Access A Web Server Behind A Firewall?
Oct 15, 2012
I am looking for ways to access (1) my (own) web server (with IIS 6/Apache) (HTTP)(2) my IP/Network cam (RTSP)from my smartphone (3) from "Internet". I am a .NET-system developer but my networking skills are very poor.My problem is that there are obstacles, i e an evil firewall (4). Since my web server (1) and IP/Network (2) cam are behind it (4), I have absolutely no idea how to access them from my smart phone (3) from Internet.My ISP doesn't allow port forwarding, but I know that there is a Socks5 server which I can reach @port 1080. I believe that I can use it somehow?Is it possible to reach my web server at all from outside the firewall? How? Are there any other solutions for me except for changing my ISP?
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Dec 13, 2012
How can I access my webserver (on my private LAN) from the internet? INTERNET------------(53.X.X.1 )ASA(192.X.X.X)DMZ-----------(192.X.X.80)HTTP SERVER. I can ping my public address on the ASA outside interface 53.X.X.1 form the internet, but I'm not sure how to do this. I tried to NAT, but I'm failing.
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Jul 9, 2012
We have a Cisco ASA 5505. As of yesterday we could no longer access our web server (the web server is hosted off-site). Pinging the DNS address and direct IP (from the firewall and a PC) both return no response. Pinging the IP from the T1 router responds properly, meaning the router can access the web server, but the firewall cannot. Accessing the web server has never been a problem, and no configuration changes have been made to the network/firewall. Other locations can access the web server just fine.
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Mar 23, 2013
I bought ASA 5510 about a week ago, very basic configuration and my priority was and still to get access list inbound the outside “Security Level 0 “so I can access my web server from the cloud but unfortunately I could not make it work (((TCP access denied by ACL from 92.40.X.X/52511 to outside:81.108.X.X/80))). ••à>> 92.40.X.X is a pc from the cloud that I used to access my web server and the 81.108.X.X is my public ip address My recent Conf is as follow:
Nat Section:
==================================================================================
Dynamic:
nat (inside,outside) source dynamic any interface <<<To have the PCs that inside the Network to have access to Internet>>>>
[Code].....
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Jan 19, 2012
There is web server at the internet. The firewall ASA5505 is located at the inside edge of the edge router and the internet is at the outside edge router of the edge router. The router has already been configured can route the outside network of firewall to internet. [code]
1. I have a host at the DMZ zone of firewall and if it wants to access this web server by http, the following command lines to be added to ASA5505 good enough and anything wrong with them? [code]
2.I have a doubt here that do I need to add any command line related to the Static Mapped address of 192.168.20.10/24 like below?
access-list Outside_DMZ extend permit tcp any 192.168.20.10 255.255.255.0 eq 80.whereby the 192.168.20.10 is the static mapped address of the Host at the DMZ to Outside Nertwork. Or, any other command related with the Static Mapped address have to be added?
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Jun 20, 2011
I just upgraded my ASA 5585 cluster from 8.2 to 8.4. I also upgraded the asdm .bin from 6.35 to 6.43. after rebooter the cluster, I try to access it with ASDM installed on my computer but it blocked at 17%.I tried to access [URL] but I just an error (with IE & FF) [code] What did I miss in the ocnfiguration ? I precise that I never used the http page, I already had the ASDM installed from another ASA.
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Oct 30, 2012
Trying to figure this all out. I'm getting untranslated hits. I posted the config I have so far.
Code...
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Aug 21, 2011
What I have is 3 interfaces on my PIX.- Outside: 216.116.87.0/24 (security level 0)
- 469: 172.16.6.0 /24 (security level 10)
- 571: 192.168.255.0 /24 (security level 1)
My users on 571 need to access a web server on the 469 interface. However, the requirements are that the 571 users can only access the Website using the public FQDN which there is a static NAT from outside to 469. [code] Here is also the Packet-Tracer and it shows what I expect that the traffic is source from 571 and exits 469. However, the users are not able to access the website.[code]
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Sep 7, 2011
First off, let me preface this by saying that I'm a novice when it comes to firewalls and more specifically, the ASA. I do however, have an above average understanding of switches/routers.
We have an ASA 5510 running 8.3 and recently I've decided to clean up the last admin's mess. All hosts and servers are on the same subnet, multiple subnets on the same VLAN... and a slew of other problems. Anyway, I recently placed the IT department on another subnet to test some things out before I migrated other departments to different networks. Everything seems to be working as it should be with the exception of one of our servers. The IT subnet is 192.168.150.0/24 and the problem server is on the 192.168.10.xxx network. I'm guessing the issue lies somewhere in the fact this server does have a static NAT and is accessible from the public. Let me give you an overview of what our network looks like:
ISP ---->ASA----->3750----->2960
My workstation is directly plugged into the 3750 switch, and the server is plugged into the 2960. I'm able to ping this server by both IP and hostname. However, I cannot access port 80 by IP or hostname. The users that are on the 192.168.10 and 192.168.11 (sadly both of those are on the same VLAN) network are able to access this server without a problem. Thinking logically, I thought I would send a packet from my workstation, it would head to the layer 3 switch's VLAN interface corresponding to my subnet, realize the .10 network is directly connected and then forward the packet straight to the server. However, it doesn't seem to be working that way. It look like it's being routed to the ASA then being dropped. I guess there's an access rule or firewall rule preventing me from getting to the server. Is there a specific part of my config you will need to see...
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Feb 16, 2011
My web server sits behind an ASA 5500.When I access the web site from outside, it works fine. When I try and access it from the server itself, I get"Internet Explorer cannot display the webpage" error. I can access other web sites, such as Yahoo.com, Google.com, etc. I have rules setup to restrict/enable incoming traffic, but I don't have any rules setup to "loop back".
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May 25, 2011
I would like to allow users from network 10.132.23.0/24, 10.132.33.0/24, 10.132.24.0/24 access to our SQL server(192.168.1.7) located on the inside interface(192.168.1.0/24 network) Those networks (10.132.0.0/16) come from the DMZ interface.
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Sep 21, 2011
I have verizon wireless router to connect to the internet via FIOS. The public IP on the wireless router is DHCP assigned. I have my home lab with cisco 2511 and octal cables. I would like to be able to access the terminal server remotely via the internet when I'm not in. I'm concerned cause the wireless router is DHCP assigned IP. Even if I have a static IP on the ethernet port of the 2511 connected to the wireless router, I'm not sure if the NAT will work so it can be accessible from the internet.
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Aug 2, 2011
I tried the solution posted at [URL] however it did not work on my ASA5505 8.4(2). I thought that it may be because I only have a single public address so the web server is responding to port forwarding through the one public IP already. looking in ASDM it appears to indicate that a configured access list is blocking the server from responding to the internal hosts.
object network Private_IP
host 192.168.1.15
object network Public_IP
host 1.1.1.1
object-group network internal_net
[code]....
Can I fix an access list (or something) to make this work or am I wishing for too much with only one public IP? This worked by default on my Netgear firewall.
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Oct 25, 2011
Using an ASA5505, have 1 static outside address, want to access an inside SBS-Server on SMTP, RDP (3389), HTTPS and port 987
Have configured network object nat rules using the asdm, SMTP works (I can telnet to the server on port 25 from outside), however for some reason I can not telnet inside and out on port 25, so outgoing mail does not work. RDP does not seem to work from outside, 987 I havent tested from outside. When I try to create a network object nat rule for https I get this message from the ASA:
[OK] object network SBS-HTTPS
object network SBS-HTTPS
[ERROR] nat (inside,outside) static interface service tcp https https
NAT unable to reserve ports.
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Jun 10, 2012
I need configuring RDP access to my local server from a remote location on my Cisco ASA 5505 Firewall.I have attempted to configure rdp access but it does not seem to be working for me. How to modify my current configuration to allow this? I need to allow the following IP addresses to have RDP access to my server: [code] The other server shows up as 99.89.69.334 but is working fine.
I already added one server for Static route and RDP but when I try to put in same commands it doesnt allow me to for this new one. My configuration file and what are the commands i need in order to put this through. Also, if there are any bad/conflicting entries. Also I have modified IP information so that its not the ACTUAL ip info for my server/network etc... lol for security reasons of course.Also the bolded lines are the modifications I made but that arent working. [code]
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Jul 13, 2011
I would like to allow remote access to a windows server through a ASA (5505) firewall. Users will use the vpn connection in order to connect to a private network. Is there any link that describes the steps for ASDM?
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Aug 23, 2011
I am using ASA 5520 with 8.2.4 IOS. I'm new to ASA/Firewall. I need to do access webserver from outside network.From Laptop (192.168.2.51), If I connect to url... it should open page from 10.10.10.50.I also need to ssh to webserver from laptop. If I ssh to 192.168.2.50 from laptop, it should connect to 10. 10. 10.50. [code]I can't get to webserver from outside network, so now, I connected laptop to directly ASA 5520 outside port with crossover cable.ASA Inside port connects to L3 switch. Webserver also connects to L3 switch. But still doesn't work.
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Apr 5, 2011
i'' ve one appliance ASA 5510, v8.X and asdm 6X here u have my configuration :
interface Ethernet0/0 description Link To WAN nameif outside security-level 0 ip address 212.96.23.186 255.255.255.252!interface Ethernet0/1 description Link to LAN(forefront) nameif inside security-level 100 ip address 10.20.80.1 255.255.255.252!interface Ethernet0/2 description Link to CoreSW (DMZ) nameif DMZ security-level 50 ip address 10.70.70.254 255.255.255.0
i have on server ssh (10.70.70.10) on my DMZ .
I wan to enable my external user, i mean outside user to be able to access to this server which is in my DMZ for this port ( ssh)
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Oct 6, 2011
I just purchased a domain name, that I have forwarding to my WAN address. I want to be able to access my home websie via this route. I have an ASA 5505, how do I get the ASA to point to the home server when the WAN IP address is entered?
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Nov 5, 2012
Trying to allow inbound access from any host outside to my LAN server on port 995. [code]
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Feb 20, 2012
I may have phrased the topic not too clearly, but I have an external domain name of mail.company.com , I want my users INSIDE the company be able to also get to url..., currently they cannot (nothing loads, looks to me as if firewall simply drops it) and I'm drawing a blank on how to get this done. Externally this works fine so if you're outside the company you can load up OWA just fine since my NAT rule translates the external IP to internal IP, but something is blocking this from the inside.
I have an ASA 5510. If you can just sent me on the right path with theory I'll figure it out on my own, I don't need exact steps, but I must be thinking of this wrong as I'm not getting anywhere.
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Nov 24, 2011
Configuring an asa 5505 with 8.42 software.I need to access an https server on the inside via the outside interface. have moved the http server enable to port 10443.Tried to make a "network object nat rule"
object network Vejrstation nat (any,outside) static interface service tcp https https object network Vejrstationnat (any,outside) static interface service tcp https https.
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Dec 1, 2012
Setup firewall rules that will block all inbound Internet access to the web server except port 443, Setup firewall rules that will block all communication between the two internal networks, except ports 7000 and 1702
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Oct 25, 2012
I'm having trouble setting up the correct rules on an ASA 5505 I'm using in my home office. I have a couple of IP Cams I need to access remotely.
I've tried setting up simple NAT(PAT) and/or Access Rules, but it hasn't worked. I have a single dynamic IP for the Outside interface. Call it 77.76.88.10 and I am using PAT. The CAM is setup to connect on port 80, but could be configured if necessary. I've tried setting up NAT Rules using ASDM as follows:
Match Criteria: Original Packet
Source Intf = outside
Dest Intf = inside
[Code]....
I'm afraid to use CLI only because I am not confident I'll know how to remove changes if I make a mistake.
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Dec 8, 2012
I have an ASA 5520 with a DMZ with private addresses that I SNAT to my outside network. From inside the DMZ I can reach servers by both the internal private IP and the public IP, except if the IP is from the server trying to connect. So, say I have server1 and server2. I can connect from server1 to server 2 with both public and private, but can't connect from server1 to server1' using the public IP. ASA logs show that packets are being denied due to land attack. DNS doctoring is not an option for me.
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Sep 27, 2012
When I start a VPN-session my server looses internet access. The server is host for a few virtual machines and they have internet access.using 5505 and asa is version 8.4(2). [code]
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Aug 21, 2011
It's been a while since I've done a lot with a PIX config so what is the best way to allow access for 2 IP addresses that need to RDP into a server here inside our network. They also wanted to have ports redirected, 3391 to 3389 and 3397 to 3389.
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May 4, 2013
I have a Cisco ASA 5505 in my home office which has a few PCs behind it with a linux web server running some websites. I can access the websites from outside no problem (i.e. on my iPhone using a 3G connection). However, I struggle to access the websites from within the network. The ASA gives me this error: [code]
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Feb 28, 2013
My internal network consists of Catalyst 3750 switches segmented into different VLANs. There is a default route on the layer 3 Catalyst switch sending all unknown traffice to the inside Internet of the ASA 5510. However, I'd like to have a separate VLAN for wifi guest access and send all of that traffic through one of the DMZ interfaces on the ASA 5510. I don't think you can have separate default routes based on VLANs on the 3750 switches so my only option is to make the ip address of the DMZ port the default gateway for all hosts on the wifi guest VLAN.
The problem I have is that I have a couple servers behind the inside interface that have services available to the public Internet via a NAT address on the outside interface. I want the guests on the wifi VLAN to have the ability to access the servers on the inside interface using the public address as well, but have not been able to come up with a solution yet.
Here is my config that pertains to this setup:
interface Ethernet0/0description Outside Interfacenameif Outsidesecurity-level 0ip address 76.47.10.x 255.255.255.224 rip send version 1rip receive version 1!interface Ethernet0/1description Inside Interfacenameif Insidesecurity-level 100ip address 192.168.17.1 255.255.255.0 rip send version 1rip receive version 1!interface Ethernet0/3description Wifi Guest Accessnameif DMZ2security-level 50ip address 192.168.60.1 255.255.255.0
global (Outside) 1 interface
nat (Inside) 0 access-list nonat
nat (Inside) 1 0.0.0.0 0.0.0.0
nat (DMZ2) 1 0.0.0.0 0.0.0.0
static (Inside,Outside) 76.47.10.x 192.168.17.88 netmask 255.255.255.255
I've tried the following commands below but no dice.
same-security-traffic permit intra-interface
static (inside, inside) 76.47.10.x 192.168.17.88 netmask 255.255.255.255
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Dec 27, 2011
Is there any way to access a MS Exchange Server 2007 on Windows server 2008 through an ASA 5510 running 8.4 with a full MS Outlook client (not using OWA - web browser)? OWA is currently working fine but I was wondering if access via the full Outlook client is possible and more importantly...is it opening up too many ports on my 5510?
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Sep 1, 2012
I tried to remotely access my disk connected to the USB port of the EA4500 and it failed until I disabled the IPv4/IPv6 SPI Firewall options. Surely, the firewall should not block the router's own FTP server!
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Jun 27, 2011
I have recently setup Splunk to receive my syslog messages from my ASA 5510. In the past I used kiwi without observing this issue, but I needed more features than kiwi had available. Anyway, anytime I stop the splunk service my asa does not allow any outbound connections to be established.
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Jul 24, 2011
I'am using ASA 5510 and I try to understand how PAT is working.I want to add a Mail Server in the LAN and a webmail using port 3000 on the server. ( webmail must be reachable from the WAN)This is my Configuration :actually LAN users access internet using NAT with one global IP ( 194.x.x.69) which is the ASA WAN interface.
WAN ----- ISP Router ---------- FW ---------- LAN -------- Mail Server + Webmail
| (25) | (3000)
194.x.x.69 192.168.1.254 192.168.1.6
I need to forward port 3000 and port 25 from outside to inside.For example, from the WAN : [URL] must be redirect toward 192.168.1.6:3000 . What is the Correct Configuration ? And what about the Inside/Outside Traffic,Is there any configuration to add ?
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