2 Servers Need Different External IP Address Behind Same Router?
May 22, 2012
I have a client that has 2 servers behind the same router. They have an IP block from Time Warner -> (x.x.x.18-.30) The router has the IP address of x.x.x.18. Server A (192.168.1.6) is setup with the forwarding of ports 22, 23, and 115 and can be seen with the ip address x.x.x.18. An external company needs to access the other server and is requesting an external IP for Server B (192.168.1.5) which need the same ports open along with 6200.What is the best way to set this up with what they have? The router is a Linksys WRT54G. Is there a way to set them up with a x.x.x.19 address from time warner? Is this something time warner will need to do?
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Jan 22, 2013
I have a EA3500 wireless router with the new style (smartwifi) firmware. I've scoured the web admin interface and can't find any sort of 'status' page that would tell me the external IP. I've looked through the support docs but they only show how to find internal/local IP.
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Jul 8, 2012
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
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Mar 24, 2011
I'm running a windows lan that connects 3 computers and a shared storage external hard drive. The whole network, including the external hard drive is connected by ethernet back to my adsl modem/router. I want to convert the external hard drive into an ftp server to enable secure file sharing on the internet by allowing remote access (for the purpose of downloading files) to anyone that I offer a username and password to.The external hard drive is a Western Digital World Edition (blue light)I believe it's a 2008 model.The adsl modem/router is a Billion Bipac 7300(G) RA.Is this doable?
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Nov 10, 2011
I have a cable modem internet connection and my cable modem is connected to an ASA 5505. The inside interface of the ASA has an IP address of 192.168.2.2 and is connected to a Linksys router's internet port which has an IP address of 192.168.2.1. The Linksys router then has a local area network of 192.168.1.0 and all my clients are on that network. Everything is working fine except in my ASA logs all the traffic shows up as the router's external address which is 192.168.2.1. I would like to see the 192.168.1.x address of the clients in the ASA firewall. I've tried making some changes to the Linksys router but that hasn't resolved it. Is there any changes I can make on the ASA to get this to work?
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Oct 13, 2010
I recently cut over from a WRT54G to a RV120W. I am having an issue where I type [URL] (for a server running on my network) in my web browser while on the internal network and it always comes back with the router login page. Basically it is supposed to go out of the router and then come back in on the public IP address and hit that server. There was a function on the WRT54G called "Filter Internet NAT redirection" which when turned off would allow this to happen. I am not seeing a feature like this on the RV120W
[URL]
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Jun 14, 2011
I have installed quite recently a cisco ASA 5520 replacing a linux based firewall I have only 2 zones ..one is internal netowrk and other external the internal network has web servers, dns and mail server all having public IPs Every thing is OK but i have seen that if I try to ping an external server for example [URL] i cannot ping says
[sylvan@kmdns1 ~]$ ping www.yahoo.com
PING eu-fp.wa1.b.yahoo.com (87.248.112.181) 56(84) bytes of data.
--- eu-fp.wa1.b.yahoo.com ping statistics ---
6 packets transmitted, 0 received, 100% packet loss, time 5010ms
but I can ping from systems which are outside my firewall perfectly with the linux firewall i had before i could ping perfectly to yahoo from any of my internal servers?
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Nov 28, 2011
I have a issue that i am at a loss as how to solve it. I have an ASA 5505 as my firewall. I have users from other companies who visit from time to time and are unable to use their outlook email to send messages. They can however receive messages without a problem. I also have a situation where users who use windows live to access gmail are unable to send messages.
I have narrowed it down to the fact that these uses are using ssl/tls to send the mails. I did some research and found out about the inspect esmtp setting in the ASA. I have disabled it and i still have to problem. I have also removed all outbound deny statements and still no luck.
Of note is that i can send emails without attachments. They take a long time to go out ( from minutes to hours) but eventually they do. Emails with attachments of even 10k do not go at all.
I was running image 8.2.3 and i downgraded to 8.0.5...still did not work...i upgraded to 8.4.3...still did not work. I am now back at 8.2.3.
My Firewall config is attached. I am at my wits end as to what else to try. The company has not renewed support for the device so i am on my own here!
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May 23, 2012
My IP adress has always been external. About 2 years ago, after reinstalling my windows,(I am using and used before reinstalling windows7) my IP adress started to work as it wouldn't be external. I couldn't host servers and stuff like that anymore.I tried turning off firewall, few other tricks but nothing changed.When I look information about my IP adress ,most of the sites see it as external.Also, when I call my interned providers, they tell me that they see my adress as external.
Some details :
-Internet is provided by a cable (not using telephone, TV or something else from those internet dealers)
-I am alone using this internet, no one else is connected to it.
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Jul 26, 2011
I use an online software host. They put print jobs into a queue and send them directly to my printer. I just got a new printer. The software host needs it's "External IP address" I have my internal IP address. I pinged the printer and got my internal IP address instead of the printer's. I am on a home wired network running through a modem and router.
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Oct 11, 2011
Whats the difference between DNS Server and External IP Address? When I dump Ipconfig /all into a .txt file I see that it shows three seperate values for the DNS Server. My question is, since ipconfig /all does not give an external IP address, are they the same? Why are theyre three?
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Oct 12, 2011
We once had a virtual server with two network adapters, one was internal and the other was external, and people could access it directly from the internet.
That server recently, died (someone put the .VHD file on a massive RAID 0 array, and that went boom), and I need to set it back up again. All the DNS entries appear to still be there, but how to assign the external IP to the network adapter. I tried Google, but my Google-fu must be weak today as I can't find anything useful.
It's a Server 2008 R2 machine running inside Hyper-V. Nothing's changed except for the new Windows install, it's running with the exact same VM settings, which I didn't touch except to add a new VHD.
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Mar 3, 2011
I have a home desktop, home laptop, and work laptop that I use. I have Ultra VNC setup on my work laptop that allows me to remote into that machine when I am traveling for work. I have always been able to use the external IP address (not private) to login into the machine with no problem. This week, for some reason, I can no longer do that. When I started doing some discovery, I noticed that when I have all 3 machines booted up at home that the exact same external IP address is assigned to all 3 machines. The internal IP addresses are all different as they should be.Shouldn't each machine have a seperate external IP address assigned as well? Or is this working the way it should? I didn't change any setting on my router or DSL model. But I think the conflict that VNC is having on my work laptop is that it has the exact same IP as the destination computer and it fails. I can remote in if I use the private IP address (192.168.x.x) just fine.
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Aug 19, 2012
We have a strange issue for one of our customers that recently migrated to our internet service.They are trying to vpn to an external ip address not controlled by ourselves. The issue is only on one subnet and isolated to Mac’s, PCs in the same subnet also work fine. They were able to vpn from the MACs before they migrated to our INET solution. They previously used a checkpoint FW for their outside NAT and firewall and now are using a failover pair of asa 5510s. I have packet traced out the firewall and there should be nothing blocked. UDP ports 500 and 4500 are open to the destination ips from the correct subnets. All other subnets with Windows PCs can vpn out to external ip without issue. The users in that subnet with the MACs can also browse internet fine so the routing and nat overloading is also ok
When they try to initiate a connection from the macs i can see the connection/xlate coming in from a source port of udp 4500/500 and also a destination of udp 4500/500 instead of a random source port. Just this evening we managed to get one device connected but no others. Would the fact that the source port is claiming 500 and 4500 stop the other macs using the same source ports at the same time to connect out? They are using the onboard mac vpn client, he can’t get the Cisco one working at the minute. [code]
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Nov 18, 2012
We have a Router with one External IP and a couple of VLANs. We have got a Teleconferencing Unit that needs almost every port known to man to work, so decided to get the unit its own External IP.
We have the IP now and how to get it in the router and then also to use it only for the Video unit (From outside straight through to Video).
Im comfortable adding lines to the router but just don't know what the lines should be.
The new IP's purchased are 116.199.222.200/30 (Only need to use one address, lets say 116.199.222.200). No idea what the subnet mask should be...
The router config below stripped of irrelevant stuff:
interface FastEthernet0
no ip address
!
interface FastEthernet1
[Code]......
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Sep 26, 2011
I have two FTP servers in our network, one that accepts inbound FTP connections from external clients and one that will be pushing out to external clients
Ideally i want these to both use the same external IP address, so should i configure a dynamic policy NAT rule for these two servers?
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Oct 24, 2011
When someone goes into a game (e.g. Minecraft) instead of typing an IP to join a game they simply type in [URL] and then the server gets added just the same as if you typed in an IP (123.456.789 sorta thing)
My friend used to do this on his website and it worked across multiple games, so people only entered his website and didnt need to remember the IP. if you type in [URL] in minecraft then u can add that server without the IP, thats what i mean.
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Oct 28, 2012
Our company uses a commercial copier monitoring package called FMAudit to obtain meter readings from our clients' copiers, and it uses a feed to send the readings back to us. We have used port 90 for this purpose.Due to a recent server crash and emergency reconfiguration of our network, we have moved our FMAudit central server from in-house to a hosted service, with of course a different external IP address.
Without interfering with our other systems, is there a way to redirect JUST PORT 90 to another IP address external to our own? I don't care if it has to happen at the router or server level. We are using Server 2003 and a Cisco 887VAW.
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Mar 30, 2011
How can I change my external IP address which is assigned
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Sep 15, 2011
The problem is that the PABX is sending out an internal address in it's INVITE messages and the ASA5505 isn't changing the internal address to the external address.We need> From: Calling Number <SIP: SIP Username@Public IP Address>However our PABX sends out> From: Calling Number <SIP: SIP Username@Private IP Address>. How to translate the internal IP address to the external IP address on an ASA 5505?
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Aug 22, 2011
I couldn't find a section for the 651.
Alright so I have an SSH server running on my network. I can successfully connect to it from a local computer using the server's internal IP address, AND I can connect to it from a remote computer using the server's external IP address (it's properly port forwarded).
However, when I try to connect to the server from a local computer using it's external IP address, I get a connection refused error. Is there something I'm missing?
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Sep 17, 2012
Accessing exteral address internally.
I have a mail server, with external access which works fine for external access thorugh our router (a 1941). I have a laptop which connects to a wireless network that is inside our router. When attempting to navigate to the webmail or use outlook, it cannot connect.
The laptop is configured to access the mail through the external path as it would be offsite occasionally.
I think the problem seems to be that the traffic is not leaving the router to come back internally. The laptop can ping the external address ok.
I read about something called hairpinning - is this what i need to be looking at?
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Jun 6, 2012
cant find server name for address...(server) : time out..15 nod is join to server(win2008R2) but new of nod is join for network error : computer name change....Note: This information is intended for a network administrator. If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:WINDOWSdebugdcdiag.txt.An error occurred when DNS was queried for the service location (SRV) resource record used to locate a domain controller for domain puya.org.The error was: "No records found for given DNS query."(error code 0x0000251D DNS_INFO_NO_RECORDS)The query was for the SRV record for _ldap._tcp.dc._msdcs.puya.orgFor more information
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May 11, 2011
I coulden't visit any websites and it gave me an "error 105" something. So i tried connecting my other comp to the internet cabel with the same result. So i tried to find a solution on the web (wierless internet still worked) and stumbeld upon a similar problem were the answer was to manually fill in an adress in the "internet protocol version 4" properties in the "local area connection" properties. I then noticed that i dident have the "Obtain DNS server address" set to automatically and that the other manual boxes were empty. I then turned the auto on an i had access to internet. Is this safe? Cause i read somewere that DNS server addresess were provided by the company that provide you your internet service, and that you can be redericted to a fake website that can get a hold of your account information on it
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Aug 11, 2011
how to track webhistory of a particular system using its ip address...can i remotely monitor the systems webhistory using its ip address.
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Jul 8, 2011
I have a WAG160Nv2 and I want to block specific external ip addresses from trying to get at our server that uses the WAG160Nv2 as an internet gateway. It's not immediately obvious if this can be done from looking through the config pages.
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Mar 13, 2013
We have an ASA 5505 and are changing ISPs so we'll be getting a new static IP address. How do I change the external IP address using ASDM? (I haven't done it in 5 years so I'm rusty and just want ot make sure.) The ASA and ASDM are up to date.Am i correct in that I only need to change the external address in the configuration under Interfaces, then under Routing - Static Routes - Gateway IP I just need to enter the new WAN gateway address?
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May 30, 2013
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
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Aug 24, 2011
We have a new Cisco ASA 5550 that I am trying to configure. We are currently using a borderware firewall.
We have multiple external IP addresses and I can NAT traffic from all except for our external interface IP address.
When watching the packets in the ADSM monitor if the IP address is our external IP then I see nothing unless it is ICMP. I can ping the IP address just cannot do anything else with it.
All the rest of our provided IP addresses can be NATed and work correctly.
Traffic for our external interface IP does show up when we use the borderware firewall so we know the traffic is getting here.
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May 29, 2012
Client is having 1 file server running small business windows server 2003. Server is not configured with domain, it is working only on workgroup. We have around 15 users who are using that server as file server only. Now my main question is do i need to configure DNS server in that server?we also have internet connection running (have problem in that also, will explain next time) with wireless router to connected with switch. So do I need to setup dns in server also or just put static ip (I prefer static then dhcp) & dns server from ip will be ok? If I put dns which I got from ISP, so will it create any problem with using those file from server?the second question is..
What IP address, Default gateway and dns address I should use for Server & also client pc.
router ip - 192.168.1.1
server ip - 192.168.1.10
Currently no DNS setupcurrent configuration - Server
IP - 192.168.1.10
subnet- 255.255.255.0
gateway - 192.168.1.1
dns - 213.42.20.20 (from ISP)
dns2 - xxx.xx.xx.xx (from ISP)current configuration - Client
IP - 192168.1.111(to 115)
subnet - 255.255.255.0
gateway - 192.168.1.1
dns 1 - 192.168.1.10 (File Server)
dns 2 - 213.42.20.20 (from ISP)
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Mar 19, 2013
My setup is as follows: as a part of a global network, I have two separate measurement stations collecting data in the field. They are working with some kind of embedded linux system and is running an FTP-server so that I can download collected data. I have some control over the stations, which e.g. means that I can select the port used for the FTP-server (default is 21).Unfortunately, for this particular set of measurement stations, they are connecting via FTP-over-radio-link to another station which is connected to my computer via a router (on the server-side) and I can only "see" their common external IP address. If I have understood this correctly, they can not use the same port for FTP traffic, right? The router used is some (for me) unknown brand with unknown capabilities, so I don't expect/want a solution at that end.Now, to my problem: as a part of this global network there is a custom software running on my computer that automatically connects to all the different stations to download and process the data. This software runs on any recent version of Windows, but I'm running Windows XP right now. There is no way for me to modify this software at this point (for the future, maybe, but not now), and unfortunately it has a severe limitation: it MUST use port 21 for FTP-connections.My first attempt was to set the FTP-port to 2121 for one of the servers and create another IP address on my client network adapter and try to forward port 21 of this new IP to port 2121 on the server/router side, but due to lack of knowledge and experience I did not manage to get this working fully.
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Aug 6, 2012
I have one dedicated IP issued to my home, along with another dynamic one if I need it(but I don't use it). I have a webserver, mail server, and name server up and running on a single machine exposed to the internet with my static IP. I have a domain name registered to my IP address. My webserver and name server work great, but I am having difficulty with the mail server. In order to have mail work correctly, I have been told that I need to get reverse DNS setup for my domain (something I had neglected to do). My nameserver responds to reverse lookups correctly when issued locally, but it looks like queries from the internet never reach it (I think my ISP catches requests upstream). I contacted them and they put a PTR record in for my IP pointing to ns1.mydomain.com. This all works fine, but the thought occurred to me that if in my hosts file I put my MX record in as mail.mydomain.com., any mail clients that do a reverse lookup of my IP won't get mail.
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Mar 21, 2011
the way i find mac address remotely is by using this methodarp -a ip addressshould give you a mac address of the following ipsunil pindoria
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