votes
2answers
57 views

Strange “GET /api/levels/ ” and “GET /play/” requests in logs

I've setup new Amazon EC2 instance. In a day or two started to get strange "GET" requests from the "google bot-like" IP's (eg 66.249.76.84, 66.249.74.152) about one in 10 seconds (some examples): ...
-2
votes
1answer
20 views

How to fix the correct html file as homepage? [closed]

A search for my domain shows defaulthomepage along with html file that my hosting service, using plesk 9.5.4, provides as a placeholder. I have since deleted the old index file and added a new ...
0
votes
1answer
86 views

How do I scan my folders for a website? Like a crawler?

I'd like to scan all the url's on my website as well as get the files in them, but the thing is, there are too many for me to do this manually so how would I do this? I'd like it formatted anyway as ...
1
vote
1answer
101 views

Googlebot repeatedly looks for files that aren't on my server

I'm hosting a site for a volunteer organization. I've moved the site to WordPress, but it wasn't always that way. I suspect at one point it was hacked badly. My Apache error log file has grown to ...
1
vote
2answers
475 views

How to create a global robots.txt that gets appended to each domain's own robots.txt on Apache?

I know can create ONE robots.txt file for all domains on an Apache server*, but I want to append to each domain's (if pre-existing) robots.txt. I want some general rules in place for all domains, but ...
1
vote
3answers
849 views

How to block this URL pattern in Varnish VCL?

My website is getting badly hit by spambots and scrappers, I am using Cloudflare but the problem still remains there. The problem is spambots accessing non-existing urls causing a lot of load to my ...
3
votes
3answers
1k views

How do I use robots.txt to disallow crawling for only my subdomains?

If I want my main website to on search engines, but none of the subdomains to be, should I just put the "disallow all" robots.txt in the directories of the subdomains? If I do, will my main domain ...
0
votes
1answer
57 views

Webmaster randomly reporting a massive increase in 404s (apparently from old sitemaps)

Well, I'm stumped. Several months back, we launched a totally new website, replacing a legacy system that was pretty messy. Part of the mess was many, many pages created that really didn't need to be ...
2
votes
2answers
170 views

ethical/legal consideration when redirecting

A webcrawler has bought our site down twice, it ignores our robots.txt and we have had no reply from their customer services or support using both e-mail and twitter. I have had to create url ...
3
votes
2answers
326 views

Does google's web crawler download binary files?

My Google-fu is failing me right now. I'm trying to figure out whether Google's web crawler downloads non-image binary files when it spiders sites. I know it downloads (and indexes) images and PDFs, ...
1
vote
3answers
2k views

Blocking 'good' bots in nginx with multiple conditions for certain off-limits URL's where humans can go

After 2 days of searching/trying/failing I decided to post this here, I haven't found any example of someone doing the same nor what I tried seems to be working OK. I'm trying to send a 403 to bots ...
3
votes
3answers
703 views

Search Engine for Network Shares

We have a clustered storage server that contains many project files like Corel, Indesign, Edius, Adobe Premiere, etc.. Also it has lots of image, audio and video files. We are using sharepoint and ...
-4
votes
1answer
530 views

Bot being redirected to Google.com when requests Myspace.com… what? [closed]

first time on Serverfault. I'm having a problem connecting to Myspace.com through my server. I've been using mechanize via Python to run a bot, (not spam, crawling for information on musicians) on a ...
1
vote
1answer
203 views

Does a forward web proxy exist that checks and obeys robots.txt on remote domains?

Does there exist a forward proxy server that will lookup and obey robots.txt files on remote internet domains and enforce them on behalf of requesters going via the proxy? e.g. Imagine a website at ...
-2
votes
1answer
169 views

Whats the best server-language for programing a Webcrawler? [closed]

I would like to ask what language: ASP.NET / Ruby / CGI / Perl / Python / ColdFusion... would be the bes for programming a Webcrawler and for processing the contained information???? (it should ...
-1
votes
1answer
634 views

Using wget to get count of pages below a link?

I've been using a sitemapping tool to get a simple count of links below a specific url. The free trial has ended, so I figure that rather than paying $70 for what is very simple functionality, I ...
0
votes
1answer
762 views

What is “/admin/Y-ivrrecording.php?php=info&ip=uname”?

Help me please, I found an IP address from Korea try to do something with my web server by put this '/admin/Y-ivrrecording.php?php=info&ip=uname' like search a filename from my web server. I ...
8
votes
5answers
5k views

How are these 'bad bots' finding my closed webserver?

I've installed Apache a while ago, and a quick look at my access.log shows that all sorts of unknown IPs are connecting, mostly with a status code 403, 404, 400, 408. I have no idea how they're ...
0
votes
2answers
504 views

Methods to prevent malicious crawlers/scrapers and DDoS Attacks [closed]

From last couple of weeks I have been experiencing bot attacks on my site. Basically crawlers are running on the site at a high frequency rate resulting in load increase. This results in bandwidth ...
0
votes
2answers
1k views

Is it good idea to ban amazonaws.com [closed]

Site are crawled by anonymous bot hosted on amazon ec2. This robot doesn't respect robots.txt and creates high load on web server so I added check if reverse IP for request ends with "amazonaws.com" ...
1
vote
1answer
556 views

Strange request in access.log, how to block?

I am using nginx on my own server, and I noticed a few days ago some strange request in my access.log : 77.50.217.37 - - [19/Aug/2011:17:50:50 +0200] "GET http://images.google.com/ HTTP/1.1" 200 151 ...
0
votes
1answer
190 views

Any good webcrawler besides DRKSpider

I was having a look at DRKSpider to find problems with a website in our production server, but it seems its export feature generates different outputs (with different content). My goal is to find a ...
2
votes
2answers
2k views

Apache crashing with memory/cpu overload when google crawler visits site

I have a site with low traffic, less than 500 hits a day. It has a 6G of memory and it is way underutilized, on average 5% is in use. But as soon as googlebot establishes a connection to my ...
0
votes
0answers
86 views

Sticky sessions with ELB except for crawlers (or at least google)?

I have a cluster of servers behind an elastic load ballancer. We need to use sticky sessions for users, but for Google crawler we would like it to be non sticky. Is this possible?
0
votes
2answers
69 views

Can access web application from browser but crawler application throws 404 erorr?

I am using an application called Xenu Link Sleuth to try and find broken links on a site we host. When I go to the site through a browser it pops right open. When I try to run it through Xenu it ...
0
votes
1answer
69 views

how to establish connection between drupal and solr

I am working on technologies like drupal & solr.I have installed all required modules.but i need to know that how to crawl data from drupal.& how to form connector between drupal & solr.
1
vote
1answer
838 views

How big would a MySQL database be if I save all webpages' title and URL in it? [closed]

For learning purposes, I want to make a simple web indexer which crawls the web and saves all found pages in a MySQL database with their titles and URLs, with this table (the page's content is not ...
1
vote
3answers
330 views

Should I ban spiders?

A rails template script that I've been looking at automatically adds User-Agent: and Dissalow: in robots.txt thereby banning all spiders from the site What are the benefits of banning spiders and why ...
0
votes
1answer
97 views

Web log file analysis software to measure search crawlers

I need to analyze the search engine crawling going on in my site. Is there a good tool for this? I've tried AWStats and Sawmill. But both of those give me very limited insight into the crawling. I ...
1
vote
1answer
153 views

Yahoo AdCrawler hammering our site

Yahoo AdCrawler is re-trying some URLs repeatedly. The URLs are being given a 302 response code, so I suppose Yahoo should come back and try again "later", but "later" in my book doesn't mean that 7 ...
0
votes
1answer
171 views

crawling [own] webpage for 404s

can you suggest linux tool that can crawl given page in search of 404s? yes - i can use wget in recursive mode or just watch access logs but maybe you have hints for better suited tool? thanks!
0
votes
1answer
184 views

Can I use a Google Appliance/Mini to crawl and index sites I don't own?

Maybe this is a stupid question, but... I am working with this company and they said they needed to get "permission" to crawl other people's sites. They have a Google Search Appliance And some ...
0
votes
3answers
125 views

Google APPS site - not being indexed

Help! Google crawlers appear to be visiting my site but it is not getting indexed, what am I doing wrong? Yahoo has managed to find the mydomain.appspot.com and has indexed successfully (albeit on ...
2
votes
4answers
3k views

Finding all IP ranges belonging to a specific ISP

I'm having an issue with a certain individual who keeps scraping my site in an aggressive manner; wasting bandwidth and CPU resources. I've already implemented a system which tails my web server ...
1
vote
2answers
1k views

Copy a website and preserve the file & folder structure

I have an old web site running on an ancient version of Oracle Portal that we need to convert to a flat-html structure. Due to damage to the server we are not able to access the administrative ...
2
votes
3answers
246 views

How much HDD space would I need to cache the web while respecting robot.txts? [closed]

I want to experiment with creating a web crawler. I'll start with indexing a few medium sized website like Stack Overflow or Smashing Magazine. If it works, I'd like to start crawling the entire web. ...
1
vote
3answers
868 views

Is it worthwhile to block malicious crawlers via iptables?

I periodically check my server logs and I notice a lot of crawlers search for the location of phpmyadmin, zencart, roundcube, administrator sections and other sensitive data. Then there are also ...
0
votes
2answers
276 views

How should I interpret site analytics with 11 pageviews in an 3 second visit?

I'm using google analytics and recently i've noticed some weird trends going on. I have a lot of visits that last mere seconds but mark several page views... more than a normal human can see in that ...
0
votes
1answer
109 views

Getting web.archive.org to archive website again

I noticed that my website isn't archived anymore by web.archive.org. When I look at http://web.archive.org/web/*/http://www.cnn.com it is clearly visible that it stopped working in july 2008. ...
2
votes
3answers
370 views

Firewall - Preventing Content Theft & Rogue Crawlers

Our websites are being crawled by content thieves on a regular basis. We obviously want to let through the nice bots and legitimate user activity, but block questionable activity. We have tried IP ...