Cisco VPN :: Flow Is A Loopback ASA 5505
Feb 24, 2011
I have 2 ASA 5505, with a site-2-site vpn, I need to reach a server on network A on port 7887 from Network B.The 2 boxes are both on a public net and has a private net inside.When initiating a telnet session from a Host on network B, to a ip 172.210.210.56 /24 (which is defined as my remote network in the connection profile)I can see the trafic arriving on the ASA on network A, but the trafic gets rejected with the following.
Built local-host outside:VPN-TEST_172.210.210.5602: VPN-TEST_172.210.210.56 7887 Teardown TCP connection 398765 for outside:VPN-TEST_x.x.x.x/16698 to outside:VPN-TEST_172.210.210.56/7887 duration 0:00:00 bytes 0 Flow is a loopback03: Teardown local-host outside:VPN-TEST_172.210.210.56 duration 0:00:00.I'm a newbee with the ASA 5505, and connot figure out why this is a loopback ?
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Jun 13, 2012
I am fairly new to configuring ASA's. I have an ASA 5505 with one outside interface and three inside interfaces (inside1, inside2, and management). I need inside1 and inside2 to be able to talk to eachother but cannot work out how to make this happen. They are both configured to the same security level and the 'Enable traffic between interfaces with same security level' box is ticked. I have also tried adding appropriate NAT and Access rules. The packet tracer suggests the rules are correct for allowing traffic flow between interfaces but obviosly this may not be the case.
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Oct 21, 2011
I am in search of a new routers. I don't have any special task to do. Just the flow of maximum 2mb/sec data and some times video conference. However I need the Voip solution as well. I just got excited on the cisco ASA 5505 product. Can this fulfill my requirements. Can this work as the router 1841. Does this support DMVPN, SSL VPN and dynamic routing. Can I upgrade the IOS for dynamic routing purpose. Do you recommend to purchase this produe act or not instead of router ? What are the limitations of this product. If I purchase this I can use this as an router as well as strong security solution. How many ports are available for traffic flow in ASA 5505. Are all routed mode or some of them switch port.
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Feb 17, 2011
I am facing issue with using IP SLA544, I am given a project in office and need to implement policy based routing,for some reasons i want to use loopback for it.I have 2 routers A and B, I just want if traffic from 216.0 network comes on A set next hop to routers B looback interface. Can i do it? its working fine with physical interfaces but not with loop back. This loop back is reachable and from router A if i telnet the loopback IP of B it actually gets me to Router B as well.
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Feb 15, 2013
How can we manage ASA in GNS3 through ASDM? And How to install image for IDS in GNS3?
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Oct 29, 2012
I have a setup with a few sites that have layer three switches behind firewalls. I've been successful in setting up GRE tunnels between all the layer three switches, the GRE traverses IPsec which goes between the firewalls at each site. That way, the GRE is encrypted over the Internet and I don't have to deal with protocol forwarding and stuff. The GRE tunnels are terminated at the loopback addresses of each layer three switch, this works well for the most part, except that I need to put static routes for each loopback address in each switch to point via the firewalls, because when OSPF comes up over the GRE tunnels it starts advertising the loopbacks, and as such the switches think they can get to them over the GRE (which is built from the loopbacks to begin with), as you can see, sort of a catch 22. The static route method works fine, but it makes it so that I can't access the loopback address for monitoring/management purposes from any other sites on the basis that the local core tries to send it directly to the firewall rather than over the GRE tunnel. Is there any way to force only the GRE traffic out via the firewall while letting any other loopback-destined traffic go over the GRE? I'm thinking this could be done with a properly-matching route-map, but I'm not sure where I would apply it, could I apply it directly to the loopback or would the GRE traffic skip that on the way out?
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Jan 28, 2013
I've got some 1941 ciscos set on every branch.We have native L2 between this offices and I want to use external ip addresses on gig 0� interfaces anfdf local ip addresses on lo 0 interfaces, and use lo 0 for vpn connections.
I do:
int gig 0/0
ip add 192.168.181.14 255.255.255.0
ip nat outside
I can ping it from local network behind giga 0/1 but i can't ping it fro outside, how can i do this?
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Jan 4, 2011
I have a cisco router 2811 connected on other two routers but can't ping any of them from any of them too (frame-relay encap correct) DLCI mapping ok all ip configured only router 2 's line protocol is up the rest is down on others and seems LMI sent are not receive and do know how correct that
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Dec 10, 2012
I would like to be able to use NAT loopback on a Cisco EPC3925 so that I can refer from my iPad to the webserver that is located on my iMac on the same LAN by using the external site name. Is that possible and if so, how can I configure the router?
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Sep 11, 2012
I have a cisco 2821 and have configured a llopback address which I want to use for management, however, I am unable to ping it from a device attached to GigabitEthernet0/0
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Jun 22, 2011
I am working at a client site today. The client has a large Frame Relay Hub Spoke network. The Hub is at the HQ location, and then there are about 15 spoke sites in remote offices.
We are having an issue with the frame between the HQ and one of the spokes. We are currently working with our dear friends at AT&T to troubleshoot the issue. AT&T yesterday was trying to run a local loop test to the router at the remote (spoke) end. We were working iwth them in trying to put the remote router (which we manage) into a loopback mode. We were trying to use controller commands
COOP-Rappahanock#conf t
Enter configuration commands, one per line. End with CNTL/Z.
COOP-Rappahanock(config)#controller ?
% Unrecognized command
COOP-Rappahanock(config)#controller
That we seem to run out of options...
How can we put the subinterface that is the other end fo the frame into loopback mode so that a local loop test can be done between us and AT&T (provider)?
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Jun 16, 2013
This is one of the standard issue vodafone routers. So i set up web-server on my laptop, and it is accessible to the internet now.
However I need to be able to access it from my machine using the public address. But I just cannot find where to enable nat loopback. I looked for options in both regular and advanced user logins (web interfaces). So I suppose the last option is telneting into it, and using commands to do it.. but I don't know how to access it (cant find the credentials). URL
In above link it says that i can find this info in configuration file, but how to access it?
And then what commands should I use to enable the NAT loopback?
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Apr 16, 2013
I have a router asr1002 and I need that my loopback interface will be accessible from internet ISP adderss space I have
46.xx.x.64 255.255.255.192
interface TenGigabitEthernet0/2/0.301
description -=ISP=-
encapsulation dot1Q 301
ip address 46.xx.x.66 255.255.255.248
[code]...
packets transmitted 9received 0packet loss 100 %time 8063 ms
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May 25, 2013
I wonder if there is no any issue when we are using one loopback interface as source address in case multiple GRE tunnel.However, the destination IP address different per each tunnel, only having same source loopback.
for example),
interface loo0
ip address a.a.a.a 255.255.255.0
!
interface tunnel 10
[code].....
I saw warning message when I apply 2nd GRE tunnel on C7613, SRD6 IOS. we have a plan to enagle one more GRE tunnel in same.I need to decide to use adding one more loopback IP or just use this with ignoring warning message in terms of configuration easily.
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Feb 25, 2013
In my home network, I have a Synology. It has 10.0.123.123 as local IP address on my local network and it can be accessed by internet with the dynamic domain name.So when I'm home, I have to use 10.0.123.123 to access it, and when I'm away, I have to use trucmuche.diskstation.me.Would it be possible to configure the EA3500 to redirect the domain name "trucmuche.diskstation.me" to 10.0.123.123 when I use the domain name inside my home ?A friend told me that I had to configure "loopback" but I don't know how..
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Feb 24, 2013
I have a Windows 7 64 Bit machine, and I cannot find a way to disable the IPv6 Loopback. I looked at the article at How to disable IP version 6 or its specific components in Windows and shows how to set HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpip6ParametersDisabledComponents to various values – but none of these seems to disable IPv6 Loopback. I attempted setting this value to 0xffffffff and 0x20 – restarting my computer after each change, and I still do not get this disabled.
I am using another software called Webdriver or Selenium that gives errors when debugging if IPv6 Loopback is not disabled. It seems to attempt to connect to [::1]:7055 and fails. Is there a way to force it to connect to 127.0.0.1.
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Mar 29, 2011
how do I telnet to remote devices from nexus 7000 with source interface as loopback 1?
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Nov 14, 2012
I purchase new router EA6500 for fiber optic network 100/200 (my old WRT56GL is too slow for this speed). Now i have big problem with NAT Loop back - didn't work. How can I corrected this error. All other services work OK. I need this function for my mail server and web server on my firm) - now I can't connect from local IP to my mail server and read messages. Firmvare version is 1.1.27.144730.
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Apr 3, 2013
Region : UnitedStates
Model : TD-VG3631
Hardware Version : V1
Firmware Version : TD-VG3631_V1_130108
Does this modem support NAT Loopback? I can't get it to work.If so, why not, can we have a firmware that supports NAT Loop back?
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Jun 5, 2012
I have a Cisco CBS3020-HPQ chassis switch running IOS 12.2.(25r)SEF3. One of the ports is in "disabled" state but when I try to unshut it, it doesn't work, the switch logs shows the following event:
%PLATFORM_ENV-3-LOOPBACK_PORT_POST_ERR: Gi0/1 can't be brought up because it failed POST in Loopback test
how do I resolve this, the port is unusable since I can not get it out "disabled" state.
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Mar 10, 2013
When can we have an upgrade to include 'Lookback' function for Virtual Server ? I understand both Build-120802 and Build-120926 does not support this Loopback feature. Without the loopback feature, we won't be able to test out Dynamic DNS URL is working or otherwise on local PC.
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Mar 7, 2013
Region : UnitedKingdom
Model : TL-WDR4300
Hardware Version : not clear
Firmware Version :
ISP : BT
I am thinking of buying a TL-WDR3600, but just need to know the answer to the question below.Can anyone confirm if the TL-WDR3600 supports NAT Loopback functionality?
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Sep 27, 2012
Is there anyway to monitor netflow on RV042G. We have a network at a small school that will get bogged down during the day.
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Oct 17, 2012
I think packet flow is changed in 8.3 IOS and above.We are using private NAT for ouside traffic.why we are using private IP for outside traffic?
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Jun 2, 2012
why ip flow egress is not functioning on 7600?When I do "sho ip cach flow", I can see only inbound flows.
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Nov 8, 2012
How does one find the top user or IP accounting with this ASA5505 v7.22 device?
-With 1841 ISR:
-sh ip accounting
-sh ip flow top
Very lame if they don't have similar commands or capabilities on the ASA series.
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Aug 28, 2011
Recently we have configured few of our routers to export FNF (Flexible NetFlow), some of our router are exporting NetFlow V9 packets with fields as mentioned in the NetFlow V9 RFC. We noticed that one router is exporting NetFlow V9 with the field value different from RFC. I have attached the screen shot which shows that Field 194 is assigned for TOS. Whereas according RFC it is 5. Is there any specifc reason begind this or this is an IOS related issue.
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Jan 18, 2012
I am trying to pass Traffic thru the IPSEC tunnel but it does not work ([Cisco Router 892] <---> [Cisco ASA 5510] <---> [Cisco Router 892]) The Cisco ASA 5510 doesn't pass traffic UDP=500 & UDP=4500 ports...
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Aug 8, 2011
I wish see the top talkers 10 at the my router 2800 IOS 12.4 (13a)
but when I run the command "show ip flow top-talkers" appear following:
% Top talkers not configured
I've set
Router(config)#ip flow-top-talkers
Router(config-flow-top-talkers)#top 10
I'm using the netflow version 9
maybe my router not support this issue ?? or it's missing some configuration.
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Aug 30, 2012
I've been thinking about this for a while and I can't seem to find a comforting answer: Assume you have three datacenters connected over a WAN. Each datacenter has its own Internet and firewall, and each firewall has a trusted network, untrusted network (Internet), and DMZ: [code]
-DMZhostA has inbound access from the Internet over port X.
-DMZhostB has outbound access to DMZhostC over port Y.
-DMZhostC has outbound access to the trusted network over port Z.
If DMZhostA gets compromised from the Internet, the attacker can indirectly access the trusted network through DMZhostC, assuming the services running on the given ports are vulnerable/poorly secured.How do you track this web of access? This is a simple scenario with just three firewalls and datacenters, but it gets proportionally more complex and harder to track as the network gets larger. Manually tracking the traffic flow seems tedious, slow, and inefficient.
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Oct 14, 2011
My question is pretty straight forward but here is some background information. I would like my browsing traffic to funnel through my phone's 3G or WiFi connection. Is there any information out there on how to direct the browser to use the second internet connection? I was thinking about setting up a VPN using the second nic and somehow instruct the browser to use the specific proxy. I have no idea if that is even possible though.
The need for this is pretty simple. I do not want my browsing habits being logged by my company's network. Also while maintaining the current corporate connection so Outlook and RDP programs continue to function correctly.
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Jul 26, 2012
Struggling to find any documentation that states both "ip accounting & netflow" are supported on the new ME3600 switches. I have tried both a 12 and 15 release of software. Netflow produces no data what so ever, ip accounting only produces data (of the global network) when configured on my uplink (running MP-BGP network) unable to get specific data for user networks in seperate VRFs. Is this a case of the commands being there but not being supported?
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Aug 17, 2011
On my 1841 when i enter the "ip flow-cache timeout active 2" command it accepts this command with no errors. But when i look at my running-config this does not list.I did the same thing on my 2811's and 3745 and it shows up in the running-config. Should I assume if it doesnt' show up in my config file than it is not applied? How can I verify that it is or isn't?
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