Feb 15, 2017 · Try `iptables -h' or 'iptables --help' for more information. feb 15 09:34:10 CentOS7 firewalld[10535]: 2017-02-15 09:34:10 ERROR: COMMAND_FAILED: '/sbin/iptables -w2 -t filter -I INPUT_direct 1 -p tcp -m multiport --dports http,https -m set --match-set fail2ban-apache-overflows src -j REJECT --reject-with icmp-port-unreachable' failed: iptables

iptables-restart — Used exclusively to restart IPtables and test for failed FQDNs; iptables -nL — Check the current status of your IPtables firewall On CentOS platforms, IPtables can be manually configured (if you know what you’re doing) by editing iptables and ip6tables in /etc/sysconfig. On the Raspberry Pi, the rules are stored in /etc firewalld: WARNING: '/usr/sbin/iptables-restore -n' failed: firewalld: WARNING: '/usr/sbin/ip6tables-restore -n' failed: firewalld: ERROR: COMMAND_FAILED. kernel: nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. /sbin/iptables -t mangle -A PREROUTING -p tcp -m conntrack --ctstate NEW -m tcpmss ! --mss 536:65535 -j DROP ### 4: Block packets with bogus TCP flags ### /sbin/iptables -t mangle -A PREROUTING -p tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP Oct 01, 2018 · /sbin/iptables-restore < /root/iptables-works-2018-09-11 Tip #3: Every time you create a backup copy of the iptables policy, create a link to the file with 'latest' in the name. ln –s /root/iptables-works-`date +%F` /root/iptables-works-latest Tip #4: Put specific rules at the top of the policy and generic rules at the bottom. May 30, 2002 · The /usr/local/sbin/iptables -t nat -A POSTROUTING -o eth0 -s 172.16.1.0/24 –d 204.202.132.19 -j MASQUERADE command is an example of a NAT rule that will allow a connection only to www.abcnews / usr / sbin / tc filter add dev em2 parent ffff: protocol all prio 10 u32 match u32 0 0 flowid 1: 1 action mirred egress redirect dev ifb4em2 cmd_wrapper: tc: SUCCESS: / usr / sbin / tc filter add dev em2 parent ffff: protocol all prio 10 u32 match u32 0 0 flowid 1 : 1 action mirred egress redirect dev ifb4em2

Finally happened again. There was no message. The file is empty, after having changed the command to /sbin/iptables-restore < /etc/iptables.up.rules > /var/log/iptables-output. – Sam Bull Oct 2 '18 at 13:10

Dec 29, 2005 · iptables v1.2.9: Unknown arg `/sbin/iptables' Try `iptables -h' or 'iptables --help' I have checked, there is the /sbin/iptables in there. Yesterday it worked perfectly, I didn't change anything on my computer, but today it can no longer work. I tired with different scripts, but still don't work. Hi Maintainer, Well, the iptables package updated quick, and now supplies a /sbin/iptables, but docker still won't start with -p port:port: iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport *** -j DNAT --to-destination ***:*** ! -i docker0: iptables v1.8.1 (nf_tables): Chain 'DNAT' does not exist -- Jason Jul 11, 2020 · /sbin/iptables -A INPUT -p tcp -i eth1 -s ! 1.2.3.4 --dport 80 -j DROP. Conclusion. You can block and unblock ports in IPTABLES using the ACCEPT and DROP parameters. Also, we mentioned some examples of other scenarios of this firewall. I hope you have enjoyed this post and found it useful.

First of all you should try #chkconfig --add /sbin/iptables this will recognize the "iptables". then you should create a script for your iptables configuration and then make that scrip to start on boot. create a script:

Hi, After some tinkering around with nftables/iptables i ended up having to reinstall the now missing symlinks for update-alternatives. The manpage is confusing to say the least. The syntax is apparently update-alternatives But having tried a couple of ways i just end up with different Dec 29, 2005 · iptables v1.2.9: Unknown arg `/sbin/iptables' Try `iptables -h' or 'iptables --help' I have checked, there is the /sbin/iptables in there. Yesterday it worked perfectly, I didn't change anything on my computer, but today it can no longer work. I tired with different scripts, but still don't work. Hi Maintainer, Well, the iptables package updated quick, and now supplies a /sbin/iptables, but docker still won't start with -p port:port: iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport *** -j DNAT --to-destination ***:*** ! -i docker0: iptables v1.8.1 (nf_tables): Chain 'DNAT' does not exist -- Jason