RE: one external IP to multiple internal IPs? Ideas? -- MIDRANGE-L

Well, they charge $200 for two of them... maybe more.  That's what our
network guys bill us.  Maybe we're getting robbed.  Wouldn't be the first
time.  ;)

What I was really hoping was to have as a last resort was an Instance
running on the AS/400 that did the forwarding for me.  But, that would
change the URL in the browser (I think) and that wouldn't be good.

Thanks for all your help guys!

Brad

> -----Original Message-----
> From: Walden H. Leverich [mailto:WaldenL@techsoftinc.com]
> Sent: Tuesday, May 09, 2000 9:05 AM
> To: 'MIDRANGE-L@midrange.com'
> Subject: RE: one external IP to multiple internal IPs? Ideas?
> 
> 
> Unfortunately, your network guys are correct. Based on what 
> you are saying
> you are probably using network address translation (NAT) to 
> map from the
> external addresses to the internal addresses. There is no way to map a
> single external address to multiple internal addresses (ignoring load
> balancing, which doesn't help you here). You will need to 
> have multiple
> external addresses. However, this shouldn't be a problem, 
> your ISP should
> give you plenty of addresses. If you've run out, just ask for more. 
> 
> -Walden
> 
> -----Original Message-----
> From: Stone, Brad V (TC) [mailto:bvstone@taylorcorp.com]
> Sent: Monday, May 08, 2000 2:38 PM
> To: 'MIDRANGE-L@midrange.com'
> Subject: RE: one external IP to multiple internal IPs? Ideas?
> 
> 
> But the guys that have the router say I can't map more than 
> one internal IP
> to one external IP.
> 
> Brad
> 
> > -----Original Message-----
> > From: Chris Bipes [mailto:rpg@cross-check.com]
> > Sent: Monday, May 08, 2000 12:52 PM
> > To: 'MIDRANGE-L@midrange.com'
> > Subject: RE: one external IP to multiple internal IPs? Ideas?
> > 
> > 
> > Look like the best approach to me.  You may also want to 
> bind this IP
> > address to one particular interface if you have more than one 
> > on the system.
> > I prefer to have internal telnet to one IP and interface and the
> > web/mail/... to other IPs and interface.  This can be in 
> > different subnets
> > and different physical switches, hub and routers as well.
> > 
> > Christopher K. Bipes         mailto:ChrisB@Cross-Check.com
> > Sr. Programmer/Analyst       mailto:Chris_Bipes@Yahoo.com
> > CrossCheck, Inc.     http://www.cross-check.com
> > 6119 State Farm Drive        Phone: 707 586-0551 x 1102
> > Rohnert Park CA  94928 Fax: 707 586-1884
> > 
> > If consistency is the hobgoblin of little minds, only 
> > geniuses work here.
> > Karen Herbelin - Readers Digest 3/2000
> > 
> > 
> > -----Original Message-----
> > From: Stone, Brad V (TC) [mailto:bvstone@taylorcorp.com]
> > Sent: Monday, May 08, 2000 8:30 AM
> > To: 'MIDRANGE-L@midrange.com'
> > Subject: one external IP to multiple internal IPs? Ideas?
> > 
> > 
> > I am looking for ideas.
> > 
> > We have an As/400 that we are using for web serving.  Our 
> > network group has
> > a router set up to route requests to it.
> > 
> > This server will be serving multiple companies for customer 
> > service.  What I
> > would like to do ideally is set up an instance for each 
> company (using
> > BindSpecific) so that each of them can run in seperate jobs.  
> > Also, logging
> > seperately is another reason I want to do this.
> > 
> > What we plan on doing is making a subdomain for the companies 
> > that will
> > route these requests to the AS/400.  For example, 
> > company1.com will have a
> > subdomain of cso.company1.com that will be routed a 
> > particular external IP
> > address, then routed to the AS/400.
> > 
> > Our network guys tell me they can only route IPs on a one to 
> > one basis, so
> > to run multiple servers I would need an external IP for 
> each company.
> > 
> > So, here's what I want..
> > 
> > URL                 Ext. IP      AS/400 IP
> > cso.company1.com -> 218.1.1.2 -> 172.25.6.1
> > cso.company2.com -> 218.1.1.2 -> 172.25.6.2
> > etc.. 
> > etc..
> > 
> > Does anyone else have any better ideas?  I know I can use 
> > virtual hosts and
> > one IP address, but like I said, I'd rather keep them seperate.
> > 
> > Brad> 
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