I'm trying to insert multiple new lines of text into an iptables script using sed in a while loop. I'm not sure if this is the most effective way. Searching the forums has helped me come up with a good beginning but it's not 100%. I'd like it to search out a unique line in my current iptables file... (2 Replies)
Hello,
I was playing around with iptables to setup an isolated system. On a SLES10 system, I ran the below to setup my first draft of rules. I noticed that the rules come into effect immediately and do not require any restart of iptables.
iptables -A INPUT -j ACCEPT
iptables -A OUTPUT -m... (4 Replies)
Could someone help me with writing rules for iptables?
I need a dos attacks protection for a game server.
port type udp
ports 27015:27030
interface: eth0
Accept all packets from all IPs
Chek if IP sent more than 50 packets per second
Drop all packets from this IP for 5 minutes
I would be... (0 Replies)
Hi Gurus,
I need to add Multicast Port = xyz
Multicast Address = 123.134.143 ( example) to my firewall rules. Can you please guide me with the lines I need to update my iptables files with. (0 Replies)
Hi Champs
i am new in Iptables and trying to write rules for my Samba server.I took some help from internet, created one script and run from rc.local :
#Allow loopback
iptables -I INPUT -i lo -j ACCEPT
# Accept packets from Trusted network
iptables -A INPUT -s my-network/subnet -j... (0 Replies)
Hello,
I have iptables service running on my CentOS5 server. It has approx 50 rules right now.
The problem I am facing now is as follows -
I have to define a new chain in the filter table, say DOS_RULES & add all rules in this chain starting from index number 15 in the filter table.
... (1 Reply)
Hi,
I've been struggling with this all morning and seem to have a blind spot on what the problem is. I'm trying to use iptables to block traffic on a little cluster of raspberry pi's but to allow ssh and ping traffic within it.
The cluster has a firewall server with a wifi card connecting to... (4 Replies)
Hello,
I did 2 scripts. The second one is, I hope, more secure.
What do you think?
Basic connection (no server, no router, no DHCP and the Ipv6 is disabled)
#######script one
####################
iptables -F
iptables -X -t filter
iptables -P INPUT DROP
iptables -P FORWARD... (6 Replies)
Hi, I am relatively new to firewalls and netfilter. I have a Debian Stretch router box running dnsmasq, connected to a VPN. Occasionally dnsmasq polls all of the desired DNS servers to select the fastest. When it does this it responds to replies of the non-selected DNS servers with a icmp type... (0 Replies)
Discussion started by: CrazyDave
0 Replies
LEARN ABOUT MOJAVE
iptables-apply
IPTABLES-APPLY(8) iptables 1.6.1 IPTABLES-APPLY(8)NAME
iptables-apply - a safer way to update iptables remotely
SYNOPSIS
iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c [runcmd]}
DESCRIPTION
iptables-apply will try to apply a new rulesfile (as output by iptables-save, read by iptables-restore) or run a command to configure
iptables and then prompt the user whether the changes are okay. If the new iptables rules cut the existing connection, the user will not be
able to answer affirmatively. In this case, the script rolls back to the previous working iptables rules after the timeout expires.
Successfully applied rules can also be written to savefile and later used to roll back to this state. This can be used to implement a store
last good configuration mechanism when experimenting with an iptables setup script: iptables-apply -w /etc/network/iptables.up.rules -c
/etc/network/iptables.up.run
When called as ip6tables-apply, the script will use ip6tables-save/-restore and IPv6 default values instead. Default value for rulesfile is
'/etc/network/iptables.up.rules'.
OPTIONS -t seconds, --timeout seconds
Sets the timeout in seconds after which the script will roll back to the previous ruleset (default: 10).
-w savefile, --write savefile
Specify the savefile where successfully applied rules will be written to (default if empty string is given:
/etc/network/iptables.up.rules).
-c runcmd, --command runcmd
Run command runcmd to configure iptables instead of applying a rulesfile (default: /etc/network/iptables.up.run).
-h, --help
Display usage information.
-V, --version
Display version information.
SEE ALSO iptables-restore(8), iptables-save(8), iptables(8).
LEGALESE
Original iptables-apply - Copyright 2006 Martin F. Krafft <madduck@madduck.net>. Version 1.1 - Copyright 2010 GW <gw.2010@tnode.com or
http://gw.tnode.com/>.
This manual page was written by Martin F. Krafft <madduck@madduck.net> and extended by GW <gw.2010@tnode.com or http://gw.tnode.com/>.
Permission is granted to copy, distribute and/or modify this document under the terms of the Artistic License 2.0.
iptables 1.6.1 IPTABLES-APPLY(8)
01-06-2010
