Solved

Ports question

Posted on 2009-07-11
2
198 Views
Last Modified: 2012-05-07
Hello!
I want to double check something...If I have a CLOSED port 113...would it mean that noone can connect to me using that port even if they try?If so-then I have nothing to worry about,right?
I run a web and mail server on my PC...Is there any NEED for port 113 NOT being stealth?
And should I stealth port 113 or just leave it closed?
0
Comment
Question by:abrodski
2 Comments
 
LVL 6

Accepted Solution

by:
microbolt earned 500 total points
ID: 24833295
You can safely ignore it showing as closed.

Port 113 is often left visible by firewalls since 113 is the IDENT port.

IDENT is used when you connect to mail servers, or to IRC servers, to find out "who" is using the service. With IDENT filtered, your ISP mail server (unlikely) or IRC server (likely) may refuse your request or take a long time to respond as it waits for a closed/open response.

It is possible to remove IDENTD as showing up as a port by reconfiguring your firewall to over-ride the default rules. As above, if IDENTD is filtered in this way, IRC and mail servers may not work properly.

You can also decide that IDENTD is safe, since just having it visible does not mean there is anything that can be exploited on your side, and live with the less than "perfect" results.
0
 
LVL 12

Expert Comment

by:Steve
ID: 24833315
to check which ports you have open on your machine use GRC's port checking application :

https://www.grc.com/x/ne.dll?bh0bkyd2

it will test the common ports and report what is open and what isnt..

but you are correct.. 113 is NOT required for mail..

0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Creating a Vendor Admin user 23 80
Non admin needs to install programs 17 65
Setting up NAT translation for RDP 6 39
EmsisoftAntiMalware is it trusted reliable 4 15
If you thought ransomware was bad, think again! Doxware has the potential to be even more damaging.
Knowing where your website is hosted is as important as the features you receive, the monthly fee, and the support you receive. Due diligence should be done when choosing your next hosting provider.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question