Tema: Re: kaip kovojat su isilauzeliais
Autorius: Didzkis
Data: 2014-09-29 23:15:03
sory nieko asmeniško, bet man kai nelabai susigaudančiam tuose visuose scriptuose
tai labai baisu leist bile ką, ypač kai rašo kad reikia :)

čia maždaug kaip kažkada klajojo eilutė su kodu kur pagamindavo "rm -rf /"





On 2014.09.29 07:21, Vidas Makauskas wrote:
> 2013-11-18 15:00, Rrr rašė:
>> Dropini viska, atidarai tik reikiamus portus [iptables]. Prie SSH ir kitu svarbiu portu leidi tik
>> tam tikrus ip, pvz darbo, namu, savo 3g mobileko interneto subnet'us [iptables]. SSH isjjungi
>> prisijungima rootui ir is viso neleidi jungtis su passwordu, leidi tik paprastiem useriam ir tik
>> savo su cert'u (ant cert turi buti uzdetas pass), kuri pvz nesiojiesi flashiuke [sshd]. Kaip jau
>> kazkas minejo, naudoji fail2ban (principas - pats nurodai kiek leidi prisijungimu per tam tikra
>> laiko tarpa i tam tikra porta/servisa, pvz 3 prisijungimai per 1 min., ant 4 blokuojamas konkretus
>> IP nustatytam laikui ir kiti panasus navarotai).
>>
>>
>>
>>
>> "Drambliukas" <nera@nera.lt> wrote in message news:l5beek$c0r$1@trimpas.omnitel.net...
>>> Sveiki, Fedora (Leonidas), routeris, mailserveris, adresas statinis,
>>>
>>> Pasipyle loguose IP adresai, kurie bando arba skanuoti root, ssh
>>> slaptazodzius arba listi i info@epasta dezute, kuria ismetus fiziskai - vis
>>> viena bando skanuot.
>>> Kokie aplamai veiksmai tokiu atveju. Kaip kol kas bandau sukovot irasydamas
>>> tuos IP adresus i /etc/hosts.deny faila. Bet panasu, kad kova su vejo
>>> malunais nes anie pasikeicia IP adresa ir net is kito zemyno.
>>> Butu malonu suzinot kaip kovoti
>>>
>>>
> To all Linux users, be aware of the newly uncovered critical vulnerability named Shellshock
> (CVE-2014-6271 and CVE-2014-7169). This really is in the same league with recent Heartbleed
> vulnerability, and some people are considering it even a bigger deal. In short, the vulnerability
> allows attacker to execute arbitrary code on any web server with bash installed (which makes it
> 99.9% Linux-based web servers, pretty much). What is really scary is that this bug existed in all
> bash versions, including one from 25 years ago. So patch immediately because hackers are already
> using it. Here is a command to help you confirm if a system is vulnerable against the Shellshock
> vulnerability. If this outputs a line containing only the word "vulnerable", then you are using a
> vulnerable version of Bash.
> $ env 'x=() { :;}; echo vulnerable' 'BASH_FUNC_x()=() { :;}; echo vulnerable' bash -c "echo test"