Yes, you always need 2 different rules. However, you can create a new chain (eg log-and-drop) that contains those 2 rules, and have your regular chains jump there if needed.
Code:
iptables -N log-and-drop # create new chain
iptables -A log-and-drop -j LOG --log-prefix 'SWAMP-THING'--log-level 4
iptables -A log-and-drop -J DROP
iptables -A INPUT -s 10.1.1.115 -j log-and-drop
You might also want to limit the number of log messages by using the (aptly named) limit module (described here), lest someone DoS' your server by filling the log file.
Hi,
I need to redirect internal internet requests to a auth client site siting on the gateway. Currently users that are authenticated to access the internet have there mac address listed in the FORWARD chain. All other users need to be redirected to a internal site for authentication.
Can... (1 Reply)
Hello,
I am currently trying to limit incoming UDP length 20 packets on a per IP basis to 5 a second using IPTables on a Linux machine (CentOS 5.2).
Basically, if an IP is sending more than 5 length 20 UDP packet a second to the local machine, I would like the machine to drop the excess... (1 Reply)
Hello, excuse my English. Please could tell me how I can pass this syntax for iptables to ipfw.
iptables -A OUTPUT -p tcp --dport 80 -m state --state NEW -m recent
--set --name thor --rdest -j ACCEPT
iptables -A INPUT -p tcp -m tcp --tcp-flag RST RST -m state --state
ESTABLISHED -m recent... (0 Replies)
I would like to copy data flow (not redirect!!!) from 1567 port
to another 1194 port on same computer. The 1567 Port already binded by Scream program (it is bisy). Is it possible to do it by iptables or for it nesessary another programs? Can you help me in the decision of this question? (1 Reply)
Hi,
Can someone help to explain what is --to-source in
the iptables rule below:
iptables -t nat -A POSTROUTING -s 192.168.1.100 -o eth0 \
-j SNAT --to-source 97.158.253.26
especially why the option has double dash (--)
is it a comment?
Thanks (1 Reply)
I am looking for an iptables command to allow incoming UDP packets for my Linux server
also is there a command I can use to set the default action for outgoing packets to accept?
Thank you (1 Reply)
I want to SSH to 192.168.1.15 Server from my machine, my ip was 192.168.1.99
Source Destination was UP, with IP 192.168.1.15.
This is LAN Network there are 30 Machine's Connected to the network and working fine, I'm Playing around the local machine's because I need to apply the same rules in... (2 Replies)
Discussion started by: babinlonston
2 Replies
LEARN ABOUT CENTOS
iptables-xml
IPTABLES-XML(1) iptables 1.4.21 IPTABLES-XML(1)NAME
iptables-xml -- Convert iptables-save format to XML
SYNOPSIS
iptables-xml [-c] [-v]
DESCRIPTION
iptables-xml is used to convert the output of iptables-save into an easily manipulatable XML format to STDOUT. Use I/O-redirection pro-
vided by your shell to write to a file.
-c, --combine
combine consecutive rules with the same matches but different targets. iptables does not currently support more than one target per
match, so this simulates that by collecting the targets from consecutive iptables rules into one action tag, but only when the rule
matches are identical. Terminating actions like RETURN, DROP, ACCEPT and QUEUE are not combined with subsequent targets.
-v, --verbose
Output xml comments containing the iptables line from which the XML is derived
iptables-xml does a mechanistic conversion to a very expressive xml format; the only semantic considerations are for -g and -j targets in
order to discriminate between <call> <goto> and <nane-of-target> as it helps xml processing scripts if they can tell the difference between
a target like SNAT and another chain.
Some sample output is:
<iptables-rules>
<table name="mangle">
<chain name="PREROUTING" policy="ACCEPT" packet-count="63436" byte-count="7137573">
<rule>
<conditions>
<match>
<p>tcp</p>
</match>
<tcp>
<sport>8443</sport>
</tcp>
</conditions>
<actions>
<call>
<check_ip/>
</call>
<ACCEPT/>
</actions>
</rule>
</chain>
</table> </iptables-rules>
Conversion from XML to iptables-save format may be done using the iptables.xslt script and xsltproc, or a custom program using libxsltproc
or similar; in this fashion:
xsltproc iptables.xslt my-iptables.xml | iptables-restore
BUGS
None known as of iptables-1.3.7 release
AUTHOR
Sam Liddicott <azez@ufomechanic.net>
SEE ALSO iptables-save(8), iptables-restore(8), iptables(8)iptables 1.4.21 IPTABLES-XML(1)