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1. Cybersecurity
Hello,
on a PC with Debian 8 I try to use a Bash script with Netfilter rules so that only traffic goes in and out that is wanted. For that I set all 3 default policies to "drop". The machine uses DHCP to get its IP, gateway and DNS. And I never checked so I was quite surprised that my... (1 Reply)
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2. Cybersecurity
Hi all,
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3. Linux
Hello,
Everyone knows that with PF_PACKET sockets one can "sniff" a determinated frame from the network device, but just that, see the frame without altering its action on the receiving host. What i want is to "intercept" the incoming frame and pass it through some rules, and if it doesn't pass... (9 Replies)
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4. UNIX for Advanced & Expert Users
iam trying to built a firewall.so i have used netfilter for it.
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(using print_string iam printing strings on current terminal (terminal we ping))
... (1 Reply)
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5. Linux
HI,
Is the Netfilter and IPtables same?
Thanks & Regards
Arun (1 Reply)
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6. Cybersecurity
Hi everyone, I would like to allow multi users to access P2P networks, so I wonder if there's a way to tracking these kind of protocols with netfilter, and also compatibility with nat, like the module conntrack_ftp seems to do with the FTP protocol.
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7. IP Networking
hi,
i'm using tcpreplay to send a traffic trace to my wireless interface (the trace is been captured by the same interface). It seems as netfilter can't trace connections. Is it possible? (0 Replies)
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8. Programming
Hello friends i'm trying to extend iptables to include a target by which we can change the packet type field of a packet.
For this i created a kernel module and a userspace extension.
Now i face the problem that when i try to invoke iptable with the target i created i get an error message saying... (1 Reply)
Discussion started by: Rakesh Ranjan
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9. Programming
Friends I'm facing a big problem trying to extend the netfilter. Somone please help me with your quick reply (any hint) as I've to meet a deadline.
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Discussion started by: Rakesh Ranjan
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IPTABLES-SAVE(8) iptables 1.4.21 IPTABLES-SAVE(8)
NAME
iptables-save -- dump iptables rules to stdout
ip6tables-save -- dump iptables rules to stdout
SYNOPSIS
iptables-save [-M,--modprobe modprobe] [-c] [-t table]
ip6tables-save [-M,--modprobe modprobe] [-c] [-t table]
DESCRIPTION
iptables-save and ip6tables-save are used to dump the contents of IP or IPv6 Table in easily parseable format to STDOUT. Use I/O-redirect-
ion provided by your shell to write to a file.
-M,--modprobe modprobe_program
Specify the path to the modprobe program. By default, iptables-save will inspect /proc/sys/kernel/modprobe to determine the exe-
cutable's path.
-c, --counters
include the current values of all packet and byte counters in the output
-t, --table tablename
restrict output to only one table. If not specified, output includes all available tables.
BUGS
None known as of iptables-1.2.1 release
AUTHORS
Harald Welte <laforge@gnumonks.org>
Rusty Russell <rusty@rustcorp.com.au>
Andras Kis-Szabo <kisza@sch.bme.hu> contributed ip6tables-save.
SEE ALSO
iptables-restore(8), iptables(8)
The iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the
internals.
iptables 1.4.21 IPTABLES-SAVE(8)