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Operating Systems Linux How to block only one IP using iptables? Post 302958377 by prvnrk on Wednesday 21st of October 2015 02:47:12 PM
Old 10-21-2015
your 3rd,4th & 5th lines are culprits. Try this:

Code:
# Default IPtables config
*filter

-A INPUT --src 172.1.1.1 -j REJECT
-A OUTPUT --dst 172.1.1.1 -j REJECT

-A INPUT -j ACCEPT
-A OUTPUT -j ACCEPT

COMMIT

This User Gave Thanks to prvnrk For This Post:
 

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iptables-apply(8)					      System Manager's Manual						 iptables-apply(8)

NAME
iptables-apply - a safer way to update iptables remotely SYNOPSIS
iptables-apply [-hV] [-t timeout] ruleset-file DESCRIPTION
iptables-apply will try to apply a new ruleset (as output by iptables-save/read by iptables-restore) to iptables, then prompt the user whether the changes are okay. If the new ruleset cut the existing connection, the user will not be able to answer affirmatively. In this case, the script rolls back to the previous ruleset after the timeout expired. The timeout can be set with -t. When called as ip6tables-apply, the script will use ip6tables-save/-restore instead. OPTIONS
-t seconds, --timeout seconds Sets the timeout after which the script will roll back to the previous ruleset. -h, --help Display usage information. -V, --version Display version information. SEE ALSO
iptables-restore(8), iptables-save(8), iptables(8). LEGALESE
iptables-apply is copyright by Martin F. Krafft. This manual page was written by Martin F. Krafft <madduck@madduck.net> Permission is granted to copy, distribute and/or modify this document under the terms of the Artistic License 2.0. 2006-06-04 iptables-apply(8)
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