linux - iptables, default policy vs rules - Server Fault Like: iptables -P INPUT DROP iptables -A INPUT --dport 80 -j ACCEPT vs iptables -A INPUT --dport 80 -j ACCEPT iptables -A INPUT -j DROP The reason why I care is because I can't create chain with log and assing it as default policy so I would need to use the second example
Iptables: Matching packets for bridged interface - Server Fault I'm building a firewall configuration tool based on iptables, and trying to get a "bump in the wire" scenario working Given a setup with eth0 and eth1 in a bridge br0 and a third interface eth2:
How to get all IPtables rules - Unix Linux Stack Exchange I'm trying to see a list of all the rules in IPtables in a Debian 7 server when I try: iptables -L -n I only get one rule (which I entered 5 minutes ago) I have many others, for port 80, mysql
Enable iptables on one interface - Server Fault I want iptables to filter only one interface, eth0, which is facing WAN How can this be done? And I want to keep ftp and ssh ports open on eth0
nat - iptables: How to combine DNAT and SNAT to use a secondary IP . . . iptables -t nat -A PREROUTING -d 192 168 0 40 -p udp --dport 7100 -j DNAT --to-destination 192 168 0 20 I also wish all outbound traffic from this service to appear to come from the shared IP, so that return responses will work in the event of a active-standby failover
linux - iptables to allow only ssh and https - Server Fault I'm trying to configure the iptables on my device in order to allow only SSH and HTTPS traffic In particular, the HTTPS protocol is used to call some REST API toward a remote server from a java client
ubuntu - Module ip_tables not found after upgrade - Server Fault And sudo iptables -L returns the IP-Table like expected (Docker works also again)… Setting the update alternative for iptables to legacy, will just result in a different error: $ sudo update-alternatives --set iptables usr sbin iptables-legacy $ sudo iptables -L modprobe: FATAL: Module ip_tables not found in directory lib modules 5 15 0-41