Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
May know what's the meaning of these parameters in .htaccess?
-
Begin HackRepair.com Blacklist
RewriteEngine on
Abuse Agent Blocking
RewriteCond %{HTTP_USER_AGENT} ^BlackWidow [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Bolt\ 0 [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Bot\ mailto:craftbot@yahoo.com [NC,OR]
RewriteCond %{HTTP_USER_AGENT} CazoodleBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^ChinaClaw [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Custo [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Default\ Browser\ 0 [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^DIIbot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^DISCo [NC,OR]
RewriteCond %{HTTP_USER_AGENT} discobot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Download\ Demon [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^eCatch [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ecxi [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^EirGrabber [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^EmailCollector [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^EmailSiphon [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^EmailWolf [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Express\ WebPictures [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^ExtractorPro [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^EyeNetIE [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^FlashGet [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^GetRight [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^GetWeb! [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Go!Zilla [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Go-Ahead-Got-It [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^GrabNet [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Grafula [NC,OR]
RewriteCond %{HTTP_USER_AGENT} GT::WWW [NC,OR]
RewriteCond %{HTTP_USER_AGENT} heritrix [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^HMView [NC,OR]
RewriteCond %{HTTP_USER_AGENT} HTTP::Lite [NC,OR]
RewriteCond %{HTTP_USER_AGENT} HTTrack [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ia_archiver [NC,OR]
RewriteCond %{HTTP_USER_AGENT} IDBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} id-search [NC,OR]
RewriteCond %{HTTP_USER_AGENT} id-search.org [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Image\ Stripper [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Image\ Sucker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Indy\ Library [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^InterGET [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Internet\ Ninja [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^InternetSeer.com [NC,OR]
RewriteCond %{HTTP_USER_AGENT} IRLbot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ISC\ Systems\ iRc\ Search\ 2.1 [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Java [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^JetCar [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^JOC\ Web\ Spider [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^larbin [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^LeechFTP [NC,OR]
RewriteCond %{HTTP_USER_AGENT} libwww [NC,OR]
RewriteCond %{HTTP_USER_AGENT} libwww-perl [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Link [NC,OR]
RewriteCond %{HTTP_USER_AGENT} LinksManager.com_bot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} linkwalker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} lwp-trivial [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Mass\ Downloader [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Maxthon$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT} MFC_Tear_Sample [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^microsoft.url [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Microsoft\ URL\ Control [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^MIDown\ tool [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Mister\ PiX [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Missigua\ Locator [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Mozilla.*Indy [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Mozilla.NEWT [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^MSFrontPage [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Navroad [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^NearSite [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^NetAnts [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^NetSpider [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Net\ Vampire [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^NetZIP [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Nutch [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Octopus [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Offline\ Explorer [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Offline\ Navigator [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^PageGrabber [NC,OR]
RewriteCond %{HTTP_USER_AGENT} panscient.com [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Papa\ Foto [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^pavuk [NC,OR]
RewriteCond %{HTTP_USER_AGENT} PECL::HTTP [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^PeoplePal [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^pcBrowser [NC,OR]
RewriteCond %{HTTP_USER_AGENT} PHPCrawl [NC,OR]
RewriteCond %{HTTP_USER_AGENT} PleaseCrawl [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^psbot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^RealDownload [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^ReGet [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Rippers\ 0 [NC,OR]
RewriteCond %{HTTP_USER_AGENT} SBIder [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SeaMonkey$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^sitecheck.internetseer.com [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SiteSnagger [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SmartDownload [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Snoopy [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Steeler [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SuperBot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^SuperHTTP [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Surfbot [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^tAkeOut [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Teleport\ Pro [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Toata\ dragostea\ mea\ pentru\ diavola [NC,OR]
RewriteCond %{HTTP_USER_AGENT} URI::Fetch [NC,OR]
RewriteCond %{HTTP_USER_AGENT} urllib [NC,OR]
RewriteCond %{HTTP_USER_AGENT} User-Agent [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^VoidEYE [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Web\ Image\ Collector [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Web\ Sucker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Web\ Sucker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} webalta [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebAuto [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^[Ww]eb[Bb]andit [NC,OR]
RewriteCond %{HTTP_USER_AGENT} WebCollage [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebCopier [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebFetch [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebGo\ IS [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebLeacher [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebReaper [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebSauger [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Website\ eXtractor [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Website\ Quester [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebStripper [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebWhacker [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WebZIP [NC,OR]
RewriteCond %{HTTP_USER_AGENT} Wells\ Search\ II [NC,OR]
RewriteCond %{HTTP_USER_AGENT} WEP\ Search [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Wget [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Widow [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WWW-Mechanize [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^WWWOFFLE [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Xaldon\ WebSpider [NC,OR]
RewriteCond %{HTTP_USER_AGENT} zermelo [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^Zeus [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^(.)Zeus.Webster [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ZyBorg [NC]
RewriteRule ^. - [F,L]Abuse bot blocking rule end
End HackRepair.com Blacklist
-
Now it's clear. Thanks a lot ThompsonPaul!
-
Thanks!
Typically these blacklists are created and maintained by security specialists who have done testing on the different bots to determine which are legit/beneficial and which are crapbots. They then provide these lists for others to use. Often the lists are amalgamations of bots detected and analysed on a number of different sites and by a number of different specialists to act as a double-check for each other.
You do need to be careful that you are using a well-curated list, as carelessly blocking bots can cause problems for legitimate bots. You would check out the creator of such a list the same way you'd check out the creator of a plugin you're considering using - check reviews, look at comments and responses on the post that provides the blacklist etc.
That answer your question?
Paul
-
Hi ThompsonPaul,
Wow! Superb explanation. One thing I just want to clarify, how would I know if these bots are "bad bots".
Thanks a lot!
-
As Lynn mentions, these entries form a blacklist for "bad bots". These are bots that are identified as being harmful (or at least non-helpful) to the real use of a website. Bots are essentially spiders that crawl and record the pages of your site the same way the GoogleBot does.There are 2 main reasons for blocking them
-
Too many unnecessary bots can put a real strain on server resources, causing the site to slow down for real users. This can be especially problematic with bad bots as they do not respect the entries in your robots.txt file and so will crawl even blocked pages. This can mean huge numbers of extra pages get crawled, leading to even more load.
-
Many (most?) of these bots are collecting data for nefarious purposes. Some are scrapers to collect your site content in order to re-use it illegally on another site, some are scanning for certain files/plugins on your site known to be insecure so they can target them for attack, etc.
Best case scenario, these bots waste your bandwidth and can cause site slowdowns on low-powered (e.g. shared) servers. Worst case, they can actually cause harm to your site.
There are literally many thousands of these types of bots out there, and their creators often change their identifying user agents just to get around these types of blacklists. But many have been around for some time and still use the same identifier. So having a blacklist to block the most common of them is actually very good security practice. To be totally proactive however, you'd need to update the list every couple of months.
Bottom line - those entries are providing some security and overload protection for your site, and there's essentially no downside to having them in place even if they're not catching everything.
Hope that helps - if any of my explanation isn't clear, just holler
Paul
-
-
Thanks Lynn! I'll just remove these parameters and leave this one:
BEGIN WordPress
<ifmodule mod_rewrite.c="">RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
Rewritecond %{http_host} ^domain.com [NC]
Rewriterule ^(.*)$ http://www.domain.com/$1 [R=301,NC]</ifmodule>END WordPress
-
I dont use something like this myself. I suppose if you are having some problem with bots it might be useful, maybe someone else can chime in if they have some experience with this kind of blocking.
-
Thanks Lynn! Is this really necessary?
-
HI,
It is checking to see if the visiting user agent contains any of these strings (NC is telling it non case sensitive) and if it does to return a 403 forbidden message.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Does Google ignore content styled with 'display:none'?
Do you know if an H1 within a div that has a 'display: none' style applied will still be crawled and evaluated by Google? We have that situation on this page on line 136: view-source:https://www.junk-king.com/services/items-we-take/foreclosure-cleanouts Of course we also have an H1 up at the top of the page and are concerned that the second one will cause interference with our SEO efforts. I've seen conflicting and inconclusive information on line - not sure. Thanks for any help.
Intermediate & Advanced SEO | | rastellop0 -
Moved company 'Help Center' from Zendesk to Intercom, got lots of 404 errors. What now?
Howdy folks, excited to be part of the Moz community after lurking for years! I'm a few weeks into my new job (Digital Marketing at Rewind) and about 10 days ago the product team moved our Help Center from Zendesk to Intercom. Apparently the import went smoothly, but it's caused one problem I'm not really sure how to go about solving: https://help.rewind.io/hc/en-us/articles/*** is where all our articles used to sit https://help.rewind.io/*** is where all our articles now are So, for example, the following article has now moved as such: https://help.rewind.io/hc/en-us/articles/115001902152-Can-I-fast-forward-my-store-after-a-rewind- https://help.rewind.io/general-faqs-and-billing/frequently-asked-questions/can-i-fast-forward-my-store-after-a-rewind This has created a bunch of broken URLs in places like our Shopify/BigCommerce app listings, in our email drips, and in external resources etc. I've played whackamole cleaning many of these up, but these old URLs are still indexed by Google – we're up to 475 Crawl Errors in Search Console over the past week, all of which are 404s. I reached out to Intercom about this to see if they had something in place to help, but they just said my "best option is tracking down old links and setting up 301 redirects for those particular addressed". Browsing the Zendesk forms turned up some relevant-ish results, with the leading recommendation being to configure javascript redirects in the Zendesk document head (thread 1, thread 2, thread 3) of individual articles. I'm comfortable setting up 301 redirects on our website, but I'm in a bit over my head in trying to determine how I could do this with content that's hosted externally and sitting on a subdomain. I have access to our Zendesk admin, so I can go in and edit stuff there, but don't have experience with javascript redirects and have read that they might not be great for such a large scale redirection. Hopefully this is enough context for someone to provide guidance on how you think I should go about fixing things (or if there's even anything for me to do) but please let me know if there's more info I can provide. Thanks!
Intermediate & Advanced SEO | | henrycabrown1 -
My "search visibility" went from 3% to 0% and I don't know why.
My search visibility on here went from 3.5% to 3.7% to 0% to 0.03% and now 0.05% in a matter of 1 month and I do not know why. I make changes every week to see if I can get higher on google results. I do well with one website which is for a medical office that has been open for years. This new one where the office has only been open a few months I am having trouble. We aren't getting calls like I am hoping we would. In fact the only one we did receive I believe is because we were closest to him in proximity on google maps. I am also having some trouble with the "Links" aspect of SEO. Everywhere I see to get linked it seems you have to pay. We are a medical office we aren't selling products so not many Blogs would want to talk about us. Any help that could assist me with getting a higher rank on google would be greatly appreciated. Also any help with getting the search visibility up would be great as well.
Intermediate & Advanced SEO | | benjaminleemd1 -
What's the best way to noindex pages but still keep backlinks equity?
Hello everyone, Maybe it is a stupid question, but I ask to the experts... What's the best way to noindex pages but still keep backlinks equity from those noindexed pages? For example, let's say I have many pages that look similar to a "main" page which I solely want to appear on Google, so I want to noindex all pages with the exception of that "main" page... but, what if I also want to transfer any possible link equity present on the noindexed pages to the main page? The only solution I have thought is to add a canonical tag pointing to the main page on those noindexed pages... but will that work or cause wreak havoc in some way?
Intermediate & Advanced SEO | | fablau3 -
Do Q&A 's work for SEO
If I create a good community in my particular field on my SEO site and have a quality Q&A section like this etc (ripping of MOZ's idea here sorry, I hope it's ok) will the long term returns be worth the effort of creating and man ageing this. Is the user created content of as much use as I think it will be?
Intermediate & Advanced SEO | | mark_baird0 -
After reading of Google's so called "over-optimization" penalty, is there a penalty for changing title tags too frequently?
In other words, does title tag change frequency hurt SEO ? After changing my title tags, I have noticed a steep decline in impressions, but an increase in CTR and rankings. I'd like to once again change the title tags to try and regain impressions. Is there any penalty for changing title tags too often? From SEO forums online, there seems to be a bit of confusion on this subject...
Intermediate & Advanced SEO | | Felix_LLC0 -
Pipe ("|") in my website's title is being replaced with ":" in Google results
Hi , One of the websites I'm promoting and working on is www.pau-brasil.co.il.
Intermediate & Advanced SEO | | Kadel
It's wordpress-based website and as you can see the html's Title is "PauBrasil | some hebrew slogan".
(Screenshot: http://i.imgur.com/2f80EEY.gif)
When I'm searching for "PauBrasil" (Which is the brand's name) , one of the results google shows is "PauBrasil: Some Hebrew Slogan" (Screenshot: http://i.imgur.com/eJxNHrO.gif ) Why does the pipe is being replaced with ":" ?
And not just that , as you can see there's a "blank space" missing between the the ":" to the slogan.
(note: the websites has been indexed by google crawler at least 4 times so I find it hard to believe it can be the reason) I've keep on looking and found out that there's another page in that website with the exact same title
but when I'm looking for it in google , it shows the title as it really is , with pipe. ("|").
(Screenshot: http://i.imgur.com/dtsbZV2.gif) Have you ever encountered something like that?
Can it be that the duplicated title cause that weird "replacement"? Thanks in advance,
Kadel0 -
Removing Dynamic "noindex" URL's from Index
6 months ago my clients site was overhauled and the user generated searches had an index tag on them. I switched that to noindex but didn't get it fast enough to avoid being 100's of pages indexed in Google. It's been months since switching to the noindex tag and the pages are still indexed. What would you recommend? Google crawls my site daily - but never the pages that I want removed from the index. I am trying to avoid submitting hundreds of these dynamic URL's to the removal tool in webmaster tools. Suggestions?
Intermediate & Advanced SEO | | BeTheBoss0