Cisco Firewall :: ASA 8.3 Port Forward Denied By ACL
Jan 1, 2012
I consider the NAT mechanism to be quite straight forward, but although the firewall ACLs allow the traffic, it is being denied. The ASDM log and packet-tracer indicate the problem being an ACL.
# the internal resource
object network mabe-mbp
host 10.0.0.36
!
# these are ALL of the rules on the outside/inside interfaces
access-list outside_access_in extended permit tcp host 1.2.3.90 any eq 12380 log disabled
access-list outside_access_out extended permit ip any any log
access-list inside_access_in extended permit ip any any log
access-list inside_access_out extended permit ip any any log (code)
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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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Sep 20, 2011
I always seem to have problems when trying to configure port forwarding on cisco routers. I've even tried the instructions I have for a cisco 1811, but no luck. I have a cisco 871 and a computer that has VNC installed on it. I want to be able to access that computer from out side the network using the external ip address and port 5950. People outside the network will be able to open vnc viewer and type in *external ip address*:5950 and it will be directed to the computer with a static internal ip address of 10.12.0.10. What commands do I use to do this?
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Nov 20, 2012
My internet works. However port forwarding does not work. I want to port forward from the outside to inside obviously. I get an error in my log file which Ill show you and then I will share the running-config I have tried using this method found elsewhere.
========================================================================================================
ATTEMPTED CONFIG
object network inside-host
host 192.168.100.4
nat (inside,outside) static interface service tcp 3389 3389
access-list Outside-2-Inside line 1 extended permit tcp any host 192.168.100.4 eq 3389 log informational interval 300
access-group Outside-2-Inside in interface outside
[code]....
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Jan 19, 2013
I'm trying to do a normal port forward on a ASA 5505 with 9.1(1) and it is not working as it should.There are two ports that I want to forward, TCP 32000 and TCP 32001, from the outside interface.I tried a Auto NAT that gave rpf-check drop. [code]
I have tried diffrent configurations on this for several hours now and I cant get it to work.Could this be asymetric NAT with the dynamic rule? How can I troubleshoot this in a smart way?
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Oct 11, 2011
i´m trying to make a traditional port forward (http to http) on our new asa5510. Previous releases off 5505 and software prior 8.3 was no problem. Could someone tell me how do it in new 8.4 version? I ám a rookie on the new ASA series!
If nothing makes sense in this configuration please give example on how to do it correct. The object on the inside is SRV02 wich is running a webserver on port 80. So i want to open upp for http on outside interface and forward that traffic to srv02 (inside webserver)
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Sep 8, 2010
Successfully creating a port-forward in ASA5510, ASA version 8.3(1) ASDM6.3(1)?I have spend hours now trying, but I'm still unsuccessful.What I want is a simple: "if this particular ip-adress hits the wan interface on this tcp-port redirect to this inside ip-address on this tcp-port.I have never had any trouble on any other firewall creating something like this, but the ASA is killing me.
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Sep 26, 2012
I have a cisco asa 5520. i need to forward telnet to a router on the inside interface. Here is what i have done so far but it doesnt seem to be working.
I have created an access-list that looks like this:
access-list 102 extended permit tcp any host 10.10.60.2 eq telnet
But when do this it still doesnt forward my request to the router at 10.10.60.2 . So just to explain what im trying to do. I use Putty, i am putting the outside interface IP into putty, selecting telnet and opening the session. i need the outside interface to see this request and know to forward port 23 to the router on the inside interface with IP 10.10.60.2. The ASA is running version: asa842-k8.bin
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May 7, 2013
i can't do it with ASDM and try to use command but still fail
nat (inside,outside) source static inside-10.18.20.162 4F-1.1.1.2
it is working fine for the above command if there is more than one public ip, in case 1.1.1.1 is for firewall interface public ip?if i have only one public ip and i would like to forward http traffic to my internal network? how can i use command to do that?
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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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Dec 27, 2011
I have one public IP address but multiple local servers that run on the same port. I cannot change the port the clients use to connect to this server, so I can't do a port map in my NAT router. The solution I had in mind, is to filter on source address. If a client from public IP X.X.X.X connects to port Z, I want it to go to internal server 10.10.10.10 and if a client from public IP Y.Y.Y.Y connects to port Z, I want it to go to internal server 10.20.20.20. Is this possible? I'm using an ASA5510 but I could also switch to a 5505 for this.
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Jul 25, 2011
I'm having a problem forwarding port 1723. What i'm trying to do is to use VPN to access my server pc and I don't want to use the VPN software that is in the router. When I telnet the port it goes through but when i try to access it outside of the office I can't get through. I've been using [URL] to check port 1723 and I get this:
Error: I could not see your service on XX.XX.XX.XX on port (1723)
Reason: Connection refused
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May 4, 2011
I have a couple of ASA 5505's which work fine for what they are doing VPN and all that - we have 1 DLINK DFR-700 Firewall left and I need to get a new ASA to replace this since it is old.
All this box really does is port forward external clients to 1 address on the internal lan for client software updates. Any example configs?
So lets say we have client a with IP 1.1.1.1 and client b has 2.2.2.2 - at the moment this is what happens client a and b come in through http and get mapped to the internal http server 10.10.1.2
So I need to setup about 100 clients which can come in through http only - get mapped to the internal IP and also keeping the internal server to be able to access anything outside.
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Nov 18, 2012
Region : Italy
Model : TD-W8968
Hardware Version : V1
Firmwae Version : latest
ISP : telecom italia business on ipatm
How to Forward an external wan port like 49150 to lan ip on port 22?In the control pannel I can set only one port , and this port will be the same where the connection will be router to the lan ip ,therefore If I set the port 22 , the connection will be natted to the 22, but how to set a different external port to a specified different lan ip port?
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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 18, 2012
I have only recently noticed a HUGE decrease in my Utorrent speeds, so i thought i would have a gander and lo and behold.apparently the port Utorrent uses wasn't open. Now, i have tried about 10 different port numbers, made sure Utorrent is being accepted by Norton 360 Firewall,followed complicated directions to (i think) foward ports, and also follow directions to open a specific port.Nothing has worked so far, Utorrent still comes back with a port closed error.
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Oct 6, 2011
I configured an ASA 5505 a couple of weeks ago. Every thing is working properly except it sends irritating messages to the syslog server. Her is an example of the message:
%ASA-2-106001: Inbound TCP connection denied from 195.215.221.56/80 to 10.70.13.90/252 flags PSH ACK on interface outside
%ASA-2-106001: Inbound TCP connection denied from 195.215.221.56/80 to 10.70.13.90/2252 flags ACK on interface outside.
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Jan 14, 2013
I'm having problem getting ICMP echo monitoring on outside interface to work. I've set: icmp permit host monitoring_station_adress outside but I still get:
%ASA-3-313001: Denied ICMP type=8, code=0 from monitoring_station_adress on interface outside. I'm trying to directly monitor ip on ASAs interface outside.
I have access-group tied to "in" direction on interface outside. Do I still have to put "permit icmp" rules despite the fact that icmp permit outside command is set?
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Feb 19, 2012
I have a website that is hosted by our company, but when the staff goes to the outside address of th website it gets denied by ACL thus page not found.
3Feb 20 201211:25:23192.168.3.5752928our Extrenal IP80TCP access denied by ACL from 192.168.3.57/52928 to inside: our External IP/80,OUr external ip is also the ip of the 5505.
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May 6, 2012
I have ASA5505 configured with internal network as 192.168.15.0 and default gateway 192.168.15.1 From the inside network, i'm able to access internet and able to ping all website (enabled ping). and all internel network devices can ping each other. Except i cannot ping my gateway (ASA5505) 192.168.15.1. I'm continously seeing this message on the log, when i tried to ping.. How to fix this?
Denied ICMP type=8, code=0 from 192.168.15.xxx on interface inside
replace xxx with my network devices that try to ping the gateway..I dont want outsiders ping my gateway, i need ping for inside internal network only.
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Jun 24, 2012
I have 2 cisco routers that resired on the same interface on Cisco ASA. For security reasons, on both of the routers I have configured default gateway to be ASA interface, then static route between them on the ASA, I get the following error when on station comming from first router trying to connect to another station behind secound router (again, on the same interface, maybe this is the issue?).
ASA-3-106001: Inbound TCP connection denied from flags SYN
There is access list allowing traffic between but hit count is 0
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May 28, 2013
I am attempting to allow traffic from one vlan to another.Vlan 1 is on Interface 0/2.vlan1Vlan 2 is on int 0/3.vlan2Each vlan can communicate inside it's own vlan, and the gateway on each responds to vlan specific clients My problem is that I am unable to communicate between the two vlans. Using the ASDM packet tracer tool, I find that packets are denied by the default rule (on the second Access List lookup). It appears as if the packet never reaches the other interface. The access rules are set up to allow traffic from one vlan to another (inbound), on both interfaces. Testing from either vlan to connect to the other fails. Below are the accee-rules for each vlans. Once I get basic connectivity working.
access-list aVlan1; 3 elements; name hash: 0xadecbc34
access-list aVlan1 line 1 extended permit ip any 192.168.151.64 255.255.255.192 (hitcnt=0) 0xeb0a6bb8
access-list aVlan1 line 2 extended permit ip any 192.168.151.128 255.255.255.128 (hitcnt=0) 0x3a7dfade
access-list aVlan1 line 3 extended permit ip any 192.168.151.0 255.255.255.0 (hitcnt=0) 0x93302455
access-list aVlan2_access_in; 3 elements; name hash: 0x6dc9adc7
access-list aVlan2_access_in line 1 extended permit ip 192.168.151.64 255.255.255.192 192.168.150.0 255.255.255.240 (hitcnt=0) 0x054508b7
access-list aVlan2_access_in line 2 extended permit ip 192.168.151.128 255.255.255.128 192.168.150.0 255.255.255.240 (hitcnt=0) 0xc125c41e
access-list aVlan2_access_in line 3 extended permit ip host 192.168.151.3 192.168.150.0 255.255.255.240 (hitcnt=0) 0x4adc114c
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Mar 16, 2013
I am trying to troubleshoot a problem where in one of my remote site is not able to access some networks at HQ over Site to SIte VPN ( asa 5505 at Remote and 5520 at HQ). I ran packet tracer and HQ ASA looks clean as everything came out as ALLOW. Remote site ASA packet tracer give me DROP out at Phase 9 (VPN). I am not very sure what to look in ASA for resolution now. Is it an access list that is blocking the traffice or VPN setup.
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Apr 9, 2012
I have a customer with a Cisco ASA 5510 firewall, an inside network containing a Genetec video recording server, and cameras installed on broadband modems throughout the area (each with a public IP). They've recently purchased Axis Q6034-E cameras that use H.264 to stream back to the video recording server. The camera has a view mode where you can watch it through H.264 or Motion JPEG. The view with M-JPEG works, but when I switch to H.264 the video stream is denied. We have allowed RTSP, RTP, and HTTP (it's setup with only http, not 443)traffic from the camera address on the cable company public network but are still being denied the video stream. The recording software requires that the feed come from the H.264 feed, so the motion jpeg does not fix the underlying issue of being able to record.
We know it's the firewall because if we install the camera on the inside network, the video feed in H.264 works to the recorder.
How to enable something special on the firewall to allow traffic through from the device?
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Jul 4, 2012
I am trying to lock down the VPN access on my Cisco 5520 ASA's whereby I wish not to allow users to SSH access etc on servers running on the same interface that they are VPNing into.
I did not originally configure the ASA and so I am slightly confused by some config on it. Currently when I attempt to PING a server within the same interface as the VPN network I get the following error in the logs below.
5 Jul 05 2012 09:45:15 305013 monitoringsystem Asymmetric NAT rules matched for forward and reverse flows; Connection for icmp src dmzAHdata:VPN IP dst AHdata:monitoringsystem (type 8, code 0) denied due to NAT reverse path failure
As a workaround I created a NAT exempt rule which then allowed traffic to the server in question however I wish to limit the traffic to only ICMP and when I do this in the firewall it does not take affect. Is this because of the NAT exempt rule?
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Jul 11, 2011
My cisco 837 is connected to a ADSL Router by Ethernet Cable. I have forwarded the telnet port from my ADSL Router to the LAN IP of the Cisco Router so that i can connect to it Remotely but it is not working. I am able to telnet internally but from Internet it is not working. I am not using Cisco Router for ADSL Connectivity.
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Jan 2, 2011
I have just purchased a nas drive. I want to be able to access my files from anywhere. I believe if i setup FTP i can view the files over the web. from what i have been told i need to forward port 21 to the ip address of the nas drive.
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Jul 21, 2011
I purchased a Cisco 851 Router for the reliablity, but the process to manage the router to port forward a IP address for a internet camera ... I'm lost. I will try the forums, versus paying a $400 dollar fee for support.
What is the process to have an internal IP address for my outdoor network camera visiable for WWW? How do I port forward 10.10.10.40 How do I assign a static IP to this outdoor network camera?
I can access the Cisco SDM Express V2.5
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Jan 10, 2011
I can't get any type of port forwarding or DMZ to work with this router. I've checked for double NAT, have a static router IP etc.
I'm using Vista, but I've tried it on a computer with XP as well. I'm using the standard windows firewall, but I also tried disabling it.
I'm using the original 1.10 firmware, I don't know if this is a known issue that was fixed or not.
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Jan 9, 2011
I can't get any type of port forwarding or DMZ to work with this router.
I made sure to check everything in the sticky before I posted and it all checks out.
I'm using Vista, but I've tried it on a computer with XP as well. I'm using the standard windows firewall, but I also tried disabling it.
I'm using the original 1.10 firmware, I don't know if this is a known issue that was fixed or not.
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Sep 25, 2011
On our LAN we have a SBS server and Level Platforms server and soon to be another Ticket Server all hosting an app runnin on 443. OWA, Service Center and Spiceworks Help Desk.
Each has it's own URL:
Remote.domain.com/owa
Sc.domain.com/owa
Support.domain.com
How can I forward Https to these servers? The one company said some Can port forward by URL another guy said you can forward to your internal dns
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Apr 3, 2013
Using Cisco IOS 12.x+ on a router.How would create an ACL that will only allow access to a port from the inside only after it has been established. i.e. similar to port triggering? Inside host 10.1.1.60 needs to use port 61200 for bit torrent. Dont want the port to be visible as open to the global net accept when the host 10.1.1.60 establishes the connection first.That way a port doesnt have to be left open 24-7.
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Aug 26, 2012
Recently setting up a RV042G for my SOHO. Everything seems to be fine except for SSL port forwarding. I know the router's external static IP is reachable because I test it out with remote management functionality from an external IP. Port forwarding also works correctly because I have other behind the router servers in both UDP and TCP working flawlessly. PPTP VPN also works corrrectly. What I can't get it to run is an Apache server. Looks to me RV042G kind of drop all SSL or HTTP ports from the WAN side.
Configuration:
- 4 port forward rule under "Setup/forwarding" for 80/8080/443 and 8443 all to the webserver with a static IP.
- Firewall page I have Firewall, SPI, DoS enabled.
- Added a firewall rules to allow all HTTP and HTTPS traffic from WAN1 to the webserver static IP.
- Toggle Block WAN Request, HTTPS and multicast does not affect the result.
- Toggle and mapping the remote management port to other port beside 443 does not affect the result.
The same setup will works corretly under my old Netgear FVS router. Am I missing something in RV042G setup?
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