05-06-2002
ARP address resoluton
How does ARP take care of uniqueness of physical addresses?
How does an ISP allocate a MAC address when I do not have an NIC( Network interface Card)?
10 More Discussions You Might Find Interesting
1. IP Networking
Can someone tell me if I tweak the destination field in an arp request for TCP connection to match it with the the mac addresses of different recivers in an ethernet as the packet passes through them in short each one catches the arp request and replies, what would happen I mean will the sender of... (2 Replies)
Discussion started by: Rakesh Ranjan
2 Replies
2. Solaris
Dear all,
We are testing two of our servers for mq series connectivity. The scenario is, when one machine is shutting down it's services there are some scripts that do a dns update, which removes the ip address and relates it to the ip address of the other node on our dns server, and the update... (7 Replies)
Discussion started by: earlysame55
7 Replies
3. HP-UX
I was checking nettl output for a unstable telnet to my server. this is part of output:
###
***********************************STREAMS/UX*******************************@#%
Timestamp : Sun Jun 22 EETDST 2008 22:14:47.492899
Process ID : Subsystem ... (4 Replies)
Discussion started by: xramm
4 Replies
4. IP Networking
Hi All,
Is there any way to modify or filter the ARP frames??
thanks! (2 Replies)
Discussion started by: lagigliaivan
2 Replies
5. Red Hat
Dear All
i have a linux proxy server which has RHEL-5 64 bit, it has two interfaces, it has the following details
eth0=10.200.14.42
eth3=10.201.14.42
default gateway=10.201.14.254
one static route=192.168.0.0/24 gw 10.200.14.254
i am facing a problem when i ping 10.201.14.42 from... (2 Replies)
Discussion started by: surfer24
2 Replies
6. UNIX for Advanced & Expert Users
Can someone please explain this output to me. Why doesn't ifconfig show the same info?
~ $ arp -a
? (10.71.0.1) at 00:1b:21:2b:eb:0c on eth0 (4 Replies)
Discussion started by: cokedude
4 Replies
7. IP Networking
Hi, I'm trying to find a way to protect my network against arp spoofing.
What it is:
An attacker sends fake arp packets in the network, identifying himself as the router. All network traffic is then redirected to this attacker.
How to protect myself:
In my opinion, the best possible... (2 Replies)
Discussion started by: chrisperry
2 Replies
8. IP Networking
Hello,
I have 2 clients with Unix installed.
host1: eth0 (192.168.5.10) & eth1 (192.168.10.10)
host2: eth0 (192.168.10.20)
I've connected host1-eth1 to host2-eth0. host1-eth0 isn't connected.
I started 'tcpdump' on wonder that host2 got ARP requests for 192.168.5.10.
Any idea why host1... (2 Replies)
Discussion started by: daWonderer
2 Replies
9. War Stories
A customer appears to have drastically misunderstood our instructions for connecting to our WAN. He set his PC IP address to the same as one of the bridges. :mad: :wall: This caused much confusion on the network, to put it mildly. He called to complain about the poor performance of the network... (13 Replies)
Discussion started by: Corona688
13 Replies
10. Red Hat
Hello,
I am setting up a new RedHat server with two network interfaces.
These interfaces are on different subnets, and connected to the same firewall.
I'm trying to reach a remote IP.
It works fine from the first interface.
The second interface however, is making ARP requests instead of... (0 Replies)
Discussion started by: Wanou85
0 Replies
IWSPY(8) Linux Programmer's Manual IWSPY(8)
NAME
iwspy - Get wireless statistics from specific nodes
SYNOPSIS
iwspy interface
iwspy interface [+] DNSNAME | IPADDR | HWADDR [...]
iwspy interface off
DESCRIPTION
Iwspy is used to set a list of addresses in a wireless network interface and to read back quality of link information for each of those.
This information is the same as the one available in /proc/net/wireless : quality of the link, signal strength and noise level.
This information is updated each time a new packet is received, so each address of the list add some overhead in the driver.
Note the this functionality work only for node part of the current wireless cells.
PARAMETERS
You may set any number of addresses up to 8.
DNSNAME | IPADDR
Set an IP address, or in some cases a DNS name (using the name resolver). As the hardware work with hardware addresses, iwspy will
translate this IP address through ARP. In some case, this address might not be in the ARP cache and iwspy will fail. In those case,
ping(8) this name/address and retry.
HWADDR Set a hardware (MAC) address (this address is not translated & checked like the IP one). The address must contain a colon (:) to be
recognised as a hardware address.
+ Add the new set of addresses at the end of the current list instead of replacing it. The address list is unique for each device, so
each user should use this option to avoid conflicts.
off Remove the current list of addresses and disable the spy functionality
FILES
/proc/net/wireless
SEE ALSO
iwconfig(8), ifconfig(8), iwlist(8). iwpriv(8).
net-tools 31 October 1996 IWSPY(8)