Энэ удаад та бүхэнд "login banner"-г танилцуулж байна.
Гадны хүн нэвтрэх хориотой газруудад "гадны хүн орохыг хориглоно!", "staff only!" гэсэн бичгүүдийг та бүхэн зөндөө л харсан байх. Энэ нь тухайн газрын дотоод ба гадаад хил хязгаарыг зааглан тогтоож өгч байгаагаас гадна энэ хил хязгаарыг зөвшөөрөлгүй давсан хүнд хариуцлага ноогдуулна гэдгийг маш товчхоноор хэлж өгч байгаа билээ. Хэрвээ ийм бичиг байхгүй байсан бол яах вэ? ... Мэдээж будилж яваа хүмүүс ч юмуу, эсвэл дэмий сониуч хүмүүс орох ёсгүй газарлуу ороод л явчихна гэсэн үг. Тэгхээр "login banner"-г системрүү нэвтэрч байгаа хил хязгаар бүрт тавьж өгөх нь ямар ач холбогдолтой болохыг та бүхэн ойлгосон байх.
Login banner гэхээр дүрэм журам, бүхэл бүтэн нүүр дүүрэн зүйл байх хэрэггүй. Гүйлгээд уншихад, гол нь "unauthorized use is prohibited...", "activities are reported..." гэсэн үгнүүд байхаар бичигдсэн байх хэрэгтэй. Энэ нь "зөвшөөрөлгүй системд нэвтрэхийг хориглоно,хийсэн зүйлүүдийг чинь хуулийн байгууллагад шилжүүлэх эрхтэй" гэсэн санааг агуулж байгаа юм. Би систем дээрээ жишээлбэл:
******************************************************
Authorized uses only!!!
All access to this system is monitored and reported!!!
******************************************************
гэсэн баннер тавьсан. Системрүүгээ орох болгондоо, энэ үгийг уншдаг. Тэгээд жижигхэн ч гэсэн хариуцлага мэдэрч, урдынхаасаа илүү нямбай ажиллах болсон. Харин гадны хэн нэгний хувьд ийм үгстэй тулгарвал хэсэгхэн зуур ч гэсэн тээнэгэлзэж эргэлзэх нь мэдээж...
Харин би анх энэ санаагаа MUG-н нийтэд зориулсан shell server-н login banner-с авсан. Энэ баннерийг бүгдээрээ одоо харцгаая:
#################################################
# Sign up for a free shell account from ...
# MICOM CO., LTD
#################################################
do not misuse the server for hacking purpose!
Credit to HBX and hairball :)
HBX ба hairball гэж хэн болохыг g0mb0 ах маань хэлж өгөх байх :). Харин энэ сервер дээр ажиллахдаа бусдын эрх ашгийг хүндэтгэхийг энэхүү баннер хэлж өгч байна даа...
login banner хэрхэн тавих вэ?
1. SSH-н хувьд sshd_config файл дотор
Banner /etc/ssh/ssh_banner
мөрийг нэмснээр "/etc/ssh/ssh_banner" гэсэн текст файл доторхийг хэрэглэгч login хийж орохын өмнө дэлгэцэн дээр хэвлэнэ... гэхдээ login prompt дээр username-г бичсэний дараа хэвлэнэ.
2. Unix төрлийн үйлдлийн системд хэрэглэгч логин хийж орсны дараах login banner-г тавиж болно. Үүний тулд "/etc/motd" файл доторхыг өөрчилнө, хэрэв ийм файл байхгүй бол үүсгэж өгнө. Мэдээж хэрэглэгч системд нэвтэрсний дараа гарах баннер учир "орохыг хориглоно" гэсэн үгс байхгүй нь мэдээж. Энд ихэвчлэн хэрэглэгчдэд хандсан сануулга, эсвэл компаний лого, системийн цаг... гэх мэтчилэн юу дуртайгаа оруулж болно.
Obscurity is not security, but... obscurity is a layer of security!
bi budilj yavj bgaad bayanaa-giin server ruu root erheer orchihvol yanaa :)) Nargia bailaa..
ReplyDeletedajgui niitlel bn.
Hi there, I found your web site via Google while looking
ReplyDeletefor a related topic,
your website came up, it looks great. I have bookmarked it in my google bookmarks.
My web page ... essentialweb.asia
My homepage ; Costa Blanca weather November
You are a very bright person!
ReplyDeleteHave a look at my blog post ... spanish coins database
Here is my site ... spain vs croatia tip
I really like what you guys are up too. This kind of clever
ReplyDeletework and reporting! Keep up the excellent works guys I've added you guys to blogroll.
Here is my weblog - alicante airport arrivals live
My weblog ... 2011 world series winner shirts
It is best to take part in a contest for among the finest blogs on
ReplyDeletethe web. I'll
suggest this website!
Take a look at my webpage: applebook.wall.fm
Take a look at my web page : Www.illegalpropertyspain.com
Awsome info and right to the point. I don't know if this is
ReplyDeletetruly the best place to ask but do you people have any ideea where
to employ some professional writers? Thank you :)
Feel free to surf to my homepage - http://cron.ktv.lt/pmcforum/profile.php?mode=viewprofile&u=30842&sid=b6ba2fc167711b2c7117cf63e136a244
Feel free to visit my blog post ... 10 day weather forecast tenerife sur reina
you're really a good webmaster. The site loading speed is amazing. It seems that
ReplyDeleteyou are doing any unique trick. Also, The contents are masterpiece. you've done a wonderful job
on this topic!
Have a look at my blog - topseobacklinks.com
My web page - sweet 16 photo album
What i do not realize is actually how you are
ReplyDeleteno longer really a lot more well-
preferred than you might be right now. You are so intelligent.
You
realize therefore considerably when it comes to this matter, produced me
personally imagine it from a lot
of various angles. Its like men and women are not
involved unless it’s something to do with Girl gaga!
Your individual stuffs excellent. Always deal with it up!
Here is my weblog: dlcomplete.blogspot.fr
Look into my web site - diysolarheatingspain.com
I was suggested this website by my cousin. I am not sure
ReplyDeletewhether this post is written
by him as no one else know such detailed about my problem.
You are amazing! Thanks!
My blog ... http://www.sevengenerationsahead.org
my site - abama resort spa tenerife
You can definitely see your expertise in the work you write.
ReplyDeleteThe world hopes for
even more passionate writers like you who aren't afraid to say how they believe. Always follow
your heart.
Here is my webpage :: http://laurieanderson.com/forum/profile.php?mode=viewprofile&u=62633&sid=bdb7f68172b7d9db46753ed1dc752d62
Feel free to visit my web blog spain jersey world cup
Hello there, just became aware of your blog through Google,
ReplyDeleteand found that it is truly
informative. I am gonna watch out for brussels.
I will appreciate if you continue
this in future. A lot of people will be benefited from
your writing. Cheers!
My blog :: blogspot.ru
Here is my site : spain expat forum for expats living in spain Benissa
You need to participate in a contest for one of the best blogs on the
ReplyDeleteweb. I will
recommend this web site!
Here is my website: Http://Www.Lomankam-Wingchun.Org.Tw
my web page - 10 interesting facts about madrid
F*ckin’ remarkable things here. I am very glad to see your article.
ReplyDeleteThanks a lot
and i'm looking forward to contact you. Will you kindly drop me a mail?
my blog post: linarichs.blogspot.com
Look into my site ; property Spain Murcia
You are a very bright individual!
ReplyDeleteHere is my page: essentialweb.asia
Feel free to surf my blog ; Murcia houses
Hey! I simply would like to give an
ReplyDeleteenormous thumbs up for the nice data you've right here on this post. I will probably be coming again to your weblog for extra soon.
Feel free to visit my web-site :: 2012 us open golf tournament
Also visit my page :: 2012 us open golf apparel
you're really a good webmaster. The site loading speed is amazing. It seems that
ReplyDeleteyou are doing any unique trick. In addition, The contents are
masterwork. you've done a wonderful job on this topic!
my web site ... www.seocome.com
My web site :: bull spain news Lorca
Excellent beat ! I wish to apprentice while you amend
ReplyDeleteyour
web site, how can i subscribe for a blog web site? The account aided me a
acceptable deal. I had been tiny bit acquainted of this your
broadcast provided bright clear
concept
Also visit my weblog :: huworks.blogspot.ru
Here is my site : homes for sale in Dolores
I'm extremely impressed with your writing skills as well as with the layout on your
ReplyDeleteweblog. Is this a paid theme or did you modify it yourself? Either way keep up the nice
quality writing, it’s rare to see a nice blog like this one nowadays..
Also visit my web site ... rahula.info
Visit my web-site ; car bumper protector
What i don't understood is actually how you're not actually much more well-liked than
ReplyDeleteyou may be right now. You are very intelligent.
You realize therefore
significantly relating to this subject, made me personally consider it from a
lot of varied angles. Its like women and men aren't fascinated unless it is one thing to
do with Lady gaga! Your own stuffs nice. Always maintain it up!
My blog post :: http://lgdato.blogspot.com/
Here is my site ... Ski
What i don't understood is actually how you are
ReplyDeleteno longer really a lot more well-favored than you might be right now. You're very intelligent.
You already know therefore significantly in terms of this topic, made me
personally imagine it from so many numerous angles.
Its like women and men are not
fascinated until it is something to do with Girl gaga! Your individual stuffs great.
Always deal with it up!
Look at my homepage: covenantpeoplesministry.org
Here is my weblog :: macedonia spain forum Santa Cruz de T
WONDERFUL Post.thanks for share..extra wait .. …
ReplyDeleteAlso visit my site http://duperray.famille.free.fr
My web page :: Alicante Spain house
Hi, Neat post. There's a problem with your site in internet explorer, would check
ReplyDeletethis… IE still is the market leader and a big portion of people will miss your wonderful writing because of this problem.
Feel free to surf to my homepage; blogspot.ru
my web page :: primera division spain news Benissa
Excellent post. I was checking constantly this blog and I am
ReplyDeleteimpressed! Very
helpful info particularly the last part :) I care for such info much.
I was seeking this certain info for a long
time. Thank you and good luck.
Also visit my blog post; http://topseobacklinks.com/search/http://flyingdog.pixnet.net/blog/post/24151258/
Review my blog post ; weather spain feb
Very nice post. I just stumbled upon your blog and wanted to say that I have
ReplyDeletetruly enjoyed surfing around your blog posts. After all I’ll be subscribing to
your
feed and I hope you write again soon!
Check out my web blog: isse.org.uk
Also see my website - Spanish forums
Very nice article and straight to the point. I don't know if this is
ReplyDeleteactually the best place to ask but do you people have any ideea where
to employ some professional writers? Thanks :)
Feel free to visit my web-site - oppa-ps.fs.cvut.cz
Here is my site Sky TV Costa Blanca Spain
Excellent read, I just passed this onto a colleague who was doing a little research on
ReplyDeletethat. And he
actually bought me lunch as I found it for him smile Thus let me rephrase that:
Thank you for lunch!
Here is my web-site http://topseobacklinks.com/
Check out my homepage ... medical repatriation insurance
you're really a good webmaster. The website loading speed is incredible. It seems that
ReplyDeleteyou are doing any unique trick. Furthermore, The contents are masterpiece. you've done a magnificent job on
this topic!
Have a look at my webpage :: ukinsulationgrants.com
My web site: windows server 2003 commands
Terrific post but I was
ReplyDeletewondering if you could write a litte more on this topic?
I'd be very grateful if you
could elaborate a little bit more. Kudos!
my web blog :: eazysong.blogspot.ru
Feel free to visit my weblog ... Alicante Spain
Excellent post. I was checking constantly this blog and I'm impressed! Extremely
ReplyDeletehelpful information specifically the last part :) I care for such
information much. I was looking for this particular information for a long time. Thank you and good luck.
Stop by my site : fairytailepisode.com
You really make it seem so easy with your presentation
ReplyDeletebut I find this matter to be actually
something which I think I would never understand. It seems too complex and extremely broad for
me. I am looking forward for your next post, I’ll try to get the
hang of it!
Feel free to visit my weblog ; http://bff4stardoll.blogspot.ru
I am typically to blogging and i actually appreciate your content.
ReplyDeleteThe article has really peaks my interest. I am going to bookmark your site
and maintain checking for new information.
Feel free to visit my homepage : thehippienerd.blogspot.fr
hey there and thank you for your info - I have definitely picked up
ReplyDeleteanything new from right here. I did however expertise
some technical issues using this website, since
I experienced to reload the website a lot of times previous
to I could get it to load correctly. I had been wondering if your web hosting is OK?
Not that
I am complaining, but slow loading instances times will very frequently affect your
placement in google and can damage your high-quality score if advertising and
marketing with Adwords. Anyway I am adding this RSS to my email and could look out for
much more of your respective interesting content. Make sure you update
this again soon..
Here is my website ... Koehorstintveld.nl
Thank you for the sensible critique. Me & my neighbor
ReplyDeletewere just preparing to do some research
about this. We got a grab a book from our local library but I
think I learned more clear from this post.
I'm very glad to see such great information being shared freely
out there.
Feel free to visit my homepage ... http://www.abnc.ca
Terrific work! This is the type of info that should be shared around the web.
ReplyDeleteShame on Google for not positioning this post higher! Come
on over and visit my
website . Thanks =)
My page: www.baby-community.com
Thanks for sharing valuable information.It will help everyone.keep Post.
ReplyDelete9xmovies Hindi movies Download site
Vidmate YouTube videos downloader
Thanks for sharing files .I found a lot of interesting information here. A really good post, very thankful and hopeful that you will write many more posts like this one.Great websites!
ReplyDeleteandroid app
apps apkzm
apkzm