Power Shell para revisar rango de IP

Power Shell para revisar rango de IP

 for ($i = 1; $i -lt 255; $i++) {

    Test-Connection "192.168.100.$i" -Count 1 -ErrorAction SilentlyContinue

}

Jenkins no se inicia de manera automatica

Error:

Service cannot be started. System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified

   at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)

   at winsw.Util.ProcessHelper.StartProcessAndCallbackForExit(Process processToStart, String executable, String arguments, Dictionary`2 envVars, String workingDirectory, Nullable`1 priority, ProcessCompletionCallback callback, Boolean redirectStdin, LogHandler logHandler, Boolean hideWindow)

   at winsw.WrapperService.StartProcess(Process processToStart, String arguments, String executable, LogHandler logHandler, Boolean redirectStdin)

   at winsw.WrapperService.OnStart(String[] args)

   at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state) 

https://serverfault.com/questions/1039864/jenkins-fails-to-start-on-windows-server-after-java-runtime-update-uninstalled-o

D:\Services\Jenkins\jenkins.xml

el error lo da el ejecutable 

<executable>C:\Program Files (x86)\Java\jre1.8.0_341\\bin\java.exe</executable>

el motivo es que se actualizo la version de java y esto no es detectado por jenkins.

Sitios utiles

Sitios utiles

https://haveibeenpwned.com/ - para ver tu correo personal o corporativo

https://cybernews.com/password-leak-check/ - para ver si las claves mas usadas que tienes han sido filtradas.

Comandos de red utiles

 

sudo arp-scan --localnet                 para saber que hay en la red

sudo netdiscover -r 192.168.1.0/24 para saber que hay en la red

Enum4linux                 conocer usuarios de la red

nmblookup -A IP         para saber nombre de la maquina

NMAP                  scan de puertos

nmap -sS 192.168.0.1 validacion de servicios TCP

nmap -sT 192.168.0.1 validacion de servicios UDP

nmap -sV 192.168.0.1 validacion de version del servicio

nmap -sC -A -p23,80,443,5000 192.168.0.1 revision de puertos especificos

nmap 192.168.0.5,233,252 o rangos: nmap 192.168.0.200-254 para scan de rangos de IP

configurar timezone linux ubuntu - set TimeZone

#configurar timezone linux ubuntu  - set TimeZone

sudo timedatectl set-timezone America/Santiago

Audit a las autenticaciones

con estos comandos podemos visualizar que usuarios han intentado ingresar a la maquina

#funciona hast debian buster

cat /var/log/auth* | grep Failed

cat /var/log/auth* | grep Accepted

audit.sh

Para bookworm Debian 12

#https://serverfault.com/questions/1148725/where-is-some-os-logs-in-debian-12

journalctl --since "1 hour ago" | grep Accepted*

journalctl --since "1 hour ago" | grep Failed*

Ejemplo:  sshd[178606]: Accepted password for pi from 192.168.1.105 port 58964 ssh2

correo plano python - Sending Emails in Python With SMTP

 https://code.tutsplus.com/tutorials/sending-emails-in-python-with-smtp--cms-29975

# import necessary packages

  

from email.mime.multipart import MIMEMultipart

from email.mime.text import MIMEText

import smtplib

  

# create message object instance

msg = MIMEMultipart()

  

  

message = "Thank you"

  

# setup the parameters of the message

password = "your_password"

msg['From'] = "your_address"

msg['To'] = "to_address"

msg['Subject'] = "Subscription"

  

# add in the message body

msg.attach(MIMEText(message, 'plain'))

  

#create server

server = smtplib.SMTP('smtp.gmail.com: 587')

  

server.starttls()

  

# Login Credentials for sending the mail

server.login(msg['From'], password)

  

  

# send the message via the server.

server.sendmail(msg['From'], msg['To'], msg.as_string())

  

server.quit()

  

print("successfully sent email to %s:" % (msg['To']))