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Secure Firewall on a Peer to Peer w/DSL?

By Crista B ·
Hi. Does anyone know of a reliable way to secure a peer to peer? My company has a small network (7pcs) w/98SE. We will be getting DSL shortly and I am concerned about hackers. We are running Norton Internet Security but upon testing some of
our computers they still show open ports currently. I have been asking around and have gotten many different suggestions. A
number of people have told me that we should set up an NT Server. However, becasue we have proprietary acocunting software, and also becasue of the other compatibility issues I have heard of with Windows 2000, it does not seem to be a possible choice for us at this time. On the other hand, it does not
make sense to me to spend money purchasing and implementing NT4.0, which is being phased out. Another suggestion I have gotten is to leave our network as it is and
install some type of hardware firewall/router like Webramp. However,
someone else told me that would not actually create any security at all on a peer-to-peer. I would very much appreciate your opinion in helping me sort out fact from
fiction. Thanks! Crista

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Secure Firewall on a Peer to Peer w/DSL?

by avachon In reply to Secure Firewall on a Peer ...

Hi, take a look at zone labs products (www.zonelabs.com). Their security firewall works well (and easy to configure). Also, it's free (or at least a minimum charge). You also can test your firewall configurations by going to www.grc.com (gibson research) and they will test your security and probe the ports looking for access points. Both sites have a lot of information and FAQs. Hope this helps.

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Secure Firewall on a Peer to Peer w/DSL?

by Crista B In reply to Secure Firewall on a Peer ...

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Secure Firewall on a Peer to Peer w/DSL?

by kralljd In reply to Secure Firewall on a Peer ...

Simple solution

If you have 98SE and you are talking about blocking that port from the internet...

Go to http://search.support.microsoft.com/kb/
Search all products for Q241570

This article explains security settings using ICS (InternetConnection Sharing)..

Use ICS and a product like BlackIce Defender on the 98SE computer connected to DSL.

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Secure Firewall on a Peer to Peer w/DSL?

by Crista B In reply to Secure Firewall on a Peer ...

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Secure Firewall on a Peer to Peer w/DSL?

by Susu In reply to Secure Firewall on a Peer ...

The best method I have found is to purchase a LinkSys broadband router (less than $100 from Outpost.com). The setup is simple, but it has many advanced features if you need them, and as far as I can tell so far, with the default settings, it is completely invisible from the outside network.

Another benefit is that by using Network Address Translation (NAT) you only need one legal IP address. This may be cheaper than trying to get 7 IP addresses from your ISP.

If you need incoming connections (such as a mail server on your internal network) the device can be configured to pass through traffic on a specific port only to a specific machine.

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Secure Firewall on a Peer to Peer w/DSL?

by Susu In reply to Secure Firewall on a Peer ...

By the way. . .

The correct name of the product is: Etherfast Cable/DSL Router (1 Port)

The Outpost.com sku # is: 63577

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Secure Firewall on a Peer to Peer w/DSL?

by Crista B In reply to Secure Firewall on a Peer ...

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Secure Firewall on a Peer to Peer w/DSL?

by Lyf In reply to Secure Firewall on a Peer ...

I agree completely with Answer #1. NT, Win2000, etc are not necessary for your purposes. Yes - you could install an expensive firewall device - but it again is not necessary.

Most important for small peer-to-peer networks is a strong firewall solution - and ZoneAlarm fits the bill very well. Another great thing about ZoneAlarm (that BlackIce and others lack) is control also over your OUTGOING connections. This is especially important for detecting and controlling trojans.

While over at Gibson's "Shields Up" site that the answer #1 recommended (and I second!) - check out the "Network Bondage" topic, which will spell out clearly and in great detail exactly what you need to do to ensure that maximum security is achieved while still allowing complete file sharing and internet functionality.

Hope this helps :-)

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Secure Firewall on a Peer to Peer w/DSL?

by Crista B In reply to Secure Firewall on a Peer ...

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Secure Firewall on a Peer to Peer w/DSL?

by Crista B In reply to Secure Firewall on a Peer ...

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