Displaying 20 results from an estimated 50000 matches similar to: "Dead Gateway Detection & BGP"
2002 Jun 07
1
zebra bgp and shorewall
Hi,
I plan to implement a redundant Internet connection using BGP on 2
different Linux Routers. The routing daemon software I will be using is
Zebra (zebra.org).
I''m wondering if I should have my Linux firewall behind the 2 BGP routers,
or could I keep the shorewall on both BGP routers?
Has anyone had any experience with this?
Any help is much appreciated.
Thanks,
Sam
2006 Nov 25
3
Fail-over uplink problem
Hi list,
I have a problem I thought was simple first, but now I''m stuck.
In a nutshell, it''s about redundant uplinks at an outside location.
Crude ASCII-Art follows:
Internet
| |
+------------+
| cisco with |
| uplinks |
+------------+
| | ATM interface
+----------+ ...
| alvarion | |
| wireless
2007 May 06
3
Traffic Shaping
Dear List,
I am wanting to perform some traffic shaping as the subject of this email
suggests.
What I am wanting to do is this; I would like to have traffic shaping
performed on the following protocols: HTTP, RDP, GRE, PPTP, SIP and IAX.
Obviously I would like to have highest priority set for voice packets so
much so that the general http traffic does not impede on the voice packets.
I
2004 Apr 02
1
Complex Routing/Firewalling/Bridging question
I''m being cast headlong into unfamiliar waters here, and being desperate for
some air, thought I''d come here for some help. :)
Anyway, my employer is going through some whiplash-inducing growth spurts,
and as a result, the simple "Internet T-1 -> Linux Firewall/NAT -> LAN"
setup just isn''t going to cut it anymore.
First, we''re bringing in 2
2006 Dec 13
7
ipp2p Problem
Hello,
can anybody interpret what the following means:
[root@funke ipp2p-0.8.0]# iptables -t mangle -A MarkList0x666-ipp2p -p
tcp -m ipp2p --edk -j MarkSet0x666
iptables: Unknown error 4294967295
-----
I have installed ipp2p-0.8.0 via:
make
copied ipt_ipp2p.ko to my kernel lib dir
copied libipt_ipp2p.so to my iptables lib dir
insmod ipt_ipp2p gives the following in dmesg:
IPP2P v0.8.0
2006 Nov 21
7
VPN Solution
Greetings List Members,
I''ll firstly apologise if this isn''t the place that I should be posting this
message but here goes.
What I want to do is have a VPN (PPTP/IPSEC/CIPE/etc) server, but it must
support more than one simultaneous connection.
I currently have a PPTP VPN server setup that has port 1723 and protocol 47
DNAT''d through to the internal IP
2005 Oct 13
2
wondershaper....
Hi,
I am new to the Linux Advance Routing Project and to Policy Based
Routing as implemented in Linux.... but I have been using Linux for 10
years so not _really_ a newbie.... Looking at the lartc.org website I came
across the reference implementation of a traffic shaper...
I also have Matt Marsh''s book on ''Policy Based Routing using Linux''
which covers traffic
2007 Dec 12
5
bgp require in multigateway routing
hi all,
first i wann to explain my network & it''s problem,
i am using a redhat el5 for multigateway routing, i have 3 adsl lines which is connected with eth0, eth2 and eth3. eth1 is my local network.
those 3 lines comes with adsl modem from same isp with equal bandwidth (512 Kbps).
In this adsl modems there is one lan and one wan port, adsl modem''s lan ip is gateway for my
2007 Dec 06
3
Best setup for redundant routers.
I am setting up 2 Vyatta routers that will serve as redundant failover
core routers out to the backbone of our ISP. They will be serving for
routing between other branches and the ISP and bandwidth management.
I am trying to differentiate between the plethora of information about
having redundant, automatic failover routers and pretty much decided on
VRRP for the IP address failover mechanism.
I
2006 Dec 28
1
How to add a route to a network via 2 gateways.
Hi iproute2,
I have a network to reach which is 192.168.2.0/24. It is a branch of the
company. I have currently added a route to that network via one gateway (
192.168.0.254) in following way.
ip route add 192.168.2.0/24 via 192.168.0.254
Now, We got another gateway which is 192.168.0.250. Now I want to add a
route to the same network which is 192.168.2.0/24 via this gateway (
192.168.0.250)
2004 Apr 20
10
TCP RST attack
http://www.uniras.gov.uk/vuls/2004/236929/index.htm
----Quote----
"The impact of this vulnerability varies by vendor and application, but in
some deployment scenarios it is rated critical. Please see the vendor
section below for further information. Alternatively contact your vendor
for product specific information.
If exploited, the vulnerability could allow an attacker to create a
2007 Apr 17
6
[Bug 554] Packet illegaly bypassing SNAT
https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=554
------- Additional Comments From fhagur@gmail.com 2007-04-17 05:04 MET -------
I have been wondering about this bug and had similar problems myself here in my
Debian system, linux-kernel 2.6.18 iptables 1.3.6.
I too saw that some packets became transmitted illegally through the ppp0
interface, when they just shoudn't.
What I
2007 Apr 01
2
CentOS + GNU Zebra
Hi folks,
At work, we're considering the idea to replace the presente router with
a stardard box with CentOS as a SO and GNU Zebra as a routing software.
The line is a 4Mbps SDSL.
?What do you think about Zebra and what are your experiencies with it?
Any feedback will be so appreciated.
TIA.
2007 Apr 18
1
[Bridge] help setting up a linux bridge with spanning tree to allow multiple vlans accross multiple uplinks
For easy reading: http://www.karthaus.nl/r/
Hi,
We used to have 1 single ip range (1.1.1.0/24) that had one uplink to a =
switch of the colocation provider.
Recently we got a second range 2.2.2.0/24 and a redundant uplink =
directly on two routers. But our switch does not have spanning tree =
protocol support so we cannot use them redundantly.
We have set up the switch to have a vlan for both
2008 Feb 12
7
Making FORWARD_IPV4=YES permanent / DHCP multiple routers
First,
I'd like to configure my system to forward ip, to act as a gateway for
my network. I've always used a script during startup to do this:
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o ${UPLINK} -j SNAT --to ${IP_NAT}
This works fine, however I want this permanent so I don't have to run
the script on startup. I have the firewall setup with SNAT
2004 May 21
2
Zebra and Rip Blocking Broadcast
After installing Zebra for ripd to get win2k routes I am getting this
May 20 23:24:20 ns1 kernel: Shorewall:net2all:DROP:IN=eth0 OUT= MAC=
SRC=64.42.53.202 DST=64.42.53.207 LEN=92 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF
PROTO=UDP SPT=520 DPT=520 LEN=72
May 20 23:25:25 ns1 last message repeated 3 times
I am new to zebra, so I am assuming that this is broadcasting to windoz
for routes weird !!!
2006 Apr 30
1
PPPoe, Bgp
Refering to pppoe i have next problem :
I asked my isp if i can buy a class of real ip`s to be routed by them.
They said elegantly it can`t be done .
I want opinions .
I am using an ADSL connection through a Speedtouch 510 configured in bridge.
About Bgp :
i asked someone if i can peer 2 different locations on 2 different ip`s
using private asn number and he said yes , and what i don`t
2003 Jul 22
1
Asking for help
Sirs,
I am a newbe jumping to advance routing and traffic control. I work for
one of the leading isp in kingdom of Nepal. My goal is to do bandwidth
management for our lease line customer so that they could use their
allocated bandwidth only. Bgp and ospf is implemented as a routing
protocol. All routers are cisco routers. There are about 16 routers some
are with highly danced ports. No Linux box
2007 Jul 19
10
gateway failover with linux
Hi.
I''m wondering if there''s a good way to configure a Linux firewall box to
failover to a single backup server, while preserving connection state.
This question has been asked before, but the latest reference I can find
is from 2004, at which time Linux had no equivalent of OpenBSD''s pfsync,
though Harald was said to be working on one.
Did anything come of those
2006 Dec 12
11
SIP, NAT, and load balancing problems
Hello all,
I have a linux machine with a SIP server (Asterisk) and 2 WAN interfaces
(NATed) configured to do load balancing. I experienced problems with the
SIP/RTP protocols and load balancing, because when initiating a call to
an external SIP Host, a new RTP flow starts from the server to the Host,
that sometimes uses another default route (due to the nexthop
configuration). As i have two