What arp -s is good for Post: 302720675

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1. Cybersecurity

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)?

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...

3. IP Networking

ARP Req Pkt

Does ARP Request packet Contains MAC Address of dest during broadcast? I found It So... When i captured ARP Req Pkts on ethereal... Rgds -Meti

4. HP-UX

HW Address and arp

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 ...

5. IP Networking

arp output (flags)

I'm running an arp -an on a Solaris 10 box. We're using IPMP. One of the systems is not able to see a host on the same network. The only difference between the two systems (one is having a problem, the other isn't) at least so far is the output of arp: # arp -an | grep 224.55 e1000g5...

6. Red Hat

Arp Problem

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...

7. IP Networking

Stuck ARP entries

About a week ago a customer hooked up a wireless router backwards to our network, causing it to serve incorrect DHCP addresses to some of them. Our networks are mostly statically assigned so this didn't cause as much damage as it might have, but now, over a week later, I still have incomplete...

8. UNIX for Advanced & Expert Users

arp questions

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

9. IP Networking

Protection against arp spoofing

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...

10. IP Networking

necessary ARP request?

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...

LEARN ABOUT REDHAT

ipcalc

IPCALC(1)								RH								 IPCALC(1)

NAME

       ipcalc - perform simple manipulation of IP addresses

SYNOPSIS

       ipcalc [OPTION]... <IP address>[/prefix] [netmask]

DESCRIPTION

       ipcalc provides a simple way to calculate IP information for a host.  The various options specify what information ipcalc should display on
       standard out. Multiple options may be specified.  An IP address to operate on must always be specified.	Most  operations  also	require  a
       netmask or a CIDR prefix as well.

OPTIONS

       -b, --broadcast
	      Display the broadcast address for the given IP address and netmask.

       -h, --hostname
	      Display the hostname for the given IP address.

       -m, --netmask
	      Calculate  the netmask for the given IP address. It assumes that the IP address is in a complete class A, B, or C network. Many net-
	      works do not use the default netmasks, in which case an inappropriate value will be returned.

       -p, --prefix
	      Show the prefix for the given mask/IP address.

       -n, --network
	      Display the network address for the given IP address and netmask.

       -s, --silent
	      Don't ever display error messages.

AUTHORS

       Erik Troan <ewt@redhat.com>
       Preston Brown <pbrown@redhat.com>

REPORTING BUGS

       Report bugs to our bugtracking system: http://bugzilla.redhat.com/bugzilla.

COPYRIGHT

       Copyright (C) 1997-2001 Red Hat, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       ipcalc(3)

Red Hat, Inc.							   April 30 2001							 IPCALC(1)

10 More Discussions You Might Find Interesting

1. Cybersecurity

ARP address resoluton

Discussion started by: ManishSaxena

2. Solaris

ARP Cache

Discussion started by: earlysame55

3. IP Networking

ARP Req Pkt

Discussion started by: ashokmeti

4. HP-UX

HW Address and arp

Discussion started by: xramm