Parallel Bash Network and Port Scanner

ping_network.sh

#!/usr/bin/env bash

network="10.10.10" # Your target network should be in the form of "X.X.X", while it will scan X.X.X.1 to X.X.X.254
threads=100 # Number of parallel threads
ping_count=1 # Number of ping attempts
ping_timeout=1 # In seconds
nc_timeout=1 # In seconds
ports=(22 80 443 8080 8384) # The ports to check

# Colors
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

export network ping_count ping_timeout nc_timeout ports GREEN RED YELLOW NC

seq 1 255 \
    | xargs -P"$threads" -I{} bash -c '
        ip="$network.{}"
        # 1) Ping check
        if ping -c "$ping_count" -W "$ping_timeout" "$ip" &>/dev/null; then
            open_list=""
            # 2) Port checks using nc (netcat)
            for p in "$@"; do
                if nc -zv -w "$nc_timeout" "$ip" "$p" &>/dev/null; then
                    open_list+="$p "
                fi
            done

            # 3) Print the result in one go
            if [ -n "$open_list" ]; then
                echo -e "${GREEN}$ip${NC} ... ${YELLOW}${open_list% }${NC}"
            else
                echo -e "${GREEN}$ip${NC} ... ${RED}none${NC}"
            fi
        fi
    ' _ {} "${ports[@]}"