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Mantykora 7's questions

Martin Hope
Mantykora 7
Asked: 2021-01-08 02:32:48 +0800 CST
  • 1

SOLUÇÃO

##Para parar o ataque DOS do host remoto.

[http-get-dos] 
enabled = true 
port = http,https 
filter = http-get-dos 
logpath = /var/log/apache*/access.log 
maxretry = 400 
findtime = 400 
bantime = 200 
ignoreip = 127.0.0.1
action = iptables[name=HTTP, port=http, protocol=tcp]

SO: Ubuntu Server 20.10

Servidor HTTP: Apache

Quando eu adiciono a regra (para parar o ataque do DOS do host remoto) ao jail.conf, o fail2ban para de funcionar. Eu consegui essa configuração em alguns tutoriais, mas eles eram Ubuntu 16 e 18.

enabled = true 
port = http,https 
filter = http-get-dos 
logpath = /var/log/apache*/access.log 
maxretry = 400 
findtime = 400 
bantime = 200 
ignoreip = 127.0.0.1
action = iptables[name=HTTP, port=http, protocol=tcp]

/etc/fail2ban/filter.d

http-get-dos.conf

# Fail2Ban configuration file 
[Definition]
failregex = ^<HOST> -.*"(GET|POST).* 
ignoreregex =

sudo systemctl status fail2ban

● fail2ban.service - Fail2Ban Service
     Loaded: loaded (/lib/systemd/system/fail2ban.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Thu 2021-01-07 09:05:29 UTC; 1h 23min ago
       Docs: man:fail2ban(1)
    Process: 82878 ExecStartPre=/bin/mkdir -p /run/fail2ban (code=exited, status=0/SUCCESS)
    Process: 82879 ExecStart=/usr/bin/fail2ban-server -xf start (code=exited, status=255/EXCEPTION)
   Main PID: 82879 (code=exited, status=255/EXCEPTION)

Jan 07 09:05:29 urial systemd[1]: Starting Fail2Ban Service...
Jan 07 09:05:29 urial systemd[1]: Started Fail2Ban Service.
Jan 07 09:05:29 urial fail2ban-server[82879]: 2021-01-07 09:05:29,370 fail2ban                [82879]: ERROR   Failed during configuration: While reading from '/etc/fail2ban/jail.local' [l>
Jan 07 09:05:29 urial fail2ban-server[82879]: 2021-01-07 09:05:29,372 fail2ban                [82879]: ERROR   Async configuration of server failed
Jan 07 09:05:29 urial systemd[1]: fail2ban.service: Main process exited, code=exited, status=255/EXCEPTION
Jan 07 09:05:29 urial systemd[1]: fail2ban.service: Failed with result 'exit-code'.

/etc/fail2ban$ cat jail.local

wlodek@urial:/etc/fail2ban$ cat jail.local
 ##To block failed login attempts use the below jail. 
[sshd]
enable = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretray = 3
findtime = 300
bandtime = 86400
ignoreip = 127.0.0.1  

##To block failed login attempts use the below jail. 
[apache] 
enabled = true 
port = http,https 
filter = apache-auth 
logpath = /var/log/apache2/*error.log 
maxretry = 3 
bantime = 600 
ignoreip = 127.0.0.1
 
##To block the remote host that is trying to request suspicious URLs, use the below jail. 
[apache-overflows] 
enabled = true 
port = http,https 
filter = apache-overflows 
logpath = /var/log/apache2/*error.log 
maxretry = 3 
bantime = 600 
ignoreip = 127.0.0.1
 
##To block the remote host that is trying to search for scripts on the website to execute, use the below jail. 
[apache-noscript] 
enabled = true 
port = http,https 
filter = apache-noscript 
logpath = /var/log/apache2/*error.log 
maxretry = 3 
bantime = 600 
ignoreip = 127.0.0.1
 
##To block the remote host that is trying to request malicious bot, use below jail. 
[apache-badbots] 
enabled = true 
port = http,https 
filter = apache-badbots 
logpath = /var/log/apache2/*error.log 
maxretry = 3 
bantime = 600 
ignoreip = 127.0.0.1
 
##To stop DOS attack from remote host. [http-get-dos] 
enabled = true 
port = http,https 
filter = http-get-dos 
logpath = /var/log/apache*/access.log 
maxretry = 400 
findtime = 400 
bantime = 200 
ignoreip = 127.0.0.1
action = iptables[name=HTTP, port=http, protocol=tcp]
fail2ban
Martin Hope
Mantykora 7
Asked: 2017-04-01 02:46:49 +0800 CST
  • 1

Não sei fazer roteamento entre Lan#1 192.168.1.0 e Lan#2 192.168.10.0. Tentei com roteamento estático set protocols static route 0.0.0.0/0 next-hop 192.168.10.0 distance '1', mas não entendi.

1. Interfaces

run show interfaces ethernet 
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface        IP Address                        S/L  Description
---------        ----------                        ---  -----------
eth0             192.168.1.222/24                  u/u  OUTSIDE 
eth1             192.168.10.1/24                   u/u  INSIDE

2. Portal

gateway-address 192.168.1.1

3. NAT

Posso fazer o próximo NAT, então há roteamento e internet, mas isso (2 x NAT na rede) está incorreto

edit nat source r 1
set outbound-interfeace eth0
set source address 192.168.10.0/24
set translation address masquerade

insira a descrição da imagem aqui

vyos
Martin Hope
Mantykora 7
Asked: 2016-01-13 00:10:30 +0800 CST
  • 0

Posso montar a unidade de compartilhamento do Windows da seguinte maneira:

mount.cifs //192.168.1.151/_wymiana /mnt/share_2 -o user=wega,password=1234

mas não consigo desta forma:

mount.cifs //192.168.1.151/_wymiana /mnt/share_2 -o credentials=/root/.smbcredential_2

cat .smbcredential_2
username=wega   
password=1234

Depurando com strace

strace -f -e trace=mount mount -t cifs //192.168.1.151/_wymiana /mnt/share_2 -o credentials=/root/.smbcredential_2
Process 3338 attached
Process 3339 attached
[pid  3339] +++ exited with 0 +++
[pid  3338] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3339, si_status=0, si_utime=0, si_stime=0} ---
[pid  3338] mount("//192.168.1.151/_wymiana", ".", "cifs", 0, "ip=192.168.1.151,unc=\\\\192.168.1"...) = -1 EACCES (Permission denied)
mount error(13): Permission denied
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
[pid  3338] +++ exited with 32 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3338, si_status=32, si_utime=0, si_stime=0} ---
+++ exited with 32 +++

Agradeço antecipadamente por sua ajuda

mount