ICMP followed WAN interfaces

Similar Questions

• Redirect port on the router Cisco 881 can following the active WAN Interface

  Hello

  Is there a way to make the port Fowarding after the Active Wan Interface?

  In this case the port Fowarding only works when the interface is active is GigabitEthernet0/0

  Bureau3616 (config) # ip nat inside source tcp static 192.168.2.xxx 3389 interface GigabitEthernet0/0 3387

  If our ISP-1 failure on WAN-1 Interface GigabitEthernet0/0 switch to internet access automatically to ISP - 2 WAN-2 on GigabitEthernet0/1 but the port forwarding does not work because it is fixed to the other interface only and I is not the way to port forwarding follow the WAN an actress.

  Let me know please if anyone has an idea.

  It is a part of my config

  ! NAT configuration

  Bureau3616 (config) # ip nat inside source map route NAT-WAN1 interface GigabitEthernet0/0 overload

  Bureau3616 (config) # ip nat inside source map route NAT-WAN2 interface GigabitEthernet0/1 overload

  Bureau3616 (config) # NAT-WAN1 allowed 10 route map

  Ip address of Bureau3616 (config-route-map) # match 100

  Bureau3616 (config-route-map) # match interface GigabitEthernet0/0

  Bureau3616 (config-route-map) #exit

  Bureau3616 (config) # NAT-WAN2 allowed 10 route map

  Ip address of Bureau3616 (config-route-map) # match 100

  Bureau3616 (config-route-map) # match interface GigabitEthernet0/1

  Bureau3616 (config-route-map) #exit

  ! Port Fowarding configuration

  Bureau3616 (config) #ip avant-protocole nd

  Bureau3616 (config) # ip nat inside source tcp static 192.168.2.xxx 3389 interface GigabitEthernet0/1 3387

  Thank you!

  You can, but you can't use transfer based on the interface of the to do. It should be based on the address itself. It's fine if you have static addresses or reserved on your WAN interfaces, but pose a problem if the addresses are dynamic:

  ip nat inside source static tcp 192.168.2.x 3389 1.1.1.1 3389 route-map NAT-WAN1ip nat inside source static tcp 192.168.2.x 3389 2.2.2.2 3389 route-map NAT-WAN2

  Replace the address of your interface WAN1 and 2.2.2.2 with the address of your 1.1.1.1 WAN2 interface. Applying the road maps will work pretty much the same way as it does with your statements of overload. Each transmission NAT rule applies only to the traffic corresponding to rules of the road map.

• How to choose right for the WAN Interface MTU size?

  Hello

  I would like to know How to determine the right size MTU to set in the properties of the WAN interface (in my case, NSA appliances).

  First of all. I noticed that with SonicOS Enhanced 5.9.x, there is a Tool of diagnosis called PMTU discovery:

  

  This tool is not available with SonicOS Enhanced 5.8.x.

  I guess using this built-in tool is a way to determine the right MTU size to apply.

  Second, for SonicOS versions that do not have this tool and to understand just how to manually determine the size MTU, I would like to know what is the method to follow.

  On the Internet, I found this method by using the ping-f-l command. Once you have determined the largest possible packet size, it ask you to Add 28 to that number and you get the MTU size to define the interface.

  Case study:

  In my business, there are 2 sites: 1 in China and 1 in South Korea. Both have a firewall SonicWALL NSA.

  To determine the MTU size that is applicable from the Chinese site, I get the same results with the 2 methods mentioned above.

  With the help of the PMTU discovery:

  I get 2 IPs: 8.8.8.8 and the Korean FW IP WAN. I get the same result: 1500.

  

  

  However, I noticed that the MTU size should be set to its maximum (1500) of size on the properties of the interface WAN for this test to work properly. Indeed, when I put in 1404 to test, PMTU discovery find 1404 such as MTU size:

  

  

  With the help of ping - f - l:

  When you use the ping with FW Korea WAN IP method, I found 1472 as the maximum packet size:

  

  According to the method I've read on the Internet, adding 28 will make me a MTU of 1500, same size as the PMTU discovery method.

  My question is: can you confirm that these 2 methods are correct determine the MTU size to set the WAN interface? Especially the one with the ping command? If not, how do?

  Thanks in advance for your comments.

  I can tell you that as technicians, we use the way to CMD line to adjust the MTU on WAN interfaces. We saw this as a number to work with.

  Thank you
  Ben D
  #Iwork4Dell

• RV180 DHCP IPv4 client to work on the WAN interface?

  Hello

  Is it the customer Cisco RV180 router/firewall support DHCP on WAN interface? What is specifically mentioned on the DHCPv6 client, however, it is not mentioned for the client to IPv4. I want to set up with my cable modem in Bridge mode accessing the WAN on the RV180 interface? So I would get the IP address of my ISP.

  Thank you

  Niels

  Sent by Cisco Support technique iPad App

  Hello Niels,

  The RV180W can certainly pick up a DHCP address from your ISP to the WAN interface, via a bridged modem. In fact, it is the default configuration. Of course, you can also change your type of connection to a static IP or PPPoE (DSL) connection profile.

  All our small business routers are certainly capable of this confiugartion. Personally, I currently use a RV180W with a cable connection. Public IP from my ISP very well address the picked up RV180W.

  All the best,

  -David Aguilar

  Cisco Small Business Support Center

  1-866-606-1866

• Several DMVPN Instances on the same WAN Interface

  Hi people,

  Is it possible to run several Instances of DMVPN on one WAN Interface? We can for example configure 3 Tunnels on a router using a same Interface WAN but running Instances separated from EIGRP for each Tunnel? Kindly let me know, Alioune

  Hi Martin,

  Yes, you can create DMVPN as you say with a WAN interface it's possible... you can have several interfaces tunnel pointed a WAN interface as the source interface, which is located in a public area... with different public ip as destination tunnel...

  Tunnel1 interface

  Description * A - VPN Tunnel *.

  bandwidth 100000

  IP vrf forwarding Red

  IP 10.0.252.2 255.255.255.252

  no ip redirection

  no ip unreachable

  no ip proxy-arp

  IP mtu 1500

  load-interval 60

  source of tunnel GigabitEthernet0/0 (WAN Interface)

  tunnel destination 1.1.1.1

  protection of ipsec profile dmvpn tunnel

  !

  Tunnel1 interface

  Description * B - VPN Tunnel *.

  bandwidth 100000

  IP vrf forwarding Red

  IP 10.0.252.5 255.255.255.252

  no ip redirection

  no ip unreachable

  no ip proxy-arp

  IP mtu 1500

  load-interval 60

  source of tunnel GigabitEthernet0/0 (WAN Interface)

  tunnel destination 2.1.1.1

  protection of ipsec profile dmvpn tunnel

  !

  like the above... example...

  Please rate if the information provided is useful!

• What is the difference between the following two interfaces?

  What is the difference between the following two interfaces?
  com.tangosol.coherence.jpa.JpaCacheStore
  com.tangosol.net.cache.CacheStore

  Hello

  JpaCacheStore is not an interface, but a class that implements the dumps.

  Best regards

  Robert

• Several subnets on a WAN interface

  We have a WAN connection that Comcast provides us with two different subnets. Currently, the interface is programmed with just the static IP address.

  How can I enter the subnet on which has our static range of IP addresses? I saw this article, but I don't know if that's what I have to do.

  Help!

  Yes, you have found the right article.

• WRT160NL WAN ICMP responses

  Hello, I just bought a WRT160NL and im noticing that my WAN ip's ping'able is possible to disable ICMP responses on the WAN interface.

  Thank you!

  Hmmm...  Are you ping command from a device on the local network / wireless or in fact of the Internet / WAN side?

  I tried rattling from the outside and the setting works correctly as described.

  Ping from the inside always gets responses regardless of the setting.

• ISA550W: WAN redundancy is in charge of the session affinity?

  Hi, we are using the ISA550W WAN failover mode.

  I wonder if we switch to weighted, double-WAN mode is the session affinity is respected? In other words, if we have a PC on the internal network by using an external website, all the following connections will use the same WAN interface, or will be they possible be changing back and forth between WAN different interfaces depending on the load?

  I see no mention of this in the docs, so I am assuming that it is not supported.

  Thank you

  Neil

  Double-WAN mode weighted, a connection from a PC should continue using the same connection WAN for the destination of the original session was created for.  However, if the PC opens another session (i.e. a connection to another site), then this session should use the best connection, which could mean that he uses the WAN2.

  Shawn Eftink
  CCNA/CCDA

  Please note all useful messages and mark the correct answers to help others looking for solutions in the community.

• Pitfalls of severity 1, ' Deny check reverse ICMP trace of.

  Hello

  I have 1.2.0.0/19, but the 1.2.24/whatever is not in use (I did only use the first 24 bit-19 network).

  I have not 172.16.0/whatever on any interface.

  My wan interface is simply called wan.

  These severity 1, I get:

  <161>% 1 ASA-106021: refuse check reverse path 172.16.0.3 to 1.2.24.168 on the wan interface ICMP

  The router (2821) in front of my ASA removes all the packages coming from 10/8, 172.16/16 and 192.168/16 networks of its Wan, so Im do not know how this can be.

  How serious is this is it? What exactly does it mean? How can I know who is doing this so I can prevent it falling into my record?

  Hello 3moloz123,

  How many times do you get? If this happens often enough, you can make a capture of packets outside your ASA and correspond to all traffic from 172.16.0.3.

  If you are certain that no traffic whose source 172.16.0.3 address out of your router, intended for your ASA, having penetrated originally on a different router interface, traffic can be that your ASA with the source address 172.16.0.3, intended for 1.2.24.168, with a MAC of your router, hairpining out of your router, and heading to your ASA. The ASA then drops the package due to the verification of the RPF.

  If your router supports the out ACL, you can apply to the interface which faces the ASA. However, it should only be applied temporarily until you can find the real source of the traffic. Have you done an about 172.16.0.3 (or inside your ASA) packet capture to see if 172.16.0.3 is sending traffic to 1.2.24.168?

  Thank you

  Blayne Dreier

  Cisco TAC team climbing

  * Please see our Podcasts *.

  TAC security show: http://www.cisco.com/go/tacsecuritypodcast

  TAC IPS Media Series: https://supportforums.cisco.com/docs/DOC-12758

• Utm9s double vpn double wan

  Hello world

  is my first time that I'm dealing with a firewall, netgear, anda sicerely I'm having a problem with a configuration.

  I have 2 utm9s and was asked to me to configure mode vpn dual wan dua.

  Let me be more specific, we have 2 site with each of them with 2 connection to public broadband and ip.

  the goal is to make 2 tunnel vpn failover via the wan connection separated 2,.

  the problem is, when I set up the wizard, it says that the configuration is invalid.

  on the manual that I have seen that it is technically possible, but I don't know how...

  Thank you all

  Hello

  As far as I know, setting up two VPN IPSec connections between the same two routers is not the way forward.

  It will not work because the VPN policies will come into conflict with each other ('the destination subnet foo has to go through the VPN bar' rule must be unique).

  To set this up correctly, you must use the substitution inside politics VPN, on both sides. And because you can define only a single IP address as remote endpoint, you must use a FULL domain name.

  The reversal option determines what use of WAN interface as outgoing and remote as endpoint FULL domain name determines which remote IP address is used for communication.

• Impressive transformation slow due to the updating of the user interface

  Hello

  I feel a huge slow down in my test as engine

  I update the display after each test. It consists of a rather

  "simple table" with a subtle change of color and bold

  to indicate the failure or success of the test:

  

  I have also tried several things to determine what routine was

  make the program almost crawling like a snail, here's my

  results:

  No UI refresh: 0m48s (same as Teststand with no updates of the user interface)

  The discount but no page table switch: 1m06s

  Bay of refreshment and switch page: 1m26s

  There are 314 tests, up to 314 redraw and possibly

  switch page 314 to reposition the view. Which gives the

  following user interface refresh costs:

  

  Update of the table: 18 years/314 = 57ms (replacing just a single line, Center to top)

  Switch to page: 20 s/314 = 64ms (bottom right corner)

  Is this really the case? Is there a way to make the refresh of the user interface

  faster? Create two separate loops/threads, one to make

  the test, one for updating the UI asynchronously?

  I understood for an overall picture about different

  widgets, but here I'm 'just' display of channels...

  David Koch

  Well, multi-listbox control is a problem if your change causes access to the muliple property node. For each property node LabVIEW normally does a refresh of the user interface which is very quickly. Fortunately, there is a fairly easy way to fix this.

  Use a node of property for the current VI (just drop a property node and change its class type VI Server-> VI reference) to get the reference of the Panel. Then use another property node connected to your reference of the Panel and select update from the Panel to postpone. Set this value to true before your Listbox (and any other updated user interface) and set the value to false then.

  

• BEFSR41 v. 1 - do not get IP WAN, updated firmware to update

  I can get into the setup on the web.

  I can ping.

  ipconfig indicates that the LAN IP address is correct (192.168.1.1).

  All lights are light up properly.

  My internet connection works correctly (i.e. without the router).

  I've upgraded to the latest firmware (for this version of the router which is v.1, yes it's old).

  "But... under the tab"Status"in the setup, when I type"Release DHCP", then on DHCP renew," the WAN IP address is 0.0.0.0.  How can I force this thing to look for an IP address?

  Just can not know what does not work!

  Any ideas?  Thank you!!!

  (Mod Note: edited title)

  Assuming that you have a good ethernet cable between your BEFSR41 and router upstream (ADSL "modem" or "cable modem"), I guess the router upstream ISP (ADSL "modem" or "cable modem") is looking for a particular MAC address and is to remember your computer (since you've tried things wihtout the BEFSR41).  You have two choices.

  (1) turn off the router upstream (ADSL "modem" or "cable modem"), turn off the BEFSR41, wait a full minute, switch on the router upstream (ADSL "modem" or "cable modem"), let it resync to the line (takes a minute or two), then turn on the BEFSR41, see if it receives an IP address.

  If no, then try

  (2) to clone the MAC address of your computer on the WAN interface, repeat step 1.

  Russ

• WAN PING

  Hello!

  I need to be able to ping the interface wan sonciwall NSA E5600 from a single IP address on the internet. If anyone can help?

  Thank you.

  My English is not very good but I'll try to explain.

  Go to Network Edition - Interfaces, the WAN interface and select ' management: Ping.

  This will create an automatic firewall rule to allow ANY source Ping to the WAN interface.

  Just go to the rules of firewall (from WAN to WAN) this rule and select Edit 'Source' to change the "ANY" to the only address on the Internet you want to. You will need create an address for the desired source IP address object.

  Greetings,

  Jasiel

• Unable to locate the output interface...

  Hello

  I configured a VPN of Lan Lan 2 and it works fine.

  VPN use IKEv2 authentication and certificate.

  

  Computer 1 can reach 2 computer without problem.

  Computer 1, I tried to access the intellectual property inside 2 (ping, AMPS...) but I get this error: unable to locate the output interface

  I do not understand why I can access computer IP 2 but not intellectual property inside 2 people 2 IPs are on the same network and packets go through the same features...

  How can I solve this problem?

  Thanks for your help,

  Patrick

  Hello

  I imagine that the two devices we're talking about are firewalls Cisco? I mean the VPN devices.

  Firewalls Cisco do not allow ICMP behind an interface to another interface on the same device. The only exception is when traffic is coming through VPN and enter a configuration command specific to the device that you're trying to ICMP behind a VPN connection.

  So if 1 computer needs ICMP inside 2 then the firewall with 2 inside interface must be configured with the command

  access to the administration

  Same configuration is required on the other firewall if 2 computer needs ICMP inside 1

  It can also be NAT associated configurations that may require changes, but it depends on the level of your firewall software which we don't know.

  -Jouni