Anti-Spyware Forums


Reply
Thread Tools Display Modes

port blocking

 
 
RB
Guest
Posts: n/a

 
      20-03-2010, 02:03 AM
I am still confused about this issue and need some reinforcement of
ramifications. If I go into my router's setup and block ports
135~139 and 445, I understand this will block access of these ports
to anything coming from outside of my NAT router.
But does blocking any of these ports interfere with netbios sharing
of my workgroup inside (behind the NAT but still going thru wireless
port on router ) my LAN ?


 
Reply With Quote
 
 
 
 
David H. Lipman
Guest
Posts: n/a

 
      20-03-2010, 02:34 AM
From: "RB" <NoMail@NoSpam>

| I am still confused about this issue and need some reinforcement of
| ramifications. If I go into my router's setup and block ports
| 135~139 and 445, I understand this will block access of these ports
| to anything coming from outside of my NAT router.
| But does blocking any of these ports interfere with netbios sharing
| of my workgroup inside (behind the NAT but still going thru wireless
| port on router ) my LAN ?


No. It does not affect nodes on the LAN. It only affects communications going across the
LAN/WAN barrier. That is the whole idea.


--
Dave
http://www.claymania.com/removal-trojan-adware.html
Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp


 
Reply With Quote
 
 
 
 
RB
Guest
Posts: n/a

 
      20-03-2010, 03:16 AM
So when I block these ports in my Linksys router, it only blocks on
the WAN port going to my cable modem and it does not block the
router's wireless port and the router's hard wire Lan ports.
And when I read texts that state disabling certain ports between 135 ~ 139
will keep the Netbios name table and browser service from working, they are
referring only to access coming in thru the WAN ( I surmise Remote access
and/or VPN ? ) .
Correct ?

"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote in message news:%(E-Mail Removed)...
> From: "RB" <NoMail@NoSpam>
>
> | I am still confused about this issue and need some reinforcement of
> | ramifications. If I go into my router's setup and block ports
> | 135~139 and 445, I understand this will block access of these ports
> | to anything coming from outside of my NAT router.
> | But does blocking any of these ports interfere with netbios sharing
> | of my workgroup inside (behind the NAT but still going thru wireless
> | port on router ) my LAN ?
>
>
> No. It does not affect nodes on the LAN. It only affects communications going across the
> LAN/WAN barrier. That is the whole idea.
>
>
> --
> Dave
> http://www.claymania.com/removal-trojan-adware.html
> Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp
>
>



 
Reply With Quote
 
David H. Lipman
Guest
Posts: n/a

 
      20-03-2010, 11:34 AM
From: "RB" <NoMail@NoSpam>

| So when I block these ports in my Linksys router, it only blocks on
| the WAN port going to my cable modem and it does not block the
| router's wireless port and the router's hard wire Lan ports.
| And when I read texts that state disabling certain ports between 135 ~ 139
| will keep the Netbios name table and browser service from working, they are
| referring only to access coming in thru the WAN ( I surmise Remote access
| and/or VPN ? ) .
| Correct ?

Y E S !



--
Dave
http://www.claymania.com/removal-trojan-adware.html
Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp


 
Reply With Quote
 
 
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Proxomitorn blocking port 1239 Peter James Spyware 0 25-07-2005 10:41 AM
blocking port 25 gene Security Software 1 28-06-2005 06:03 AM
port blocking in DOS Fred Security Software 4 28-10-2004 05:51 PM
Effects of Port Blocking on Apps MoCity Security Software 1 16-04-2004 09:33 PM
Effects of Port-Blocking on Applications MoCity Security Software 0 16-04-2004 08:16 PM


All times are GMT. The time now is 06:36 PM.