Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: VLANs and their domains
Special Forums IP Networking VLANs and their domains Post 302907504 by jim mcnamara on Saturday 28th of June 2014 07:34:10 PM
Old 06-28-2014
You can create VLANs,not for common communication, but to isolate layer-2 communication from other network objects. Security.

Example:
If I am on VLAN A I may not be able to ssh over to VLAN B. A lot of places will do this with development versus production servers. Code librarians work on VLAN C with access to A and B. DMZ's are another possible example of isolation at the layer-2 level. Layer-1 isolation is the same idea. If bad guys cannot see network object at all it cannot be attacked. Air gap attacks notwithstanding.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

multiple domains

Hello, I have 3 domains virtually hosted "name based" the first one "domain1.com" has its ServerName entered as domain1.com. this domain will load in a browser by www.domain1.com or simply domain1.com. the next two domains "domain2.com" and "domain3.com" ServerNames are listed as domain2.com and... (2 Replies)
Discussion started by: ericg
2 Replies

2. UNIX for Dummies Questions & Answers

blocking domains

Dear All , Kindly note I have sun solaries 7 . I want to block a domain who keep sending emails to my domain and users . thanks (1 Reply)
Discussion started by: tamemi
1 Replies

3. UNIX for Dummies Questions & Answers

creating domains

ok i am setting up dns or going to do it with solaris 9 once u setup the domain what file can u look @ to see if it setup or not (4 Replies)
Discussion started by: rmuhammad
4 Replies

4. UNIX for Advanced & Expert Users

Different Nameservers for Different Domains?

I have a system that is connected to a private network with its own DNS (call it "privnet."), and is also connected to the Internet on a separate interface. Is it possible to convince this server to query the private nameserver for the private network's domain (e.g. "host foo.privnet."), and the... (2 Replies)
Discussion started by: vertigo23
2 Replies

5. IP Networking

vlans

Hi All, I'm trying to configure a vlan interface, to do this I'm using the following command "vconfig add eth0 20". I have my interface up and running, but when I test it using "ping -I eth0.20 192.168.1.1" and in other console use "tcpdump -i eth0.20" I can not see any tagged frame. ... (0 Replies)
Discussion started by: lagigliaivan
0 Replies

6. AIX

AIX / Etherchannel / VLANs

I have 1 AIX server, 4 dual ported fiber attached ethernet cards and 4 VLANS coming in. Is it possible to present those 8 ports as 1 IP address using etherchannel? Thanks. (5 Replies)
Discussion started by: jwholey
5 Replies

7. UNIX for Dummies Questions & Answers

Sub domains from report

Hi, I have a report containing severals organization's email address. The address contain several sub domains, and i need to pull those out. mail domain ( example.com) .................. The report column contain mail address in this format : john1@sub1.example.com... (2 Replies)
Discussion started by: john_prince
2 Replies

8. UNIX for Dummies Questions & Answers

Help with VLANs

Hi Gurus, Can anyone explain me what is a Vlan and a Native vlan. How to check the native Vlan on my server having a solaris10 OS. Thanks in advance.:) (2 Replies)
Discussion started by: rama krishna
2 Replies

9. Solaris

Oracle VMs and VLANs

I've been given an IP address to assign to an ldom that is in a different subnet than the host, and I am looking for assistance in getting it online. I believe I need "VLAN tagging" as found in this link, but I do not understand all of the terminology. My host machine is on subnet 10.25.112.x,... (1 Reply)
Discussion started by: bstring
1 Replies

10. Proxy Server

Linux Networking - VLANs & Multiple IP's

In a "typical" data centre environment (telco, financial services etc), would a Linux OS typically have one IP address connected to one VLAN or would it have many IPs and/or VLANs. I say "Linux OS" as I'm referring to an instance of the OS not necessarily a Host or server. Think Linux OS = VM in a... (9 Replies)
Discussion started by: PCB
9 Replies

LEARN ABOUT X11R4

asadmin-list-domains

asadmin-list-domains(1AS)					   User Commands					 asadmin-list-domains(1AS)

NAME

       asadmin-list-domains, list-domains - lists the domains in the given domains directory

SYNOPSIS

       list-domains [--domaindir install_dir/domains] [--terse=false] [--echo=false]

       list-domains lists the domains in the given domains directory. This command is supported in local mode only.

OPTIONS

       --domaindir	       directory where the domains are located. If specified, path must be accessible in the filesystem. If not specified,
			       the domains in the default install_dir/domains directory are listed.

       --terse		       indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well-
			       formatted data for consumption by a script.

       --echo		       setting to true will echo the command line statement on the standard output.

       Example 1: Using list-domains

       asadmin> list-domains
       List of domains:
       domain1 running
       samples not running

       Where: the domain1 and samples are listed and their status printed.

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-create-domain(1AS), asadmin-delete-domain(1AS), asadmin-start-domain(1AS), asadmin-stop-domain(1AS)

J2EE 1.4 SDK							    March 2004						 asadmin-list-domains(1AS)
All times are GMT -4. The time now is 11:55 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy