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Windows 7: Set up simple network and ensure security

04 Feb 2011   #51
balm

Windows 7 Home Premium - Desktop 32 bit / Laptop HP (G62) 64 BIT
 
 

1. if i set up files sharing in my hybrid network, while on the router/modem, is there any communication between the 2 computers (wirelss laptop & ethernet cabled desktop) over the internet. In other words is communication (file sharing) between computers completely independant of the internet, thus no more security risk involved than if the modem was not connected at all...?

2. i read up a little on "client for MS networks", "file & printer sharing", and "netbios over TCP", is my understanding correct that ALL of these must be enabled in order to use windows 7 file shariing, and if so do any of these share anything with the internet?

i read info here http://www.grc.com/su-fixit.htm and here http://www.grc.com/su-bondage.htm, but it becomes somewhat confusing...as im unsure what "should/could" be disabled if unecessary while still allowing file sharing...also the info appears somewhat outdated.

thank you


My System SpecsSystem Spec
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07 Feb 2011   #52
wilywombat

win7
 
 

Hi Balm,

1 No, there is no comms via the internet if you set up your homegroup properly.

2 Let windows 7 take care of what it needs! What you are doing, is to read up a lot on things that are possible, but if your firewall and security are setup properly, then there is little chance of happening.

Tip...When you read these articles, always read then from the perspective of the article writer... in your particular instance, the article is the attempt by the writer to peruade you to buy his product "Shields Up" so really he is trying to scare you into purchase anyway he can(In My Opinion).

Not everyone on the internet is trying to get you..just some guys try to take advantage! Make sure you look after your network setup, antivirus and anti-malware and you will be at the same risk level as most of us!!
My System SpecsSystem Spec
08 Feb 2011   #53
balm

Windows 7 Home Premium - Desktop 32 bit / Laptop HP (G62) 64 BIT
 
 

thanks Wiley, im just trying to understand the file sharing innerworkings concept.


1. as i understand it, files sharing can also be done without homegroup, but then its less conveniant, and can be less secure, is this the difference?
My System SpecsSystem Spec
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09 Feb 2011   #54
wilywombat

win7
 
 

That depends on where you are sharing the files between. If they are both behind your firewall and you use homegroup, its easy(recommended) anything else such as sharing files between the outside world and your machine behind a firewall does increase the security risk proportionate to where exactly the outside machine is (I'm thinking Bit torrent and other file sharing programs here).
My System SpecsSystem Spec
09 Feb 2011   #55
balm

Windows 7 Home Premium - Desktop 32 bit / Laptop HP (G62) 64 BIT
 
 

thanks wiley,

since you appear to question Gibsons motives, i would then ask you if you think the shields up port scan "all services" is reliable in terms of confirming whether or not my network is indeed "stealthed"...

thank you again!
My System SpecsSystem Spec
09 Feb 2011   #56
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

ShieldsUp is free, it doesn't cost anything, you don't have to pay for anything. Any recommendations for closing ports, or making them stealth does not require any other software, free or purchased.

There is no alterior motive behind ShieldsUp - its one of the best network security testing tools around, and it has been for some time..
My System SpecsSystem Spec
09 Feb 2011   #57
balm

Windows 7 Home Premium - Desktop 32 bit / Laptop HP (G62) 64 BIT
 
 

thank you golden,

i think maybe Wiley actually meant to refer to the other products ("Spin Rite" for example) which he is trying to sell (this is why i didnt correct him re. "shields up"),...

...i understand his point, raising awareness about vulnerabilities brings attention to his other products, but i get that thats very normal!
My System SpecsSystem Spec
09 Feb 2011   #58
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

No worries
My System SpecsSystem Spec
09 Feb 2011   #59
balm

Windows 7 Home Premium - Desktop 32 bit / Laptop HP (G62) 64 BIT
 
 

wiley, to summarize current config:

NAT wireless modem/router:
-changed default admin password
-changed default SSID
-disabled SSID broadcast
-enabled MAC address filter with wireless address only
-enabled WPA2-AES encryption w. 64 characters
-disabled DHCP (assigned static ips on devices)
-changed default internal IP
-firewall allowed outbound https, http, pop3, imap, smtp, DNS, "all other protocols", block all inbound, enabled stealth, block ping, enable all boxes on "attack detection"

i am not currently doing file sharing, so on the devices:

-Client for MS networks is enabled
-File & Printer sharing for MS Networks is DISABLED
-IPV 6 is enabled
-IPV 4 is enabled
-Entered static IPs under IPV 4 general, and preferred server DNS
-Left IP settings tab as is - with automatic metric enabled
-Left DNS tab as is
-WINS tab left LMHosts lookup enabled, changed default NETBIOS setting to enable NETBIOS over TCP/IP
-in folder options, view, left "Use sharing wizard (recommended)" enabled
-Enabled windows firewall, block all incoming except default rules, allow outbound except rules otherwise (need to work on this more...)


sounds good, correct?

im not too sure about the routers firewall outbound allowing "all other protocols", when i disabled it i lost my emails send - can the email be using some other protocols, other than smtp?

thanks
My System SpecsSystem Spec
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 Set up simple network and ensure security




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