Cisco Firewall :: ASA5505 Cannot Access Internet And Use Team Viewer
Jun 1, 2013
I have a ASA5505 and I'm having trouble to achieve the following setup, block any kind of connection from outside except for IIS on port 80 and 443 but allow from the server to access any outside address, by domain or ip. Right now apps writen in C# on the server are throughing socket errors and Teamviewer remote control is not working, I would like it to replace remote desktop.
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May 9, 2012
I am deploying a small wireless LAN (192.168.1.xxx) at a remote site and would like to access a PC at LAN IP address 192.168.1.2 across the Internet via TeamViewer so as to monitor devices on that LAN. The wireless LAN uses about 12 Cisco Aironet 1310 bridges in a ROOT-NONROOT (I guess this is point-to-multipoint?) configuration.Our ISP has given us a single static WAN IP address, subnet mask, gateway, and two DNS server addresses.
My intent was to assign our static WAN IP address from the ISP to our RV082 router, plug the LAN devices (including the PC at 1.2) into the RV082, and then use Network Address Translation (NAT) to forward TeamViewer traffic to the PC at 1.2. But the RV082's user manual says NOT to use the router's WAN IP address in the NAT table.So I'm confused as to how to send remote TeamViewer traffic to the PC inside my LAN. Is NAT not the way to do this? Should I be using port forwarding instead?I guess another way of skinning this cat would be to put a second NIC in the PC and let the second NIC have the WAN IP address so that it would be the first point of contact from outside, but that defeats some of my purposes for having the RV082 in the first place.
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Jan 3, 2012
I want to block team viewer using cisco ASA-5585 asdm..
How to block it using regular expression
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Aug 7, 2012
I have a customer that wants to purchase an ASA 5510 security plus to terminate client VPN access for an external support team. The customer claims to want URL content filtering/proxy which leads me to suggest a CSC SSM 20 plus module. But upon further conversation, he mentioned wanting IPS. In this case, the customer does not seem to know the difference between the URL content filter/proxy and the IPS and uses both terms interchangably.
1. What would you suggest in your expert opinion would be the best module to get for this customer? IPS or CSC
2. If I go with the CSC module, where can I find good documentation on how to configure it and get it up to date?
3. does the CSC module provide any web proxy functionality?
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Feb 24, 2011
I have a normal setup of ASA5505 (without security license) connected behind an internet router. From the ASA5505 console I can ping the Internet. However, users behind the Firewall on the internal LAN, cannot ping the Internet even though NATing is configured. The users can ping the Inside interface of the Firewall so there is no internal reachability problem. In addition, I noticed that the NAT inside access list is not having any hit counts at all when users are trying to reach the internet.
When i replace the ASA5505 with a router with NAT overload configuration on it, the setup works normally and users are able to browse the internet.
The ASA5505 configuration is shown below.
hostname Firewall
interface Ethernet0/0
description Connected To Internet Router
switchport access vlan 10
[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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Dec 10, 2012
I've been struggling with gaining access to the inter through our Comcast business gateway. We have had Comcast configure the device fro true static IP subnetting. Turned of local DHCP on the device etc. Here is my config.
ASA Version 9.1(1)
!
hostname TOCN-EX-01A-C5505-GW
xlate per-session deny tcp any4 any4
xlate per-session deny tcp any4 any6
xlate per-session deny tcp any6 any4
[code]....
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Jun 19, 2011
How can I get DMZ hosts to be able to access the Internet via the Outside interface of my ASA5505.I am using the DMZ to allow temp guest acces to the Internet.
Here is my configuration and it can be changed as needed.
User Access Verification
Password:Type '?' for a list of available commands.ciscoasa> enaPassword: *******ciscoasa# sho run: Saved:ASA Version 8.0(4)!
interface Vlan1nameif insidesecurity-level 100ip address 192.168.100.39 255.255.255.0!interface Vlan8no forward interface Vlan1nameif dmzsecurity-level 50ip address 172.31.10.1 255.255.255.0!interface Vlan11nameif outsidesecurity-level 0ip address 24.172.82.xxx 255.255.255.252!interface Ethernet0/0!interface Ethernet0/1switchport access vlan 11!interface Ethernet0/2!interface Ethernet0/3switchport access vlan 8!interface Ethernet0/4!interface Ethernet0/5!interface Ethernet0/6!interface Ethernet0/7!boot system disk0:/asa804-k8.binftp mode passivedns server-group DefaultDNSdomain-name asaobject-group protocol DM_INLINE_PROTOCOL_1protocol-object udpprotocol-object
[code]...
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Oct 2, 2012
I am trying to provide internet access to public and private SSID's on Cisco AP541n using VLAN's connected directly to ASA5505. VLAN1 is inside interface (private) and VLAN12 is wlan interface (public SSID). The AP541n is plugged into switch port 0/7 on an ASA 5505.Port 0/7 is configured as trunk mode. I have internet access when connected to private SSID but no internet access when connected to public SSID. why I can't access internet on public SSID?
logging class ip history emergencies
mtu inside 1500
mtu outside 1500
[Code].....
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Oct 18, 2012
On a windows 2003 data server with a 2008 domain controller, I have several Terminal Servers that are setup to only allow one remote time entry program to run. Totally locked down from network / internet (Kiosk Mode). Now I need to be able to view pdf files in a directory. How can I do this without giving access to the disks that are available for the time entry program to write back. The time entry requires a mapped drive with read/write access. Every pdf viewer I have found so far gives the ability to "File Open/Save as" and thereby gives access the the shared drive. If I use an Internet Browser then I have the same problem.
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Jul 11, 2011
I have a newish instance of 5520 running. I am seeing some odd logging issues in that the logs are significantly delayed showing up in the real time viewer. I'll try to connect, say on remote desktop, and will not see the traffic in the viewer for up to 20 seconds or so after I'm already connected to the server. I have not seen this before.
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Dec 29, 2012
using a Linksys E2500. I have a Ubuntu "server" set up which i can access on my LAN through VNC Viewer (windows machines) no problem. I can even access it through the external IP address on a machine inside the LAN (both internal address and external address work from inside the LAN). I set up port forwarding (per portforward.com) but i still can not access my machine from outside the LAN. It has a static IP as well btw.
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Jan 9, 2013
Internet ISP -> Juniper SRX 210 Ge-0/0/0
Juniper fe0/0/2 -> Cisco ASA 5505
Cisco ASA 5505 - >Inernal LAN switch.
1. Internet is connected to Juniper Ge0/0/0 via /30 IP.
2. Juniper fe0/0/2 port is configured as inet port and configured the Internal public LAN pool provided by the ISP. And this port is directly connected to Cisco ASA 5505 E0/0. Its a /28 pool IP address. This interface is configured as outside and security level set to 0.
From Juniper SRX, am able to ping public Internet IPs (8.8.8.8).
Issue:
1. From ASA am unable to ping public ip configured on Juniper G0/0/0 port.(/30)
2. From ASA no other Public internet IP is pinging.
Troubleshooting Done so far.
1, Configured icmp inspection on ASA.
2. Used the packet tracer in ASA, it shows the packet is flowing outside without a drop.
3. Allowed all services in untrust zone in bound traffic in Juniper SRX.
4. Viewed the logs when I was trying the ping 8.8.8.8 in ASA. It says "Tear down ICMP connection for faddrr **** gaddr **
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Feb 10, 2010
I installed a new ASA using 8.2.2 version and ASDM 6.2.5 version in contexts mode.When i enable logging for ASDM as debugging i cannot use the real time log viewer because I have an error "Syslog connection Lost. Try restarting the syslog connection", I tried to reconnect using the icon at the bottom but nothing change.
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Dec 20, 2011
I'm running into this issue on an ASA 5520 running version 8.2(2)9 and ASDM version 6.2(1).
I have an ACL denying traffic to a certain IP range and the logging level set to Debugging. The hit count is rising quite rapidly but when selecting "Show Log" the Real-Time Log Viewer opens with a value of 0x13d0ee2a in the "Filter By" field and no logs are ever shown.
Logging is enabled globally and Logging Filters on ASDM is set to Debugging as well.
how I can get the RTLV working?
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Feb 15, 2012
I have a new ASA 5510 running 8.3(1) and ASDM 6.4(5)
I am trying to use the real time log viewer to troubleshoot some access issues, but I am getting delays of up to 30 seconds or more between my client connecting to the ASA and the corresponding events showing in the RT Log viewer. I am using a simple filter for source IP as it's quite a busy device.
I've seen an article that says to turn off certain logging IDs (such as 304001 from memory) which I have done, but no different.
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Apr 5, 2012
Can i access Cisco ASA 5505 Remotely Via Modem? l mean out of band management of Cisco ASA 5505? is that possible?
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Mar 21, 2013
i have test to access the firewall of ASA5510 with ASA845-K8/asa902-k8bin + asdm-712.bin +JAVA6 / 7, is completely no problem
When i try to install a new ASA5505 existing IOS is asdm825-k8 and also asdm-712 with JAVA7 is not allow to access the firewall with ASDM
After i type in username password, it stuck on the page loading , sometimes it will come up with cannnot to the device something like that.
telnet and SSH is no problem, i still can download the IOS with TFTP.
I think may be the java problem, because i just to connect with wrong ip and password, it also stuck in this page.
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Oct 27, 2011
I manage to configure the firewall 5505 so that it can ping between outside and DMZ and also between DMZ and inside.
Outside and Inside are not accessible to each other because Outside No Forward to Inside.
My purpose now wants to access the shared folder by Windows Explorer ( under Network ) between for example DMZ and inside. I tried to do it but cannnot even see the Host of the other party network. For example, if I open Windows explorer at DMZ, I can't see the Host at Inside Network. Same as I open Windows Exploere at Inside, I can't see also the Host at DMZ network.
How am I configure so that I can access the hsot as well as shared folder of two sites which already can ping each other?
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May 16, 2011
I just started at a new company and they want to use iphones in place of blackberry's, what a surprise. We have a exchange server and blackberry enterprise server. My question is how do I configure the cisco ASA to allow for iphone vpn connection and start replacing our blackberry's.
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Jun 2, 2013
I have setup a Remote access VPN on my ASA5505 firewall through the ASDM wizard.I can successfully connect with the Cisco VPN client. My firewall also shows me the VPN session and shows incoming Rx packets. However, Tx packets remain 0, so no traffic is going out. My ASA5505 is configured as router on a stick with 25 different VLAN's. I want to restrict traffic to one specific VLAN using a crypto map.When I issue a ping -t command on my connected Windows box, the firewall log shows me the following message:
"IKE Initiator unable to find policy: Intf outside, Src: 10.7.11.18, Dst: 172.16.1.1."
"This message indicates that the IPSec fast path processed a packet that triggered IKE, but IKE's policy lookup failed. This error could be timing related. The ACLs that triggered IKE might have been deleted before IKE processed the initiation request. This problem will most likely correct itself." [code] I have really no idea what's going on. I have setup a Remote access VPN countless times but this time it shows me the error as described above.
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Jan 20, 2013
I'm trying to make a very plain and simple network with the ASA 5505, I've strated from scratch over a dozen times triyng to find where I'm going wrong. My main goal is to simply create an IPSec VPN connection to my ASA 5505 and simply ping and connect to devices with the "inside network", so far I can easily create and establish a IPSec VPN Connection, but up to this point, I cannot successfully ping or access a single device on the ASA 5505 inside network.I've taken, create the IPSec profile with the ASDM wizard, add exemption for the VPN IP Pool, add access-list from this Cisco link, url...All this and I can't make a single connection to the inside network. [code]
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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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Apr 25, 2011
I am using ASA 5505 firewall with base-license. I connected my firewall to one cisco 3750 switch where i created 5 vlans. I done NATing for all vlans and they able to get internet and working fine. They able to browse all internet sites like gmail and yahoo mail.
All internal users are configured to use Outlook for their webmail. Here the problem is with outlook they are unable to send and receive the mails.
If they directly connected their system using public ip( Directly from ISP) they able to send and receive mails from outlook.
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Dec 18, 2011
we have a cisco ASA5505 with base license and 3 interface configured. Internal 192.168.1.1/24 DMZ 172.16.0.1/24 Outside 20.20.20.20/24 The DMZ is configured to allow the traffic pass to the outside interface only (base license allow only traffic to one interface) in order to let clients on this network to browse internet. On the outside interface there's a nat configuration that let the port 443 to be natted to an in internal server. Is it possible to let the clients in DMZ to access to the internal server on port 443 from the outside interface?
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May 11, 2010
Recently installed an ASA5505 for a client. They have Verizon DSL (7mb down, 384up package). So my config is Verizon (Westell) DSL modem connected to e0/0 (VLAN2) of ASA. From there I have e0/1 (VLAN1) connected to a 3COM 2250 Plus 50 port switch.
Since installing the ASA client has been complaining of a major slow down in Internet speed. Contacted ISP and they had me remove the firewall from the equation and hook modem directly to laptop. With this setup I get between 6-7mb download speeds. When I put the ASA back into the mix though, the speed drops significantly. The speed will varry but 90% of the time they do not even get 1mb download speeds.
The configuration is pretty straight forward, not doing a whole lot with the box other then using it for VPN (IPSEC).
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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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Jul 11, 2012
I have a network with 3 sites that are on different subnets. Each site has an ASA Right now, I am only able to connect to the ASA that is connected to the subnet I am connected to.I want to be able to connect to the ASA that are on the remote subnets on the address of the inside interface.The sites are connected all together by site-to-site VPN.Is there any way I can achieve that without opening the outside interface directly on the Internet?
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Jul 19, 2007
I have an ASA5505 running ver 8.0(2). I have configured the ssh timeout, ssh host commands and did the crypt o key gen. I am unable to access the device from the host I am allowing. Is there like ca save all command required? I am trying to use the default pix and telnet password. Do those still work?
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Apr 30, 2013
Yesterday, I configured ASA via CLI for Static PAT and created some entries in an access-list. I will be testing that setup this evening.
However on a quick double check of the settings on the device via ASDM I could not see the acess-list settings. I searched every tab and found nothing so I PuTTYed into the device and checked the running config. The rules I created were right there. Is this something I should expect? If so doesn't it defeat the point of having a GUI if it does not show a complete running config?
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Feb 2, 2012
I have configured ASA 5505 for remote access VPN to allow remote user to connect to the officce LAN from remote locations. VPN working fine, users can access offce LAN and sahred resource etc but once they connected to VPN, they can not browse the internet ? Internet browsing stop working as soon as their VPN client connnect with ASA 5505 t, once they are disconnected from the VPN , again they can browse the internet.
Does ASA 5505 blocks the internet browsing for VPN users ? Is there anything else I need to congfure to make sure VPN users can browse internet? Do I need to configure Split Tunnleing , NATing or routing for the VPN users?
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Mar 13, 2011
Recently, I have bought an ASA 5505 firewall which I have tried to connect to my ADSL router (Modem).It is now more than a week that I am trying to get internet connection through the firewall but I still can't succeed. I have tried many advices I get from this community but I still don't know what is wrong with my ASA Firewall configuration. From inside I am able to ping the inside and outside interface with a great success. and from my laptop which is connected to the firewall, I am able to ping the both interfaces (inside and outside) but still I can't access the internet.
As I don't have a static IP address from my ISP, I have configured the outside interface to pick up the ip address dynamically. Most of the time, the outside interface get the 192.168.1.2 ip address. [code]
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Feb 6, 2013
I would hereby like to inform if it is possible to configure the Cisco ASA5505 firewall to route internet via an external VPN, while a laptop and smartphone connect to the firewall via Cisco AnyConnect VPN.
The configuration would result into: Laptop on public internet -> Cisco ASA5505 VPN -> External VPN (Unix server) -> internet.
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