Traffic generated by router IOS inspect IPv6

Similar Questions

• Site to site VPN with router IOS

  I want to create a VPN site-to site on the Internet. On the remote site, aside from the VPN to the head office, there should be no traffic not allowed in internal from the Internet to the network and that there should be no traffic from the internal network to the Internet allowed. The internal network will run a private 192.168.x.x address range.

  I'm going to use a Cisco 2811 router integrated of services on the remote site and this will last an IPSec VPN that will end a hub at Headquarters. I understand that this router has an IOS and IPS firewall built in.

  Would I be right in thinking that because I don't want to have access to the Internet (except VPN) or should I configure IOS firewall features on the router? And there is no point in the configuration of the features IPS wouldn't?

  My thought is that only an entry in list of unique access to deny pi a whole applied inbound to the interface that connects to the Internet would be the best strategy. I think that the command "sysopt connection permit-ipsec" should allow the VPN to form even with the ip address to deny any any ACL (or is it just a Pix command? If Yes, then I have to allow ESP and UDP 500 (ISAKMP) from the public address of the hub at Headquarters to allow the VPN to form wouldn't I?).

  Think I'll probably expand slightly the access list to allow the icmp Protocol, ssh and https traffic from the IP address of firewall seat outside so that I can monitor the remote site and access it safely if the fail VPN.

  And I wouldn't need one access list on the interface connected to the internal network I would like because the range of addresses would be not routable, so they would not be able to initiate connections to the Internet (all the trffic to the remote site is specified under a valuable traffic to bring up the VPN)

  Use one of the IOS Firewall inspect commands or the IPS would be useless and have no effect in this case wouldn't it?

  I really just need to know if the ip address to deny any any ACL on the external interface on the remote site is the best solution (and the simplest), and whether it will be safe.

  We used to use fiewalls Pix for remote VPN site to site, Amazon refuse incoming connections on the external interface by default but now I have been informed that these series 2800 routers will be used later, so I would get my thoughts straight and be able to build safe to do the same work all existing PIX are doing (they are all installed for just the VPN at Headquarters as in) the first paragraph).

  I would like any advice or thoughts on the subject. I don't know there must be a ton of people who put routers for the same purpose.

  Thank you in advance.

  Pete.

  Pete

  I did a lot of implementations site VPN to another using IOS routers. They work very well. Based on my experience I offer these comments and I hope that they will help you:

  -you don't want a list of incoming access on the external interface, but you want more in it than simply refuse an ip. There is no permit-ipsec sysopt connection in IOS so you want to certainly allowed ISAKMP and IPSec/ESP. I suggest that you also want to allow SSH. I would like to allow ICMP but only starting from the address space of the network head end. I do not allow HTTPS since I generally do not allow the http server on the router. If you want HTTPS then certainly enable it. To facilitate the ping and traceroute on the remote I frequently allow icmp echo-reply, timeout and unreachable port from any source.

  -I want to put an inside interface access list. There are certain types of traffic that I don't want to send from the Remote LAN. I have usually refuse any trap SNMP or snmp for LAN devices and refuse out of the local network icmp redirects. I also often configure RPF controls inside interface to catch any device which is misconfigured.

  -If you want to allow SSH when the VPN is not active (and I highly recommend that you do) then you will probably need to configure at least 1 (and maybe more) users and password of the router ID. And you want to configure authentication on the vty use local authentication if the head end authentication server is not available.

  -I'm not clear from your description if you plan to run a dynamic routing via the VPN Protocol. I wish I had a dynamic routing protocol because I want to announce a default route to the remote control via the VPN. I do not locally configure a default route on the remote router. This way if the VPN tunnel is up there is a default route pointing to the tunnel and if the VPN tunnel is not up then there is no local route by default and users on the remote database can not access the Internet. It is a simple and very effective method to ensure that all user traffic must pass through the central site.

  -regarding the routes defined on the remote router, my approach is that I define a static route for the endpoint of the tunnel to allow the tunnel to implement and I set up static routes for the subnet to the head of line I can SSH. And I do not configure other static routes the on the remote router.

  -You probably want to disable cdp on the external interface and also to disable the proxy-arp (and I don't make any ip unreachable).

  -There is frequently a problem when using VPN site-to-site with fragmentation. If a device on the local network sends a frame of maximum size, and then the router needs to add additional headers for IPSec, then the frame is too large and requires fragmentation. I like to use tcp adjust-mss ip to control the chunk size for TCP traffic and avoid any problems with fragmentation.

  -I don't think you want to set up the firewall or IPS from the features of IOS on the 2811.

  I hope that your application is fine and that my suggestions could be useful.

  [edit] after posting my response, I read through your post again and realize that you make to a VPN concentrator. The approach I have proposed on the execution of a routing protocol works for me because I usually have a router IOS in mind. It would not work to connect to a hub.

  HTH

  Rick

• RV180W of WLAN traffic is not routed to WAN

  My WIFI traffic is not routed to WAN.

  I can access LAN and plug to NIR all on the local network. But internet access is not possible. WAN LAN access is allowed.

  I have reset the RV180w to factory settings and also reflashed the firmware to make sure.

  To configure a static route to wlan to wan?

  The routing of the generated RV180 table

  Destination	Entry door	Genmask	Metric	REF	Use	Interface	Type	Flags
  127.0.0.1	127.0.0.1	255.255.255.255	1	0	0	Lo	Static	Upward, gateway, host
  172.16.0.0	0.0.0.0	255.255.254.0	0	0	0	BDG1	Dynamics	UPWARD
  85.0.84.0	0.0.0.0	255.255.252.0	0	0	0	eth1	Dynamics	UPWARD
  127.0.0.0	0.0.0.0	255.0.0.0	0	0	0	Lo	Dynamics	UPWARD
  0.0.0.0	85.0.84.1	0.0.0.0	0	0	0	eth1	Dynamics	Upward, gateway

  Hi Pete,.

  I read your case, it seems that the problem is not related. What I am referring is an external AP connected to the RV180W when the wireless is enabled on the RV180W. Devices that connect to the AP will not be able to access the internet. If the radio on the RV180W is turned off, the devices that connect to the AP can connect to internet.

  -Marty

• Termination of VPN on Pix behind router IOS with private subnet

  OK, basically, I wonder if it is possible to terminate a VPN connection on a Pix 506 Firewall which is behind a router IOS. The public interface of the Pix 506 have a private on a 29 ip address will IOS within the interface. Network is configured as follows:

  Internet as 10Base T

  | (5 public - X.X.X.34. 38)

  | (In WIC-1ENET)

  | (.34 assigned to interface)

  Cisco 1760

  | (Pomp) | (WIC-4PORTSWITCH)

  | | (10.0.0.1 29 on 1760)

  Net private Pix 506

  (192.168.1.0) (10.0.0.2 29 on Pix)

  Now, two internal interfaces of the 1760 are configured to PAT on the IP of the interface of the 1760 and all internet traffic goes perfectly. None of the access lists are currently applied anywhere on the 1760 and a static translation on the 1760 is configured pour.35 to 10.0.0.2 ('public' ip pix). RDP and other services authorized in the pix access list work perfectly well from the outside world when you enter a.35, but if I try to terminate a VPN from a pix 501 for the pix 506 offsite using the Intellectuelle.35 property, it does not work.

  Is it possible to do this type of work setting.

  I realize I could put an external switch to 1760 and run the public subnet directly and individually in the 1760 and Pix 506, however, I really would prefer not no need to do so if it is possible to avoid it.

  Remove the crypto map to the interface on the PIX and reapply.

• tunnel from site to site between router IOS and ASA

  I've combed through the configs on both sides of this tunnel 4 x now and the look of policies as they match. I applied the http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a0080094498.shtml note

  My crypto lsits access are good and my nat on the side of IOS are provided with a map of the route and look good. On the SAA traffic side on the side of the remote tunnel ASA is exempt from NAT. Each side already has a site to another tunnel configuration, so I added the appropriate lines to the existing cryptographic cards which include peers, transform set and match address 'access-list. The polcies crypto isakmp on both ends are compatible. I have attached some configs and debugs (from router IOS), but essentially the newspaper on the SAA starts with the phase 1 is complete and then routing not received notification message, no proposal chosen readings and then it goes to IKE lost the connection to a remote peer, connection, drop table correlator counterpart has failed, no match, the deletion and finally disconnected session reason lost service.

  Their other tunnel stay standing as well as the configuration of remote access vpn connection is good.

  I found a note that recommends checking any access security-list, so I removed the, but no luck, and a Cisco associated with a hub, but had a healthy logic

  Is displayed normally with the

  Cisco VPN 3000 correspondent

  message hub: no proposal

  Chosen (14). This is a result of the

  being host-to-host connections.

  The configuration of the router has the

  IPSec proposals ordered so that the

  proposal selected for the router

  with the access list, but not the

  peer. The access list has a larger

  network including the host that

  a cutting traffic.

  Make the router for this proposal

  hub to router connection

  first in line, so that it corresponds to the

  specific to the host first.

  but that didn't work either.

  Thank you

  Bill

  Bill,

  Take a look at this

  000610: * PCTime 10:42:15.094 Sep 27: ISAKMP: (2039): need XAUTH

  000611: * 10:42:15.094 PCTime sep 27: ISAKMP: node set 920927400 to CONF_XAUTH

  000612: * 27 sep 10:42:15.094 PCTime: ISAKMP/xauth: application XAUTH_USER_NAME_V2 attribute

  000613: * 27 sep 10:42:15.094 PCTime: ISAKMP/xauth: application XAUTH_USER_PASSWORD_V2 attribute

  000614: * 27 sep 10:42:15.094 PCTime: ISAKMP: (2039): launch peer 74.92.97.166 config. ID = 920927400

  000615: * 27 sep 10:42:15.094 PCTime: ISAKMP: (2039): lot of 74.92.97.166 sending peer_port my_port 4500 4500 (R) CONF_XAUTH

  -Other - 000616: * PCTime 10:42:15.094 Sep 27: ISAKMP: (2039): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

  000617: * PCTime 10:42:15.094 Sep 27: ISAKMP: (2039): former State = new State IKE_P1_COMPLETE = IKE_XAUTH_REQ_SENT

  It should not go to extend the authentication. Since you have the client and the L2L on the same router and clients are configured for Extended authentication, the router will ask for XAUTH unless you configure the "No.-xauth" command after the pre-shared key

  Please implement the command:

  ISAKMP crypto keys in clear text address 74.92.97.166 No.-xauth

  Thank you

  Gilbert

• NFS traffic must be routed?

  NFS traffic on a non-routable network, or can it go through a layer 3 device?

  The main question that concerns me is the performance.  I realize that, from a safety point of view, it may be preferable to make it on one vlan not routed.  However in this ad I am answering the question so if keep movement of NFS one VLAN private which is not routed is important from the point of view of performance.  If so, how is it important from a performance perspective?  And what is the best way to predict what will be the impact on the performance of NFS packets sent over a virtual private LAN vs?

  Keep in mind these requirements for NFS routed on vSphere:

  vSphere 5.0 Update 1 supports a L3 routed NFS access to storage when ensure you that your environment meets the following conditions:

  • Using Hot Standby Router Protocol Cisco (HSRP) router IP. If you use a non-Cisco router, remember to use Virtual Router Redundancy Protocol (VRRP) instead.
  • Quality of Service (QoS) allows you to prioritize the L3 NFS traffic on networks with limited bandwidth, or networks who know a congestion. See the documentation of your router for more details business.
  • Follow routed NFS L3 methods recommended by the storage provider. For more information, contact your storage vendor.
  • Disable the management of network i/o resources (NetIORM)
  • If you plan to use systems with top-of-rack switches or dependent I/O device to the switch of partitioning, provider of system compatibility and support.

  In an environment of L3 the following additional restrictions are applied:

  • The environment doesn't support VMware Site Recovery Manager.
  • The environment supports only the NFS protocol. Do not use other protocols such as FCoE storage on the same physical network.
  • The NFS traffic in this environment is not IPv6.
  • The NFS traffic in this environment can be sent only via a local network. Other environments such as WAN are not supported.
  • The environment does not support the distributed virtual switch (DVS).

  Source: http://blogs.vmware.com/vsphere/2012/06/vsphere-50-u1-now-supports-routed-nfs-storage-access.html

• Automatic demotion of the Anyconnect Client (router IOS)

  Hello

  We run a Cisco Anyconnect client with a router IOS environment (2921) as the lead aircraft.

  We have upgraded the client package on the router to the latest version 3.1.13015. After installing this package on the customers, we discovered a bug. Windows-based computers are not able to establish a VPN connection more (authentication and auto-package-level still works, but then an error message is displayed ("unable to cannot" or similar).)

  I returned the package on the router back to an older version (3.1.11004), but is not beeing auto-installe when a client with the new version (buggy) connects.

  Is it possible to configure the router to force a downgrade to the customers, or is the only way to workaround to manually uninstall the package on clients?

  Thank you

  Heinz

  No you can't auto-downgrade the station clients.

  Unfortunately, you will need to uninstall it from the client end, then get the right package (older) of the router.

• Generate image (for iOS app) in assets could Photoshop create the contents.json file at the same time?

  Generate image (for iOS app) in assets could Photoshop create the contents.json file at the same time?

  Hi iolnation,

  I'm sorry, but currently there is no such feature available in Photoshop.

  However you can surely place the feature request here: Photoshop community customer family

  Concerning

  Jitendra

• Traffic to the VPN router IOS NAT tunnel

  I need to configure a VPN tunnel that NATs traffic above him.  I have already established VPN tunnels and NAT traffic.  I did this on a concentrator VPN and ASA, but have seen some places where people say is not possible on a router or I saw real hard evidence that it is.  For example, I use a Cisco 2801 router with 12.4(8a) and advanced security.  This can be quite difficult as the subnet / vlan that we need NAT needs to pass normal traffic on other VPN tunnels and using a NAT on the Internet directly.  Y does it have, any restrictions on it as the IOS version, being a router itself, NAT configuration.  Any help is greatly appreciated.

  Hi James,

  NAT VPN traffic, you can like you do with ASAs on IOS routers.

  If you do, it is that you create an ACL to set traffic to be coordinated, apply the ACL to a NAT rule and a condition that NAT statement with a roadmap to occur only when the traffic will be sent through the tunnel.

  Federico.

• IPS/ACL/ZBF precedence on router IOS

  I have a number of 891 routers deployed for VPN connectivity to a central site. Routers have an ACL so focused on the area of firewall and IPS/IPS configured on their public interfaces. They run IOS universal 15.1.1. They have been for more than six months.

  Last week I started having newspapers like that of the instance of IPS:

  Jan 12 09:51:21 ss260 378: Jan 12 15:51:20.551: % 4-IPS-SIGNATURE: Sig:3041 Subsig:0 SEV:100 package of TCP SYN/DEF [Source that I can't identify me - MY-ROUTER:25-> IP - IP:25] VRF: NONE RiskRating:100

  I know that the ACL interface is processed before the ZBF. I was assuming that IPS happens after the ACL as well, but this package should never have gotten past my ACL. The ACL only allows ESP, IKE, SSH and pings and then only if they are from about a half dozen source IPs. The source of the trigger package is NOT among those permitted.

  Because my ACL does not all traffic not encrypted (with the exception of the pings I generate), I really didn't expect the instance of IPS to see whatever it is likely to trigger an alert, and until last week, it was true.

  So far, all the newspapers are for the same signature SYN/DEF. It is a type of special cases for some reason signature any or can I wait to see alerts whenever a packet that will block anyway, the ACL matches a signature?

  Hello

  First of all, I noticed that packages fell by IPS have the port source and destination 25 - weird ;-)

  If you are interested in the operation with new code CEF order you can check 'show cef interface INTERFACE_NAME IFC_NUMBER', it is reliable and in order, they are done, but perhaps more detail you need ;-)

  Router#sh cef interface fa0/0
  
  FastEthernet0/0 is down (if_number 4)
  
    Corresponding hwidb fast_if_number 4
  
    Corresponding hwidb firstsw->if_number 4
  
    Internet address is 10.1.1.1/24
  
    ICMP redirects are always sent
  
    Per packet load-sharing is disabled
  
    IP unicast RPF check is disabled
  
    Input features: Access List
  
    Output features: Firewall (NAT), Firewall (inspect)
  
    Inbound access list is 101
  
    Outbound access list is not set
  
    IP policy routing is disabled
  
    BGP based policy accounting on input is disabled
  
    BGP based policy accounting on output is disabled
  
    Hardware idb is FastEthernet0/0
  
    Fast switching type 1, interface type 18
  
    IP CEF switching enabled
  
    IP CEF switching turbo vector
  
    IP CEF turbo switching turbo vector
  
    IP prefix lookup IPv4 mtrie 8-8-8-8 optimized
  
    Input fast flags 0x1, Output fast flags 0x0
  
    ifindex 3(3)
  
    Slot  Slot unit 0 VC -1
  
    Transmit limit accumulator 0x0 (0x0)
  
    IP MTU 1500
  
  

  HTH,

  Marcin

• NAT via LAN-to-LAN configuration between router IOS and Cisco VPN 3000

  Hello

  I have the following document on the creation of a virtual LAN2LAN including NAT private network.

  http://www.Cisco.com/en/us/products/HW/vpndevc/ps2284/products_configuration_example09186a00801ae24c.shtml

  It? s easily do this with the hub. Now, I have to set it up on the IOS router, and for this purpose, I can? t find any information. NAT, I have my private network to a single IP address that must be by tunnel as my local network official.

  Anyone have documentation on this szenario? I can? t is not on the OCC.

  Thanks for the support

  Hello.

  Concentrators are very friendly units (IMHO) to VPN with NAT and VPN.

  You build an acl defined traffic over the vpn (110) based on the nat wouldn't

  You create an acl to set what is NAT had (111) and create a NAT statement accordingly

  Here is an example configuration.

  !

  crypto ISAKMP policy 10

  BA 3des

  md5 hash

  preshared authentication

  Group 2

  vpnsrock crypto isakmp key! address x.x.x.x

  !

  !

  Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac

  !

  10 VPN ipsec-isakmp crypto map

  defined peer x.x.x.x

  game of transformation-ESP-3DES-SHA

  match address 110

  !

  interface Fa0

  NAT outside IP

  VPN crypto card

  !

  !

  interface fa1

  IP nat inside

  !

  IP nat inside source list 111 interface fa0 overload

  IP route 0.0.0.0 0.0.0.0 y.y.y.y

  access-list 110 permit ip fa0 - ip network-remote control-generic generic-mask

  access-list 111 allow local-network ip network-remote control-generic generic-mask

  !

• VPN Client TCP connection to router IOS

  Hello

  I try to get a VPN client to connect via TCP to a router. I currently have the router put in place (and work) in using a VPN - UDP. Unfortunately one of the sites I visit will not allow VPN traffic outside of their firewall. I have searched all over the site of Cisco and can't find any information on the IOS configuration to accept TCP - VPN connections. I would like to change the TCP port 80, so my VPN traffic looks like just standard internet browsing my client firewall. Any links/pointer would be greatly appreciated.

  Thanks in advance!

  -Joe

  Take a look at this:

  http://www.Cisco.com/en/us/docs/iOS/12_2t/12_2t8/feature/guide/ftunity.html#wp1310210

  http://www.Cisco.com/en/us/docs/iOS/12_2t/12_2t8/feature/guide/ftunity.html#wp1305478

  http://www.Cisco.com/en/us/docs/iOS/12_2t/12_2t8/feature/guide/ftunity.html#wp1315635

  Please rate if useful.

  Concerning

  Farrukh

• Engineering traffic graphic counter - iphone ios 10.0.1 problem 6 s

  Help, please

  The graph of traffic in IOS 10.0.1 meter is broken and not recognized.

  Y at - it an update for this application?

  No thanks! It will be fixed in the next update. However, we have no ETA for when.

  But it has already been mentioned.

• Firewall router ios commands

  In order to solve problems that result from a problem with a vpn connection, where the router contains an ios firewall, knowing the correct controls are essential. What are the proper commands that should be used for the display of information related to vpn problems? For example, on a pix commands show conn, isa to show her, see the ipsec sa, sh help etc exlate in the determination of the issues. What are some commands which correspond to these and others can be used on a router with a firewall ios?

  Take a look at this link to learn more about the Cisco IOS Firewall.

  http://Cisco.com/en/us/partner/products/sw/secursw/ps1018/tsd_products_support_series_home.html

  HTH

• QUESTION by RV180W: All traffic through the router is considered to be the router IP

  Beta Firmware: 1.0.2.3

  Of Web server log showing the problem:

  2013-03-08 05:39:21 192.168.1.102 POST /somewebpage/somefile.htm - 80 - 192.168.1.1 - 404 0 0 6098 410 457

  QUESTION: 100% of the traffic transmitted via the router takes the IP address of the router when it arrives at the web server level. In this case, 192.168.1.1

  My mail server and FTP servers have adjustments because of the anti-hammering problem this creates.

  Has anyone seen this problem and know of a fix for this?

  @Cisco... Before you suggest that I have to call tech support, I already have. I just had the race and they told me to call level 2 support and do not provide me with a phone number. For some reason, he refused to escalate the call. He simply told me to contact a person of a previous issue, in which they gave me the beta firmware to download and I spent a lot of time on the phone to get there. I don't want to talk to the same person who spoke to my last question.

  Yes, I have seen this problem and reported it. Should have the Bug ID CSCue49377, but I can't verify this, because I don't have access to the bugs database.

  See https://supportforums.cisco.com/thread/2196509