Generic Net+ type question

blazerazor

Golden Member
Aug 28, 2003
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Ok, Here's is what was given to me.

IP's :: 69.34.102.33 -38 (6 ip addresses to given for us to use)
Sub :: 255.255.255.248
gate :: 69.34.102.32
dns :: 69.34.104.1
dns :: 69.34.104.2

The way you have to get access now is to make the computers address static with the settings above. Then you can get access to the internet WLAN.

Now, I figured I'd take a router out there make its address one of the above available and let it make its own address's for the three users in the room. Then as far as the other guys network is concerned I'm just one computer (sending the activity of 3 users). Is my Theory correct here? or

Do I need to be doing something else. I try'd to make my router static with all the setting and it wont work, I keep getting 'gateway error' or out of range or something. But it was the gateway. The ONLY address field with a different xxx.xxx.123.xxx,.where 123 is differ from the rest of the addresses.

I am working with a generic Linksys blue 4-port router switch w/vpn box.
There is a plain looking box there that is tiny white GIGA Ethernet (all it says) box there. I figured its just a switch. Can I just by pass that. I was playing with it both ways, once thru it, once without.

Thanks for reading this and any input would be much appreicated.

 

blazerazor

Golden Member
Aug 28, 2003
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I am not paying for them. The IT guy has made these available for use to use (DMZ), currently I have to make the (users) computer one of the static addresses (xxx.xxx.xxx.33-38) going thru the gateway with that subnet mask.

Thats all good and dandy, but when the guys go (home, office, coffee shop) their laptop has a Static ip inputed in there and they can't access there mail - so they come to me with problems. And no I can teach these guys to just go set it back to Dynamic. Plus its just too much unnessary work.
 

Cloud Strife

Banned
Aug 12, 2006
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Can't you just plug a router and assign it one of those static IP addresses? Then plug your client's computers to the router/switch with dynamic IPs given by your router's DHCP server.
 

ScottMac

Moderator<br>Networking<br>Elite member
Mar 19, 2001
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You can put in a router (soho flavor or otherwise) using one of the assigned addresses for the "outside" address, then have the router do NAT (also called PAT or NAPT, depending on the vendor) to one pc/device or a range of PCs/devices on the "inside."

The remaining "outside" addresses could be assigned to a one-to-one static NAT mapping so that someone on the "outside" can hit that address and actually be talking directly to an "inside" pc/device.

For example, you can use the 69.34.10.33 address for your outbound NAT, then use .34 for an inbound FTP, .35 for web server, .36 for a VPN and so forth.

When you change to the NAT, make sure you tell the DHCP server that the inside Ethernet address of the router is now the "gateway," and give it the same DNS addresses to hand out to the clients.

You may also have to tell the router that the "Default Gateway" for the WAN interface is the .32 address.

So, the router sees the next hop/gateway as 69.34.102.32, but the clients see the (for example) 192.168.1.254 (whatever the address is assigned to the Ethernet LAN interface of the router) is the gateay for the clients, and all are using the two DNS addresses you've listed in the original post.

Good Luck

Scott
 

Cloud Strife

Banned
Aug 12, 2006
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Originally posted by: spidey07
right off the bat the gateway is wrong.

that is a network address, not a host.


How do you know this? The gateway IP isn't in the range of his given IPs.

I just pinged your gateway 69.34.102.32 and didn't receive any replies. Perhaps you were given the wrong gateway IP.
 

spidey07

No Lifer
Aug 4, 2000
65,469
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Originally posted by: Cloud Strife
How do you know this? The gateway IP isn't in the range of his given IPs.

I just pinged your gateway 69.34.102.32 and didn't receive any replies. Perhaps you were given the wrong gateway IP.

Basically just experience. I just skimmed over the post and really didn't read it, but that stuck out in a "not gonna work" kind of way.

But if you look at this...
Sub :: 255.255.255.248
gate :: 69.34.102.32

You can immediately tell that the gateway is wrong. a 255.255.255.248 mask means your subnets will be divisiable by 8 (256-248). So the subnets are 0,8,16,24, 32,40, etc.

with that mask the usable IP addresses are .33 - 38.

a router/gateway has to have a correct and proper IP address to function.
 

blazerazor

Golden Member
Aug 28, 2003
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Thanks Scott, I keep wondering about that NAT. So
So I make MY router STATIC with the first (xxx.xxx.xxx.33), fill in the sub, gate and the two dns numbers he gave me. ?THEN change my ROUTER IP to the gateway he gave me???

hummm, I was making my static one of the availible addresses. Looks like the local guy is coming to play with it today, oh well its in his yard any way. I just wanted to make it work so I looked good. (he seemed like a putz to me. throwing around 'power' words and acting big. oh, well)
 

blazerazor

Golden Member
Aug 28, 2003
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Originally posted by: spidey07
Originally posted by: Cloud Strife
How do you know this? The gateway IP isn't in the range of his given IPs.

I just pinged your gateway 69.34.102.32 and didn't receive any replies. Perhaps you were given the wrong gateway IP.

Basically just experience. I just skimmed over the post and really didn't read it, but that stuck out in a "not gonna work" kind of way.

But if you look at this...
Sub :: 255.255.255.248
gate :: 69.34.102.32

You can immediately tell that the gateway is wrong. a 255.255.255.248 mask means your subnets will be divisiable by 8 (256-248). So the subnets are 0,8,16,24, 32,40, etc.

with that mask the usable IP addresses are .33 - 38.

a router/gateway has to have a correct and proper IP address to function.

Your right spidey, That struck me too. When i was given the sheet of paper with the info. The third field was only one different. As the submask denotes want can change/be a variable.

BTW Cloud i slightly changed one of the addresses. (the 34, is really 32) and it was off of memory here the 3rd field for the gate address i kinda guessed, BUT it IS different from the rest. Thank you both for you input. The box isnt hooked up right now. Its off site. I was doing this friday afternoon and left at five unable to fix it. I will be out there this afternoon again if there IT can't do it. He was dead set one making all the Computers static ip's,... I brought the router he was like try it. I wanted to put a printer server in there too.
 

blazerazor

Golden Member
Aug 28, 2003
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Killer Spidey!, I just read all that post, i was in a hurry going to lunch and only read the beginning. I now understand what a subnet mask is actually doing. Learn something new everyday.