Cisco WAN :: ASA5505 And Router 3825 - Double NAT With Port Forward?
Apr 26, 2013
This is my Cisco LAB environment used for study but also in production for daily use. I am trying to setup a double-NAT network with just one IP from my ISP through the ASA & 3825 going to (2) end nodes and multiple ports for port forwarding. It is currently working but only as simple PAT and I cannot initiate FTP from the outside. removing the router, but this is my study LAB and it's a bit unconventional for learning purposes. I attached the diagram and need parts of the config.
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Dec 30, 2012
I am a total Cisco novice who has just had a ASA5505 installed to replace a linux freeware firewall (smoothwall).I'm told that the 5505 can't port forward traffic (e.g. ssh) from two external IP addresses to two internal destination machines via the same port # (22 in this example).
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Jun 5, 2013
I'm fairly new to Cisco products am in the process of developing my network knowledge on a deeper level. I have a 3825 with a HWIC-4ESW and I'm struggling to fully understand how the two "see" each other. I've setup a V LAN with a layer 3 address on the HWIC and added the switch ports to it. This seemed to allow devices connected to the switch ports to talk to the built-in router ports. I thought this was all making sense until i applied an access-list to the router port. It's a simple ACL i'm just using for testing and the only thing it does is blocks telnet from anywhere. I know the ACL is setup properly because if I connect a device directly to the router port i cannot telnet to the port. However, if i connect a device to one of the switch ports, i am able to telnet to the router port successfully.
It seems that I'm missing something with how traffic flows from the switch port to the router ports and how the two "see" each other.
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Oct 12, 2012
Is it possible to create a service which will forward public port 9010 to an internal IP address with port 23?First of all, I do not like to open the public Telnet port to the inside so I would use another public port and second my ISP does not allow some public ports beneath port 80?
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Sep 21, 2011
I've a network with 28 computers and 2 servers. Each server have a double Gbit port configured in Load Balancing & Fail Over.Now, I want to buy two Cisco's Switch SG 200-26 and I would know the best way to connect them and if it's possible to interconnect them with more than one cable to share the trafic.
1. Is this following solution a good one (does the link between swhitches will work when computers will access to servers) ?
2. Is this next solution possible ?
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Apr 23, 2012
Can switch do a port forward without a router just plane switch to port forward to another network crossing the internet.
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Aug 22, 2011
[URL]I want to port forward so my family (not in my home) can play Minecraft on my server. What values should I type?
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Apr 8, 2013
I have a 857w adsl router, I have configured it to connected to my ISP and i get a dhcp address from them, and I have dhcp pool to assign ip addresses to wireless or LAN, i have nat overload on a BVI . I am now trying to get one of the LAN port which has a device of 172.16.0.3 to be accessible from the outside world, but it will not let anyone connect to it.
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Feb 13, 2012
I need to forward port 2875 from any public address to an internal address 192.168.20.103. I am not getting something right because it will not work. Below is my config.
Current configuration : 11012 bytes
!
! Last configuration change at 23:30:24 UTC Fri Apr 12 2002 by cisco
!
[Code]....
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Feb 14, 2012
I have a belkin f7d4302 v1 and I can't get it to forward my ports.
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Jan 19, 2013
I have unchecked 'Block Anonymous Internet Requests” but then also I am not able to forward ports like 80 and port 443.
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Jan 28, 2013
i've a cisco asa5505 on adam 6.4 and a dvr i would like to forward the ports 9000 and 85 in order to monitor the dvr from outside?
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Nov 26, 2011
I am new to the ASA series and I am at a complete loss as to why I cannot configure this router to forward SMTP and RDP traffic to an internal host.
The packet trace tool in ASDM shows complete end-to-end connectivity for RDP but it still fails to connect from outside. This is my config file, what I need to change in order to make it work?
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Feb 13, 2013
I have a Cisco DPC3825 and i don't know how to port forward it i want to port forward so i can host my server without hamachi?
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Aug 15, 2011
I'm trying to forward ports for game connections. For this particular game, I'm trying to forward port 7777My ports aren't forwarding according to: Open Port Check Tool - Test Port Forwarding on Your Router and Open Port Check Tool[CODE]
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May 15, 2013
I have my router set up and life was good. i now want to forward a port. i go into apllications/gaming put the application name, the port i want to forward and click enable. Save changes and i get a changes save message. When the browser goes back to the applications/gaming screen no port shows as being forwarded. If i go to canyouseemenow.org the port shows as being closed.
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Aug 7, 2012
Windows 7 64 bit / Linksys EA3500 / (2) FosCam F18910W IP Camera’s I just installed a new EA3500. (Should I have purchased the 4500)?I need to set up port forwarding to enable wireless use of the IP cams with my iPhone. I had this all set using my former router, but it died.how to to port forward this Linksys EA3500?
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Feb 12, 2012
i Have a router called Linksys BEFSR41v3 i need to port forward a port but it just wont open i loggerd in on my router using 192.168.1.1 after i click applications & gaming started the port on 100 and ended on 100 used ipconfig in cmd to find me ipv4 adres and putted in ip adress box also both protocol are on and i clicked the enabled function also i tried also got a static ip i used canyouseeme.org to cheak if my port is open it still says its not open.
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Nov 25, 2011
Having a devil of a time trying to forward a port on my router. Did everything instructions said, but it still doesn't work. What can I do.
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Dec 20, 2011
I attached an Iomego Home Media network hard drive to my Linksys E3000 router (via ethernet cable). Before setting up the remote access on the Iomega, I forwarded the ports that it wanted (443 and 21) to the static IP of the Iomega. I checked to see that they were open using yougetsignal.com and they were both open. After setting up the remote access on the Iomega, the 443 port closed and I cant even get into the "manage storage device" page for the Iomega. Iomega uses TZo for the domain names. They tell me that the association is made between the name and my public IP address. My router is out of warranty since Sept, so Linksys wont give me the time of day. I contacted my ISP and while they block a couple of ports, 443 is not one of them.I've installed the latest firmware (1.0.04 - Build 6). Reset and rebooted numerous times, Port 443 remains closed.
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Sep 19, 2011
i want to open portforward to utorrent in arouter but i cant open the addres of the router lookand when i go to local area connection status /status/detailsi found number of ip but there is no gateway i take whole ip and put them in browser and its dont open but the last friday i wake up in 3am run cmd and put ipconfigi found the gateway 192.168.2.45put it it in browser its open want username and pass i know them but i see lets doit next day going to bed next day the gate way reverse to the stupid gateway in in the pic i cant use aprogram to open port as i cant knowing my router mode
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Jan 25, 2011
Some routers are able to forward to broadcast directly by sending a port to 192.168.1.255, other's I've been able to trick by forwarding to 192.168.1.254 and then editing the arp table with 192.168.1.254 <-> ff:ff:ff:ff:ff:ff. Is there any way I can edit the arp table of the E4200? Is there a way to telnet in or get a console connection?
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Sep 2, 2011
I encounter a problem setting up port 80 forwarding on WRT54g router.
Configuration:
- Numericable modem
- WRT54G router : portforwarding configured, accepting anonymous internet traffic, no DMZ, no port-triggering... in fact everything is fine except for ports 80/443
- Linux Ubuntu server + Apache2 listening *:80 and/or *:15001
1/ Situation 1: Apache listening on server's *:15001
-> Accessing from Internet (outside LAN) works very fine.
-> Portforwarding of router:15001 to server:15001 (TCP) works fine.
2/ Situation 2: Apache listening on server *:80
-> Accessing from Internet (outside LAN) FAILS.
-> Portforwarding of router:80 to server:80 (TCP) doesn't work. Diagnostic using the client machine's firewall tool showed the request doesn't get any return... no traffic back at all.
The system being fully operational when using port:15001 shows the problem does not come from server configuration.I still have to try a bypass of my router by plugging the modem directly on the server eth card.
-> If that works it would definitely prove the problem comes from the router, precisely the portforwarding feature as applied to port:80.
My guess is the following:
- As WRT54g router's remote administration interface is precisely set to listen 80/443 ports.
- As I still did not disable remote administration as I need it, but I will come to such extremities (very soon in fact as despair is gaining me
- Looks like WRT54g is unable to forward port 80 as this is it's remote administration port. You can set it up, but it just won't work, and there's no warning
Solutions?
- Disable remote administration? (will it work ? cause I would not risk to disable it for nothing...)
- Have remote administration litening on different ports than 80/443?
- Is my diagnostic correct ? (at least, does it seems to be...)
- (shall I get another device? Update to alternative firmware project?)
PS : I could be asked for ifconfig/netstats/hdw-fmw version, I would post later as I do not have access now.Looks like to me it is recurrent issue on WRT54g (maybe I'm wrong and just an **bleep** in LAN/WAN configuration which is highly possible)
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Mar 19, 2007
I am trying to set up a web server behind WRT55AG router. I have read many forums where people are having the same problem, but none explain how to fix issue. The router will not forward any port to the server. Any attempt to access the server from outside my local network just brings me to the login screen of the router. I have tried port forwarding port 80 and 10080 and both do the same thing. Also, I have the firewall, remote management, and UPnP turned off
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Nov 7, 2011
I have one server 172.16.0.100 and i nat this server to a public ip X.X.X.5 and i open RDP for this public ip.Now when i access Remote desktop on this public ip x.x.x.5 it open perfectly.Now my senario is that i want to open a http url on port 5555,server ADMIN open port 80 for this URL on LOCAL lan(http://172.16.0.100:80)So how can i map port 5555 to port 80 on ASA 5520.so when i hit URL [URL]
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Nov 28, 2011
i am trying to port forward my router so that i can run a minecraft server. When I put in th port number and save the changes, it brings me to a screen that says my changes have been saved yet when i go back to the page they haven't. I have tried deleting the cookies on my browser, using another browser, using another computer, and hard resetting the router for ten seconds. None of this works.
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Aug 20, 2012
I have the following setup: Private network <-> SW <-> CISCO VPN <-> ISP MODEM
I have configured VPN part and is working correctly. I have a computer in the private network at static address 192.168.1.100 and an application is running on it on 8100 tcp port for clients.
Now I need to connect from the Internet to the application on 192.168.1.100 on port 8100.
How to configure CISCO router to forward traffic coming in tcp port 8100 to machine 192.168.1.100?? ISP Modem is going to handover all the traffic to CISCO device.
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Jun 12, 2011
How do I port forward on a SAGEMCOM SE567 router to be able to view my DVR from a remote location?
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Aug 13, 2012
I'm using Cisco Connect Cloud to connect to my E4200 router. I wish to open my NAT type as currently its moderate on all games.Where the hell is the area to add the port ranges?? Is it even an option on the new connect cloud? If it is, it doesn't make it very easy to find. Would be allot easier if you had a tab/app for "Gaming/Applications" like you did previously.
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Apr 5, 2012
A while back, I had my own minecraft server running. I had everything working and it was flawless. Then for some reason it just stopped working. I was Unable to open ANY PORTS. I did happen to try 65 - 110 and 254 - 210, as well as 12, 212 and 122. I dopnt know what happened but i have been searching everywhere on the internet (roughly 3 months)
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May 17, 2011
BEFSR81 will not save port forward info. I am trying to setup port forwarding for xbox (53, 80, 88, 1863, 3074), I click on enable to the far right and then click save at the bottom. It says settings are succeful, will return in 5 seconds. When it returns everything is zeroed out.
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Sep 27, 2012
I think i have tried everything i could think of to forward port 5900 with no luck. iIhave e4200. it is for RealVNC application. I followed steps from here: i have windows 7 and nortonn internet security. i disabled the firewall and added a rule to forward port 5900 in windows but did not work either.
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Feb 17, 2012
I've been configured my device to forward FTP service to my server, however, I can't access this service outside from my network. I used Single Port Forward and not worked, after, I've used Port Range Forwarding starting in 20 to 21 and not work again.I've sniffed my computer and I've found just 3 outsides packages without response.I've tried with directly IP ADDR and DYNDNS ADDR, but neither one or other worked.
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