Exemplo de shell script para verificar a conexão com multiplos IPs e Urls. Ótimo para troubleshooting de travas de firewall. (v1)

verifica_conexoes.sh

#!/bin/bash

#COLORS
RED='\033[0;31m'
LRED='\033[1;31m'
GREEN='\033[0;32m'
LGREEN='\033[1;32m'
ORANGE='\033[0;33m'
YELLOW='\033[1;33m'
LBLUE='\033[1;34m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color
#CONFIGS
Timeout="2"
NetCatParam="-z" #-zv -> Verboso ; -z -> Nao Verboso
MongoDefaultPort="27017"
SqlDefaultPort="1433"
ADDRESSES_HTTP=("google.com" "youtube.com" "localhost.com")
ADDRESSES_NGINX=("mynginx.com")
ADDRESSES_SMTP=("mysmtp.com" "mysmtp2.com")
ADDRESSES_ACE=("127.0.0.1" "barramentoibm.com")
ADDRESSES_SQL=("127.0.0.1")
ADDRESSES_MONGO=("127.0.0.1")
######################################
echo -e "${LGREEN}SERVIDOR DE ALGUMA COISA: ${RED}AMBIENTE DE PRODUCAO${NC}"
echo ""
echo "As tentativas de conexoes sao feitas dentro de $Timeout segundos de timeout"
echo "O proposito do batch e auxiliar no troubleshooting referente a firewall"
echo -e "${YELLOW}atencao:${NC} no caso de IPs nao listados ou timeouts maiores, podem ocorrer falsos positivos."
######################################
#App Connect. Barramento da IBM por exemplo, pode ser qualquer tipo de aplicacao especifica que utiliza outras portas
######################################
echo "*********************************************"
echo ""
echo -e "${YELLOW}IBM App Connect${NC} conexao direta com o Integration Server:"
echo ""
# echo -e "${GREEN}DEV${NC}"
for ADDR in ${ADDRESSES_ACE[@]}
do
   echo -n "Port 7601 admin |"
   echo -n "$ADDR |"
   nc ${NetCatParam} "$ADDR" 7601 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
   echo -n "Port 7801 http  |"
   echo -n "$ADDR |"
   nc ${NetCatParam} "$ADDR" 7801 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t

echo "*********************************************"
echo ""
######################################
#SQL
######################################
echo -e "${YELLOW}SQL${NC} Connections"
echo ""
for ADDR in ${ADDRESSES_SQL[@]}
do
   echo -n "Port $SqlDefaultPort |"
   echo -n "$ADDR |"
   nc ${NetCatParam} "$ADDR" "$SqlDefaultPort" -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t
echo "*********************************************"
echo ""
######################################
#MONGO DB
######################################
echo -e "${YELLOW}MONGO DB${NC} Connections"
echo ""
for ADDR in ${ADDRESSES_MONGO[@]}
do
   echo -n "Port "$MongoDefaultPort" |"
   echo -n "$ADDR |"
   nc ${NetCatParam} "$ADDR" "$MongoDefaultPort" -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t
echo "*********************************************"
echo ""
######################################
#SMTP
######################################
echo -e "${YELLOW}SMTP${NC} Connections"
echo ""
for ADDR in ${ADDRESSES_SMTP[@]}
do
   echo -n "Port 25 |"
   echo -n "$ADDR |"
   nc ${NetCatParam} "$ADDR" 25 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t
echo "*********************************************"

######################################
#HTTP & HTTPS 
######################################
echo -e "${YELLOW}HTTP & HTTPS${NC} Connections"
echo ""

for ADDR in ${ADDRESSES_HTTP[@]}
do
   echo -n "http  | "
   echo -n "$ADDR | "
   nc ${NetCatParam} "$ADDR" 80 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi

   nc ${NetCatParam} "$ADDR" 443 -w "${Timeout}"
   echo -n "https | "
   echo -n "$ADDR | "
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t

echo "*********************************************"
echo ""
######################################
#NGINX
######################################
echo -e "${YELLOW}NGINX${NC} Connections - ip direto"
echo ""

for ADDR in ${ADDRESSES_NGINX[@]}
do 
   echo -n "http  | "
   echo -n "$ADDR | "
   nc ${NetCatParam} "$ADDR" 80 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi

   echo -n "https | "
   echo -n "$ADDR | "
   nc ${NetCatParam} "$ADDR" 443 -w "${Timeout}"
   if [ $? -eq 0 ]; then
      echo -e "${GREEN}OK${NC}"
   else
      echo -e "${RED}FAIL${NC}"
   fi
done | column -t

echo "*********************************************"
echo ""