sudo iptables –A INPUT –i eth0 –j ACCEPT I need a practical prove that this interface accept all kind of packets. Does anyone know a specific way or tool which can help me. I can't find anything better than . nmap -p 80 or. nmap - sU

iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT. You can verify modified set of rules by seeing /etc/sysconfig/iptables file (as shown in Figure 10). Figure 6: Stopping and starting iptables Figure 7: /etc/sysconfig/iptables Figure 8: Restarting iptables Figure 9: Appending a rule Figure 10: /etc/sysconfig/iptables after adding a rule sudo iptables -t nat -A POSTROUTING --out-interface eth1 -j MASQUERADE sudo iptables -A FORWARD --in-interface eth0 -j ACCEPT All of the forwarded traffic will traverse the FORWARD chain. To filter packets you'll now have to create rules on that chain specifying which interface is incoming/outgoing instead of using the INPUT/OUTPUT chains. Allow MySQL connections to eth0 network interface Here’s the syntax for iptables and nftables: [email protected] :~$ iptables-translate -A INPUT -i eth0 -p tcp --dport 3306 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT nft add rule ip filter INPUT iifname eth0 tcp dport 3306 ct state new,established counter accept iptables -A FORWARD -i eth0 -p tcp --dport 80 -d -j ACCEPT This rule allows forwarding of incoming HTTP requests from the firewall to its intended destination of the Apache HTTP Server server behind the firewall. iptables -A INPUT -s -i eth0 -j DROP Or an specific port. iptables -A INPUT -s -p tcp -dport 22 -j DROP Using a Network and not only one IP. iptables -A INPUT -s -j DROP Block traffic from a specific MAC address. Suppose you want to bloc traffic some a MAC address instead of an IP address. # iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT. 4. List iptables to verify newly added rule. # iptables -L Chain INPUT (policy ACCEPT) target prot opt source

Jul 14, 2020 · Setup IP address for eth0,and add gateway sudo ifconfig eth0 netmask sudo route add default gw moinahmed001 commented on Sep 28, 2016 On top you have stated: Forward traffic from wlan0 to eth0 interface