Hi All,
I am running a IPv6 UDP server, which is bound to in6addr_any. When I send a packet from a client to the link-local address of any interface on the linux box, the server accepts the packets. But when I send the packets to the global address the server doesnt pick the packets.
On... (0 Replies)
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)
Hi everybody. I have the next scenary:
eth0: WAN
eth1: DMZ
eth2: LAN
I need to block all incoming trafic from the internet through my network LAN using iptables. I have squid but i need to do this using ipatbles.
I have been listening about iptables -A FORDAWARD but I am stuck right... (0 Replies)
Hi all,
I am new to Linux kernel.
we have a c file that counts the no. of sends and received packets in each interface, and indicate the user about the error/drop ration of incoming and outgoing packets.
in our Linux box , the incoming packets are dropped at random interval.
we have our... (1 Reply)
hello,
can anyone suggest how to delay the incoming packets ??
or how the packets are prossed inside the kernal and a way to make the packets wait a while??
it wud be vry helpful
regards
sameer (7 Replies)
Good afternoon everyone,
It's the iptables n00b again. valiantly learning and reading (and asking for occasional help when I hit a wall - which I think I just did)
So far I've gotten logging enabled for iptables.
Now, I want to drop AND log an IP connection attempt.
Could some wise eyes... (2 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)
Hello, I'm trying to route all packets arriving at a particular interface by entering the same interface
the virtual interface eth1: 2 and now everything is routed by default gw configured on eth1.
eth1 Link encap:Ethernet HWaddr 0a:0e:64:18:52:72
inet addr:192.168.10.15
eth1:2 ... (1 Reply)
Hi folks,
I have a debian server running an Apache daemon on the eth0 interface. Now from time to time the server has to open an openvpn connection (tun0) to other networks to get some data from there. During this period the Apache is no longer reachable under it's IP address on eth0 because all... (6 Replies)
Discussion started by: flyingwalrus
6 Replies
LEARN ABOUT REDHAT
tc-fw
Firewall mark classifier in tc(8) Linux Firewall mark classifier in tc(8)NAME
fw - fwmark traffic control filter
SYNOPSIS
tc filter ... fw [ classid CLASSID ] [ action ACTION_SPEC ]
DESCRIPTION
the fw filter allows to classify packets based on a previously set fwmark by iptables. If it is identical to the filter's handle, the fil-
ter matches. iptables allows to mark single packets with the MARK target, or whole connections using CONNMARK. The benefit of using this
filter instead of doing the heavy-lifting with tc itself is that on one hand it might be convenient to keep packet filtering and classifi-
cation in one place, possibly having to match a packet just once, and on the other users familiar with iptables but not tc will have a less
hard time adding QoS to their setups.
OPTIONS
classid CLASSID
Push matching packets to the class identified by CLASSID.
action ACTION_SPEC
Apply an action from the generic actions framework on matching packets.
EXAMPLES
Take e.g. the following tc filter statement:
tc filter add ... handle 6 fw classid 1:1
will match if the packet's fwmark value is 6. This is a sample iptables statement marking packets coming in on eth0:
iptables -t mangle -A PREROUTING -i eth0 -j MARK --set-mark 6
SEE ALSO tc(8), iptables(8), iptables-extensions(8)iproute2 21 Oct 2015 Firewall mark classifier in tc(8)