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Conference gyro::internet_toolss

Title:	Internet Tools
Notice:	Report ALL NETSCAPE Problems directly to [email protected].rnet? Read note 448.L for beginner information.
Moderator:	teco.mro.dec.com::tecotoo.mro.dec.com::mayer

Created:	Fri Jun 25 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	4714
Total number of notes:	40609

4670.0. "IP Filtering software needed" by NQOS01::voyager.lex.dec.com::wav14.pko.dec.com::isler () Tue May 13 1997 16:41

A customer needs an IP filter. 

They already have a firewall on a Sun server, and Domino (Lotus Notes) will 
be running on an Alpha NT machine. 

They want the Domino web server to sit outside of the firewall, but only 
allow certain certain IP addresses (either a range, a subnet, or a specific 
IP address) to have access to it.

I suggested Altavista Tunnel as an alternative, but although they like the 
Digital products, they want a simpler solution for this, since they will be 
working with many other companies, and cannot dictate them to use 
additional software. 

Are there any products that can do this, can it run on the Alpha NT Domino 
server, and only filter the allowed IP addresses and give them access? Or 
would it have to sit on the Sun firewall server and filter the addresses 
for the Domino's proxy server?

Yasemin

T.R	Title	User	Personal Name	Date	Lines
4670.1		teco.mro.dec.com::tecotoo.mro.dec.com::mayer	Danny Mayer	`Tue May 13 1997 17:50`	6
	This is a case where they actually want the server to sit INSIDE the firewall and set up the firewall to allow access by specific IP addresses (or sets of addresses) to only that server. This is easier to do than the other way round. Danny
4670.2		BIGUN::nessus.cao.dec.com::Mayne	A wretched hive of scum and villainy	`Tue May 13 1997 18:54`	6
	Presumably their network is using a router to get to the Internet. If all they want is a packet screener, the router should be perfectly capable of providing that functionality. The logging probably won't be as good as the firewall's, though. PJDM
4670.3		CHEFS::16.42.4.227::hattos	I'm back - as a matter of fact	`Wed May 14 1997 04:07`	2
	Can't they use the packet filtering which is supposed to be built into NT4 now?
4670.4		teco.mro.dec.com::tecotoo.mro.dec.com::mayer	Danny Mayer	`Wed May 14 1997 10:18`	10
	> Can't they use the packet filtering which is supposed to be built into NT4 > now? I'm not aware of packet filtering being built into NT 4. Why would they do that? PS: Stu, you need to get reverse lookup records set up in your local domain, it's all showing up as IP addresses in this notes conference. Danny
4670.5		BIGUN::nessus.cao.dec.com::Mayne	A wretched hive of scum and villainy	`Wed May 14 1997 19:14`	5
	That'll be Steelhead: http://www.microsoft.com/ntserver/info/steelhead.htm PJDM
4670.6	Any shipping products?	NQOS01::voyager.lex.dec.com::wav14.pko.dec.com::isler		`Thu May 15 1997 16:16`	11
	Steelhead is still in beta, and these guys need to have it in production by June 1st. They did look into a freeware from the GNU folks (CNS) which does what they want, but they want a product that is supported and with a GUI interface. Also, being inside the firewall, this web site will be strictly for external use, limited to certain customers; that is why outside the firewall. Yasemin
4670.7	should be builtin	ULYSSE::PIKE		`Fri May 16 1997 06:06`	14
	Doesn't the Domino web server have configurable access directives? Something like: <Limit GET> allow from .dec.com .digital.com 16. deny from all </Limit> The major web servers (Apache, NSCA, Netscape...) have this type of functioanlity. /charly
4670.8		teco.mro.dec.com::tecotoo.mro.dec.com::mayer	Danny Mayer	`Fri May 16 1997 12:24`	24
	> Steelhead is still in beta, and these guys need to have it in production by > June 1st. > Steelhead is overkill for what they need. In any case it's a router rather than a filter. I don't see how it would be useful to them. > They did look into a freeware from the GNU folks (CNS) which does what they > want, but they want a product that is supported and with a GUI interface. > I've never heard of this one. > Also, being inside the firewall, this web site will be strictly for > external use, limited to certain customers; that is why outside the > firewall. My suggestion still stands since you can specify to the firewall what IP addresses to allow in. It's not clear why you would want to keep it OUTSIDE the firewall, just because it's for external use. That part doesn't matter. What matters is that you can set up the firewall filters to allow ONLY those customers that you want to access that system and limit those IP addresses to ONLY access that one system. It's simple, it's easy and, most of all, it does the job. Danny
4670.9		SPECXN::WITHERS	Bob Withers	`Fri May 16 1997 12:39`	4
	Have you looked at he securities properties of TCP/IP on NT 4? CONTROL PANEL ! NETWORKS ! PROTOCOLS ! TCP/IP ! ADVANCED ! ENABLE SECURITY ! CONFIGURE
4670.10	NT V4 filtering	PARZVL::ogodhcp-124-40-99.ogo.dec.com::kennedy	nuncam non paratus	`Fri May 16 1997 14:34`	5
	>Have you looked at he securities properties of TCP/IP on NT 4? A quick look at that control panel shows that you can filter which TCP & UDP ports and which IP protocols to allow, but doesn't seem to filter by source address.
4670.11		BIGUN::nessus.cao.dec.com::Mayne	A wretched hive of scum and villainy	`Sun May 18 1997 19:10`	22
	> Steelhead is overkill for what they need. In any case it's a router > rather than a filter. I don't see how it would be useful to them. Danny, see http://www.microsoft.com/ntserver/info/steelfeatures.htm: SECURITY IP packet filtering "Steelhead" supports a variety of inbound and outbound packet filtering features. These packet filtering features provide an important measure of network security. Here is a list of filtering options: TCP Port, UDP port, IP protocol ID, ICMP type, ICMP code, source address, destination address. IPX packet filtering "Steelhead" also supports a similar level of packet filtering for IPX packets. Here is a list of IPX packet filtering options: source address, source node, source socket, destination address, destination node, destination socket, and packet type. PJDM
4670.12		teco.mro.dec.com::tecotoo.mro.dec.com::mayer	Danny Mayer	`Mon May 19 1997 10:25`	27
	>> Steelhead is overkill for what they need. In any case it's a router >> rather than a filter. I don't see how it would be useful to them. > > Danny, see http://www.microsoft.com/ntserver/info/steelfeatures.htm: > > SECURITY > > IP packet filtering > > "Steelhead" supports a variety of inbound and outbound packet filtering > features. These packet filtering features provide an important measure of > network security. Here is a list of filtering options: TCP Port, UDP port, IP > protocol ID, ICMP type, ICMP code, source address, destination address. > > IPX packet filtering > > "Steelhead" also supports a similar level of packet filtering for IPX packets. > Here is a list of IPX packet filtering options: source address, source node, > source socket, destination address, destination node, destination socket, and > packet type. > > PJDM What's your point? It's still a router rather than a filter. All routers need to have some filtering capability. Danny
4670.13		BIGUN::nessus.cao.dec.com::Mayne	A wretched hive of scum and villainy	`Mon May 19 1997 19:11`	8
	What's my point? Someone asked for an IP filter. Steelhead was mentioned. You said "In any case it's a router rather than a filter. I don't see how it would be useful to them." I pointed out that it is (amongst other things) a filter, and therefore might be useful to someone who wants to do IP filtering, even if it is overkill. PJDM