Cisco VPN :: 1941 Make VPN With Public IP Addresses
Mar 27, 2012
i have Cisco 1941(with security lic) and i have been asked to make a VPN with public IP addresses so there will be no info about internal networks. Other side has ASA 5520 and they provided me with 2 public IP addresses. i have done many different VPNs but this is first with public IP addresses and i cannot figure it out.So here is the question:
1. How to do it ? (maybe some example)
2. Do i need two public IPs to do it ?
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Jan 24, 2013
We've got vpn-concentrator and 15 offices with 881w and 1941 isr connected vo it via ipsec. Our Asterisk is placed behind this vpn-concentrator in local network, so all traffice goes throung vpn tunnels. Is it possible to make QoS rules using just destination IP address of our Asterisk server?
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Oct 23, 2011
I have a 1941 router tt needs to be setup with the range of WAN ip addresses ip nat inside outside don't allow me to use it..How can i configure on the router to ensure from outside i'm able to access to firewall (129.2.1.2) ?
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May 4, 2012
I have 5 workstations with 2 servers but the backup server (black) is shut down intentionally.I have 1 cisco gigabit unmanaged 8 port switch and 1 cisco 1941 vpn router.The cisco 1941 vpn router is configured for IPVPN connection to other branches.
Challenge:
1. Configure NAT to enable the 5 workstations to be connected to the internet thru the router to the ISP.
2. Configure NAT to enable the server to be accessed from outside using the public IP address provided by the ISP. [code]
Verification:
1. I can ping other pc on 10.71.5.0/24 network.
2. When I typed in the ISP's public ip address on the browser, i got into the modem user interface for configuration.
I still can't connect to the internet. When i do tracert, it stops on the 192.168.15.1 hop and didnt continue. This shouldn't be the case since i want to connect using the GE0/1 outside port for the internet.
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Sep 5, 2012
i now learning about SSLVPN, and i already install license in 1941 with SSL and security9 License, i learning how to make a gateway for SSLVPN full tunnel, but i meet an obstacles, when i go to my wan ip address https://wan ip address, the browser give this
SSL connection error Unable to make a secure connection to the server. This may be a problem with the server, or it may be requiring a client authentication certificate that you don't have.
Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error
[code]...
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Oct 24, 2011
Is it possible to have more public addresses to more internal addressees? I have an internet provider which is in control of my router and he is telling me it is not possible. It's a Cisco router and I have static IP address.
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Jan 4, 2011
how can i make my PC as public IP? do i need to wrt som servlet program 4 it?and how to mak my mobile as public IP by setting its domain?
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May 23, 2013
I've got a Cisco 1941 setup working fine for Cisco Anyconnect. Clients can connect to local resources fine. The issue I have is I need the remote clients to access a third party IP address but to do so they must do it through the VPN. At the moment only local resources are accessed across the vpn and if they need internet they use their own internet connection they are connecting with.I've added the below to make sure traffic going to the IP is going across the VPN.
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Nov 23, 2011
I would like to configure an 877w I just bought. It's connecting to a UK ADSL2+ link.I'm a penetration tester and I want to put the Cisco router in front of my existing firewall which has an IPS on it, so that it doesn't get in the way of port scans and vulnerability scans. My ISP has issued me with 14 usable addresses a/240 subnet and basically I want to be able to use the route with just the public IP addresses. I have configured Cisco routers before, but never with this type of configuration. It's always been single public IP address NAT'd through to one or two internal LAN's.
It will be nice if I could assign the wireless and fast ethernet ports to the same VLAN using the public addresses. I don't want to use DHCP I'm quite happy statically assigning IP addresses to the computers wireless and LAN interfaces. I am reasonably certain this is possible because not sure how to do it and a little busy at the moment carrying out penetration tests.
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Feb 29, 2012
I just bought an SA520 to replace my existing FW.
The thing is that I have private IP adresses on my LAN, and I have been issued a public IP network for my DMZ by my ISP.
Meaning I want to NAT my LAN but not my DMZ, but I can't seem to find a way in the 520 to do that. I can only find the oprion to turn off NAT all together.
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Jan 22, 2011
I need to change from a SLAN (hidden SSID) set-up to a set-up where anybody is free to see my SSID. My friends need to access my internet connection on their phones but cannot find the SSID.
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Mar 11, 2013
If there are any small business routers that offer one-to-one NAT? I have several public IP addresses assigned to me by CenturyLink. I have two servers that provide email and web hosting for two different domains. I want to put the client machines on one VLAN (VLAN Z) and assign it a public IP address (to keep server traffic separate). I want to put each server on its own VLAN (VLANs X & Y) and assign each server its own public IP address. I need the router to be able to provide a firewall and port forwarding for each VLAN. I also need to be able to route traffic between VLANs so the clients on VLAN Z can access their email and the websites on VLANs X and Y. I also need to be able to route DNS traffic between VLANs so each server can provide name resolution for their respective domains.
So, is this possible with a small business router or do I need to look at something different? I'm fairly certain this configuration is not possible with my current Cisco RVS4000. What it boils down to is I need a router that is capable of having multiple public IP addresses on the same interface and to forward those public addresses to private VLAN subnets. This would be one-to-one NAT if I understand it correctly..
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Apr 21, 2013
I am trying to figure out how this works. I have an ISP device that connects to my 1841. ISP and fa0/0 hold the /30 WAN addresses. Fa0/1 hold one of the public IPs, lets say 1.1.1.1/29. Then the outside interface of the ASA holds 1.1.1.2/29. Now I have two routes in the 1841, one for default route going back to the ISP device, and a route for the 1.1.1.0/29 network going to the ASA.Now I have 4 more publics I can use 1.1.1.3 - 6. I do not want to assign these IPs to the servers, but yet just NAT them. I know this is possible, but cant figureI took an internal host and did a one to one static NAT from private to public. Packet tracer says my NAT rules are ok. Allowed all IP traffic for testing and still can't ping the server.
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Aug 22, 2012
The client has a Cisco RVS4000. There are 3 Internet devices need to be accessed from the outside and will use one public IP for one device. I don't see any options to setup on Cisco RVS4000 to do 3 NATs. If Cisco RVS4000 doesn't work in this situation, which router will do?
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Sep 25, 2011
I have a customer thats got a Linksys router now, that has a DMZ port.The DMZ port is configurede to it routes the extra public ip-adress to the DMZ port it has.At the DMZ port they have another router connected, where they routes the public ip-adresses på some other devices.How can i make this setup on a Cisco ASA 5505 (With the Security Plus licens)What i have to do is to replace the Linksys router, and make it so, so it works like it was before with the Linksys.
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Nov 2, 2011
I just thought if it's possible to make sure that only approved IP addresses for each of divisions of a company can be used.How can I assign for a port one/more public addresses and be sure that only this port is using it/them. Thing is I have only one 24 bit public Network ID provided to me by ISP. One IP address of the range is used for ISP's gateway. So I have 253 addresses to be distributed among divisions. However to avoid IP address conflicts I have to be sure that only dedicated for a division IP address/es is/are used by the division.
Router is 2821.
Switch is 2950.
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Sep 8, 2011
Is it possible to two or more public IP Addresses bound to a Cisco ASA 5505 running 8.4(2).
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Oct 10, 2011
I have this motorola sbv5121e modem. I can connect one PC to it directly. When I try to connect a secont PC, via a switch, it won't give out 2 IP addresses. Moreover, I see that the one IP address it does give out, is a public one (like 22.x.x.x). I'm on XP and show the addresses with ipconfig. Is this modem defective hardware-wise, or is some setting internally wrong? How can I see what the DHCP server does?
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Feb 20, 2012
Is it possible to have multiple public IP addresses that are from different subnets going through one router? I have been told that this is not possible with most routers and that I would have to spend a lot of money on a router to be able to do it. I am still not totally clear on what defines a subnet even after reading up on them. What I am trying to achieve:
-My office has 10 computers.
-All would be connected to one router.
-My internet service provider has provided me with 10 public IP addresses, that are all very varied (which I asked for)
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Aug 3, 2011
I have a customer that has an RSV4000 Router. The customer has also purchased a block of 5 usable public IP addresses. I need to be able to assign these public IP addresses to printers either by configuring a static IP on each printer directly or thru IP mapping or some other method. Does the RSV4000 support using multiple public IP addresses and if so what configuration is needed in the router for the printers to be seen by the outside world.
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Dec 2, 2010
I'm currently replacing my ASA 5505 with a 5510. I have a range of public IP addresses, one has been assigned to the outside interface by the setup wizard (e.g. 123.123.123.124 ) and another I would like to NAT to an internal server (e.g 192.168.0.3 > 123.123.123.125). On my asa 5505 this seemed fairly straigh forward, i.e. create an incoming access rule that allowed SMTP to 123.123.123.125 and then create a static nat to translate 192.168.0.3 to 123.123.123.125. Since I've tried to do the same on the 5510 traffic is not passing through so I'm assuming that the use of additional public IP addresses is not handled in the same way as the 5505? I also see that by default on the 5505, 2 VLANs are created, one for the inside and one for the outside, where as this is not the case on the 5510. Is the problem that VLANs or sub-interfaces need to be created first? I'm doing the config via ASDM.
Everything else seems to OK i.e. access to ASDM via 123.123.123.124, outbound PAT and the site-to-site VPN.
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May 26, 2011
I have set up a private domain network at home. I have a domain controller, a DNS server, and a DHCP server all running on one Windows 2003 Server machine. I have about 10 other machines around the house, getting their IP addresses from this DHCP server.
I have a Netgear WNDR3700 router.
I am about to get 5 public IP addresses from my ISP, and I would like to make some of these machines publicly accessible (while still accessible from the other machines in the network).
I found this link that says on my web server (one of the public machines), that I should use a second NIC and set that up to connect to my router (and get a private IP address from my DHCP server).
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Sep 28, 2010
I currently have DCHP server set up on my new 1141N. Everything works great, but I wanted to know if it were possible to make the DHCP server only hand out ip addresses on the wireless connection? Currently the AP is giving out ip addresses from the pool to wired and wireless pc's.
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Nov 4, 2010
I purchased a wireless bridge D-Link DAP-1522 (IP fix 192.168.0.50) to share the Internet connection to two remote devices: WD TV Live HD (IP fix 192.168.0.52) and a Samsung BD P2500 player (IP fix 192.168.0.51: to try the BD-Live) but when I plug it into my network I have an IP conflict and I can not navigate anywhere, even by the computer which control the Netgear router (IP 192.168.0.1 DHCP range 192.168.0.2-192.168.0.49).
I tried with all fixed IP (192.168.0.xxx Subnet mask 255.255.255.0 Gateway 192.168.0.1 DNS 192.168.0.1), but nothing to do, I have the same problem: after a few minutes after plugged the network cable into BD player the network falls.With wired connection (10 m of patch cable!!!) Samsung BD P2500 have no problem (DHCP and IP fix).
Then look closely in the information relating to devices connected to the Netgear router I noticed that all devices connected through the bridge DAP-1522 have the different IP but same MAC address and I think this could be the cause of the problem that creates the Blu Ray when it's connected to the network through the bridge, because he is not identified with any name but only as UNKNOWN as the bridge (a problem that WD Live not seen: same MAC address but is identified by name as WDTVLIVE).
How can I make the MAC addresses from the bridge will be recognized separately from my router/modem Netgear?In the settings of the bridge I noticed that you can enable or disable MAC address cloning, but if the off I would expect that cloning was not done and instead all the devices are identified by the Netgear router with the MAC address of the access bridge.The DAP-1522 masked the MAC address of device that are plugged into bridge.The router has the latest available firm while the original bridge has version 1.20 (the penultimate version available).
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Nov 27, 2012
On an 887VA running 15.x IOS, is there a way to support both public and private addresses on inside vlans? The outside interface is public static ip, so the requirement would be to not nat anything if coming from inside vlan10 but nat if coming from inside vlan20.I didn't think this was possible since the outside interface would have to use an outside nat command that would not be ignored for traffic coming from vlan10.
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Aug 9, 2011
I have a Netgear ProSafe VPN Firewall FVX538. But I also have 10 Public IP Addresses that I will like to setup for three web services. So how do I set this up. With multiple routers. Or can my Netgear FVX538 take multiple Public IP Addresses to the same ports. If not how can setup multiple routers. one being the main one.
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Dec 8, 2011
I know the CSS is too old but I have one in production environment and I was asked if it is possible to CSS to make NAT from inside addresses and translate them into one external IP address to diferent kind of communications, for example: 172.16.4.9 and 172.16.4.10 (inside addresses) should start connection to external IP addresses destinations 50.50.50.50 / 60.60.60.60 70.70.70.70 / 80.80.80.80 and so on, the default gateway to those Servers is the CSS and I would like to know if it is possible that all connection to external world to be translate into one IP address 172.16.4.100.
My CSS is 11503
Version: sg0810106
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Jul 28, 2011
I have a request to establish a site to site VPN with a customer. While collecting the information I give them our local network subnet which is a private subnet (192.168.5.0). They asked me if I could give them a public address instead. They can not work with the 192.168.5 subnet. Is this possible?
My side of the VPN is an ASA 5505 running 8.2(2). The other side i believe is a Checkpoint.
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Oct 8, 2012
In setup for old RV042 (V1), when updating / adding Mac addresses, the table is always sorted by IP addresses. But in the new oneRV042 (V3) I have, even with latest firmware 4.2.1.02 the list is random, thereby increasing the chance of user entering DUPLICATE IP addr with diff Mac addr. That will result in conflict.If the firmware sorts the DHCP entries by ip addresses, user would be able to catch duplicate ip errors even if the system does not flag the errors. All Cisco smart engineers can you all get the dhcp entries SORT by ip addresses.
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Apr 2, 2013
One of our vendors requires using a public ip address to setup a site-to-site IPSEC vpn. We only have one public ip address and that will be used for the vpn endpoint and for internet access for the local network. I've setup policy NAT from our local network to the outside interface. I'm also using the outside ip address for the crypto map. The tunnel setups successfully and the Tx count increases anytime I try to ping the remote network, but the ping fails and the Rx count does not increase. According to our vendor, we should be able to ping the remote network and connect using port 443. When trying to connect using port 443, I see a SYN timeout in the logs. I'm not sure if the problem is on their end and they're rejecting our traffic, or if something is misconfigured on our end. I'd like to make sure that I have everything configured correctly before I go and point fingers at them.
Local Network - 10.10.9.0/24
Remote Network - 20.20.41.0/24
Remote Peer - 20.20.60.193
.ASA Version 8.2(5)
!
hostname ciscoasa
[code]....
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Jul 10, 2011
i have an ASA 5520 8.4(1) setup as follows
public wan
|
|
ASA-- public dmz
|
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private lan
i need to allow https traffic to a server in the DMZ that will have a routable IP address will just an ACL suffice ?which interface do i apply it to ? wan or dmz ?i dont need a NAT since the DMZ is a routable space?
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Feb 22, 2012
I have a Cisco 1941 which has several Cisco VPN clients connecting to it which all works fine. The details of the LAN and VPN clients are as below:
Cisco 1941 LAN : 172.16.1.0 255.255.255.0
VPN Clients : 192.168.5.0 255.255.255.0
As mentioned this works fine but I'm about to setup a point to point VPN with from the above Cisco to another site which isn't controlled by myself and the remote side of this point to point VPN will only allow connections from the "172.16.1.0" subnet to communicate with it.
The issue I have is that the Cisco VPN clients also need to communicate with the remote side of this point to point VPN but they are obviously coming from the "192.168.5.0" subnet. Is this possible and where to start with this that would be fantastic.
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Feb 18, 2011
I got 2 DC Cisco MWR 1941 and 3600, I do not know the reason why when I set up IP NAT to 1941 does not work but if I do it in the 3600 if it works.
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