SRP547W external ping

Similar Questions

• Impossible to external ping

  Hello

  I am new to Cisco PIX so please excuse me for my very limited knowledge of PIX configuration.

  We have an ADSL router doing NAT.

  Its internal interface is 192.168.5.1

  The ADSL router is connected to the external interface of the PIX 506th (192.168.5.3)

  The internal interface of the PIX (192.168.6.1) is connected through the LAN

  The PIX can ping external.

  The LAN can ping to the internal interface of a PIX.

  The local network cannot ping the external interface of the PIX or external ping

  Here is the answer to try to ping outside the local network, and I placed the config below output. I can see that the translation is not be done properly but I can understand why t.

  Any ideas?

  136:-Interior ICMP echo request: 195.16.220.1 ID = 512 seq = 33792 length = 40 192.168.6.2

  137: ICMP echo request: translate inside: 192.168.6.2 outside: 192.168.6.2

  138:-Interior ICMP echo request: 195.16.220.1 ID = 512 seq = 34048 length = 40 192.168.6.2

  139: ICMP echo request: translate inside: 192.168.6.2 outside: 192.168.6.2

  140:-Interior ICMP echo request: 195.16.220.1 ID = 512 seq = length 34304 = 40 192.168.6.2

  141: ICMP echo request: translate inside: 192.168.6.2 outside: 192.168.6.2

  142:-Interior ICMP echo request: 195.16.220.1 ID = 512 seq = 34560 length = 40 192.168.6.2

  143: ICMP echo request: translate inside: 192.168.6.2 outside: 192.168.6.2

  See the pix1 conf (config) #.

  : Saved

  : Written by fred at 12:41:35.726 GMT Wednesday, October 5, 2005

  6.3 (4) version PIX

  interface ethernet0 car

  Auto interface ethernet1

  ethernet0 nameif outside security0

  nameif ethernet1 inside the security100

  enable the encrypted password xxxxxxxxxxx

  xxxxxxxxxxx encrypted passwd

  hostname pix

  domain ciscopix.com

  clock timezone GMT 12

  fixup protocol dns-length maximum 512

  fixup protocol ftp 21

  fixup protocol h323 h225 1720

  fixup protocol h323 ras 1718-1719

  fixup protocol http 80

  fixup protocol they 389

  fixup protocol rsh 514

  fixup protocol rtsp 554

  fixup protocol sip 5060

  fixup protocol sip udp 5060

  <--- more="" ---="">

  fixup protocol 2000 skinny

  fixup protocol smtp 25

  fixup protocol sqlnet 1521

  fixup protocol tftp 69

  names of

  access-list acl_out permit icmp any one

  pager lines 22

  opening of session

  timestamp of the record

  recording console critical

  debug logging in buffered memory

  recording of debug trap

  history of logging of information

  ICMP allow all outside

  ICMP allow any inside

  Outside 1500 MTU

  Within 1500 MTU

  external IP 192.168.5.3 255.255.255.0

  IP address inside 192.168.6.1 255.255.255.0

  alarm action IP verification of information

  alarm action attack IP audit

  location of PDM 192.168.6.21 255.255.255.255 inside

  <--- more="" ---="">

  location of PDM 192.168.6.2 255.255.255.255 inside

  PDM 100 debug logging

  history of PDM activate

  ARP timeout 14400

  NAT (inside) 0 192.168.6.0 255.255.255.0 0 0

  Access-group acl_out in interface outside

  Route outside 0.0.0.0 0.0.0.0 192.168.5.1 1

  Timeout xlate 01:00

  30:00:00 conn Timeout half closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225

  H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00

  Timeout, uauth 0:05:00 absolute

  GANYMEDE + Protocol Ganymede + AAA-server

  AAA-server GANYMEDE + 3 max-failed-attempts

  AAA-server GANYMEDE + deadtime 10

  RADIUS Protocol RADIUS AAA server

  AAA-server RADIUS 3 max-failed-attempts

  AAA-RADIUS deadtime 10 Server

  AAA-server local LOCAL Protocol

  Enable http server

  http 192.168.1.21 255.255.255.255 inside

  <--- more="" ---="">

  http 192.168.6.2 255.255.255.255 inside

  No snmp server location

  No snmp Server contact

  SNMP-Server Community public

  No trap to activate snmp Server

  TFTP server inside the 192.168.6.21 c:\tftp

  enable floodguard

  string fragment 1 outside

  Telnet timeout 5

  SSH 192.168.6.0 255.255.255.0 inside

  SSH timeout 5

  Console timeout 0

  fred xxxxxxxx encrypted privilege 15 password username

  Terminal width 80

  Cryptochecksum:xxxx

  pix1 (config) #.

  Thanks for your time.

  Internet <-->router adsl <--192.168.5.0-->pix <-->192.168.6.0

  assuming that the topology above is accurate, a route must be added on the adsl router.

  originally, you mentioned that a pc behind the pix cannot get any response from the echo of the internet.

  Imagine that an echo response happens on the router adsl with destination 192.168.6.0. now, the adsl router will then attempt to determine the next hop. However, it has no route to the pix to the 192.168.6.0. as a result, the adsl router will use the default gateway that is the internet, so the echo response can never be received by the pc behind the pix.

• PSR 527W - external WAN ping port

  Hello

  As a test of raw it is convenient for us to external ping tne WAN port on the SRP 527W, gives us a quick idea of the question of if it will respond.

  Can someone advise how we configure the SRP 527W for this purpose? FYI, we have the inbulit RPS firewall is turned on.

  See you soon,.

  Dale.

  Hi Dale, under Network-> firewall-> firewall filter Configuration disable the "internet filter requests anonymous."

  -Tom
  Please mark replied messages useful

• RV120W ROUTER/firewall "cannot display the webpage".

  I have a small LAN using a T1 of One Communications line.  Static IP address.

  30 workstations.  Windows 2003 DHCP server.

  Installed new RV-120W firewall router last week replacing an old unit of Netgear.

  Configure VPN tunnel on the unit, have remote access for about 10 users.

  This part works well.  A little slow, but acceptable.

  My question: is internet connectivity on internal LAN in and out.  She's very agitated.

  Upload and download speed has been consistent (~2.5M/sec)

  External Pings see the very minimal loss.

  Users have seem intermittent loss of web streams and corrupt downloads.  web activity 90% is ok, but we continue then getting "cannot display the webpage error."

  NSLOOKUP displays the DNS, but occasssionally "TIMEOUT" occurs.

  I got the provider perform loopback tests and replace WIC on CISCO 1841 router T1, but I still see the behavior.

  I see by reading other forms, that it is an ongoing problem with the routers of RV.

  My settings...

  Public static IP / DNS on the router.

  Reverses the MTU to 1500.  I have adjusted downwards by increment to 1350.

  Windows Server 2003 has RV120W address as the router / gateway.

  T1 to CISCO 1841 ROUTER... to CISCO RV120W... to LAN CISCO SLM248G interrrupteurs (2).

  I do not configure all redirects the port.

  I continue the line tests on my end, but as I said this problem was not existing with Netgear unit.

  Please indicate any change of setting / suggestions.

  Hi Jason et al...

  In my view, the technician are now experiencing a UDP on the Rv120W question.

  The internal discussions on the issue of R & D and development seems to be;

  1. default on RV120W a UDP Flood attack control that limit 25 UDP by customer connections in one case there, IE to a particular instance of time a PC behind the router can establish only 25 UDP Transactions, if we exceed router drops packets UDP.

  2. we have a script that sends dns queries to search at a very high pace that the router deletes the entries in the UDP, in this way, that we accumulate the UDP entry in the router table (IE 25 entries)

  3. once 25 limit is reached, we are unable to resolve DNS queries, in addition to using the script or by using the browser.

  4. in real-world scenarios it could be a PC behind the router and open a website where all the elements on the Web page are related to the different website, if you open this type of Web site, it may have links to over 25 different site and clog the table routers UDP for the PC and the user may not able to solve queries DNS additional and impossible of browse all new Web sites. This inability to browse happens until the UDP entries on the router time dead and are deleted.

  5. this limit of 25 is because of the feature called raw block UDP on the router that is enabled by default.

  6. once we disable the block UDP Flood, router does not check 25 connections limit UDP and dns resolution is continuous, without interruption.

  This is a customers in the area could be to see breaks in the DNS resolutions and browse site failed.

  Some customers talked explicitly about DNS failures.

  Jason I see that you have placed a service call, so I hope that CCORAL who posted August 15 should be helping you.

  So people, if the technician finds the problem not a hardware issue requiring an RMA, the technician will intensify the call for our people of level 2 in the Irvine case, probably CCORAL.  You will get a help to solve this problem.

  The small business support center, should be aware of the problem. Please do not hesitate to show them this announcement, I am ready to discuss with them to get things moving.

  Yet once, if you have not already done, please contact the HWC and place a request for service and keep a copy of this number they give you as a reference (you can need). My apologies for the inconvenience that you all had.

  concerning

  Dave Hornstein

  Small businesses, channel system engineer

  Cisco - Research Triangle Park.  U.S..

  http://www.Cisco.com/en/us/support/tsd_cisco_small_business_support_center_contacts.html

• ipconfig/all and the ping command is not recognized, error: internal or external command.

  Original title: back command.
   
  Then I run ipconfig/all and show the command ping at the command prompt ipconfig/all error is not
  recognized as internal or external, command an executable program or a file of commands in windows xp professional sp3

  Hello

  These two commands are protected against accidental removal by Windows, that is if they get deleted Windows will work just add in the C:\Windows\System32 folder.

  At the command prompt, try to change this folder by typing cd C:\Windows\System32 (and then hit return) before trying the command ipconfig or ping.

  If this lets then run you your 'path' is probably messed up.

  You may first want to set a system restore point...

  http://support.Microsoft.com/kb/948247

  .. .in case spoil you things and that you want to restore to it...

  http://support.Microsoft.com/kb/306084

  ... then...

  • Hold down the Windows (between Ctrl and Alt) key and press Pause break
  • Click the Advanced tab
  • Click the Environment Variables button
  • In the section system variables, click on path (you may need to scroll)
  • Click the button change

  Paths are separated by semicolons (;), is a path to % SystemRoot%\system32? If not, add one (make sure to separate with semicolon). Click OK (three times) to get out. Restart the computer and try again without the cd above command.

  Tricky

• Cisco 5505, inside, I cannot ping the external IP of the router, but inside I can ping anything else

  Hello

  5505 Cisco's internal IP: 10.10.0.1 static, securty level 100

  External IP of Cisco 5505: 36.X.X.23 Dhcp, 0 security level

  of within peut all host external example ping by host 10.10.0.3 to google.com

  inside peut ping all domestic example of the host, host 10.10.0.3 to 10.10.0.5 included the internal IP of Cisco 10.10.0.1

  inside peut ping ip network address different on the same network from my router external example the host 36.x.x.25

  cannot ping inside the IP 36.X.X.23?

  from outside peuvent ping the IP 36.X.X.23

  outside peuvent ping different extenal network 36.X.X.X network ip

   
  How can I ping the 36.X.X.23 of the Interior, any suggestions?

  It's called background management which is not supported in the ASA

  https://Tools.Cisco.com/bugsearch/bug/CSCtd86651

  That's why is not and this will never work the ASA design does not

  It will be useful.

• cannot ping external hosts to site 2 site vpn

  Hi all

  I have 2 sites configured as VPN L2L back to my ASA5520. a site uses a PIX525 and the other an ASA5505. I can access all the resources on my netwrok private without a problem and all traffic from remote sites is "protected". the issue I'm having is that I can not ping and external guests. for example, if I try to ping 4.2.2.1 emanating from a host on a remote site it times out. I can ping no matter what resource a my networks 'private' to any site without problem. any suggestions? Thank you.

  If you are relying on access to Internet through the tunnel L2L (because you're tunnel everything), then you need to...

  (1) configure uturn and outside nat for the remote network on the ASA station so traffic can leave the same interface it came with a public IP address for the Internet:

  NAT (outside) 99

  Global interface 99 (external)

  permit same-security-traffic intra-interface

  Or

  (2) put in place a tunnel default gateway pointing to an internal router which has access to the internet

  Route inside 0.0.0.0 0.0.0.0 in tunnel

  -heather

• How to get the time limit requested when ping external interface FW IOS?

  After I install CBAC on an IOS Firewall Router and deny all incoming ICMP request, I ping the external interface of the router and I get "response from the (the external interface IP): the unreachable destination network. I think it's quite risky because my IP from the router's external interface is known. How can I set up such that I can get "Timeout asked" instead?

  Hello

  Try not to implement the "unreachable no ip" of your external interface.

  This command prevents the router ICMP unreachable sending at all.

• Unable to ping a website in command line with an error message: 'ping is not recognized as an internal or external command.'

  Original title: ping does not work

  In the cmd box when I try to ping from a site, I get a message saying 'ping is not recognized as an internal or external command.'

  I entered the command as follows: Office > ping www.yahoo.com

  Dan Calic, salvation

   

   

  Thanks for posting your question in the Microsoft Community.

  I understand that you are unable to ping a website in command line with an error message: 'ping is not recognized as an internal or external command.' Correct me if I'm wrong.

  I imagine the inconvenience that you are experiencing. I will certainly help the question of fixing.

  To help you suggest several steps to solve the problem, I would appreciate if you could answer the following questions:

  1 are you facing problems when accessing Internet?

  2. have you made any recent hardware or exchange of software on your computer before the show?

  Please follow the steps and check the question below:

  a. click Start, and then type the three letters cmd in the search box and then right-click on command prompt and click run as administrator.

  b. type these commands and press enter after each:

  dir %SystemRoot%\System32\ping.exe

  path %path%;%SystemRoot%\System32

  Ping www.yahoo.com

  c. a report.

  Your response is very important for us to ensure a proper resolution. Please get back to us with the information above to help you accordingly.

• adjustment rule - how to allow internal pc ping external ip address?

  I eventuall put in place the PIX501 and everything seems fine except the internal pc cannot ping the DNS server and the external ip address. Still exceeded demand. I allow all outbound icmp traffic and especially udp traffic. I have also allow a part of tcp traffic and reject all others. We have access to the internet but just when ping external IP and DNS, for example, when I ping www.google.com, it can resolve ip from google, but procrastination requst.

  What are the rules that I set up to allow internal pc ping external ips?

  See you soon

  ICMP incoming via the PIX is denied and outgoing ICMP is allowed, but the incoming response is denied by default allowed both it as below:

  access-list 200 permit icmp any any echo or echo-reply

  Access-group 200 in external interface

  Kind regards

  Mehrdad Arshad Rad

• Cannot access internet or ping external site names

  I have a problem with a cisco asa 5505

  I'm unable to access the internet from any computer on the local network. I can access the network from outside, in fact I have rdp access to a server that has been installed with it. I can also ping external IP addresses, but no names. Here is the config. For any help or suggestion is appreciated. I'm starting to believe it's a DNS issue?

  : Saved
  :
  ASA Version 8.2 (5)
  !
  My - ASA host name
  domain monsite.fr
  activate the password * encrypted
  passwd * encrypted
  names of
  name description 192.168.10.x Srv - 192.168.10.x server
  name 97.7x.xxx.xx2 outdoor-home
  !
  interface Ethernet0/0
  switchport access vlan 2
  !
  interface Ethernet0/1
  !
  interface Ethernet0/2
  !
  interface Ethernet0/3
  !
  interface Ethernet0/4
  !
  interface Ethernet0/5
  !
  interface Ethernet0/6
  !
  interface Ethernet0/7
  !
  interface Vlan1
  nameif inside
  security-level 100
  192.168.10.x 255.255.255.0 IP address
  !
  interface Vlan2
  nameif outside
  security-level 0
  IP outside-host 255.255.255.252
  !
  passive FTP mode
  clock timezone CST - 6
  clock to summer time recurring CDT
  DNS server-group DefaultDNS
  domain monsite.fr
  object-group service rdp tcp
  Description Office remotely
  EQ port 3389 object
  inside_access_in list extended access permit tcp any any eq 3389
  inside_access_in list extended access permit tcp any any eq www
  inside_access_in list extended access permit icmp any one
  inside_access_in list extended access udp allowed any any eq ntp
  outside_access_in list extended access permit tcp any any eq 3389
  outside_access_in list extended access permit icmp any any echo response
  pager lines 24
  asdm of logging of information
  Within 1500 MTU
  Outside 1500 MTU
  ICMP unreachable rate-limit 1 burst-size 1
  don't allow no asdm history
  ARP timeout 14400
  Global 1 interface (outside)
  NAT (inside) 1 192.168.10.0 255.255.255.0
  static (inside, outside) interface tcp 3389 Prov-Srv - 192.168.10.9 3389 netmask 255.255.255.255
  inside_access_in access to the interface inside group
  Access-group outside_access_in in interface outside
  Route outside 0.0.0.0 0.0.0.0 97.7x.xxx.xx1 1
  Timeout xlate 03:00
  Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
  Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
  Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
  Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
  timeout tcp-proxy-reassembly 0:01:00
  Floating conn timeout 0:00:00
  dynamic-access-policy-registration DfltAccessPolicy
  Enable http server
  http 192.168.10.0 255.255.255.0 inside
  No snmp server location
  No snmp Server contact
  Server enable SNMP traps snmp authentication linkup, linkdown cold start
  life crypto ipsec security association seconds 28800
  Crypto ipsec kilobytes of life - safety 4608000 association
  Telnet 192.168.10.0 255.255.255.0 inside
  Telnet timeout 5
  SSH timeout 5
  Console timeout 0

  a basic threat threat detection
  Statistics-list of access threat detection
  no statistical threat detection tcp-interception
  WebVPN
  !
  class-map inspection_default
  match default-inspection-traffic
  !
  !
  type of policy-card inspect dns preset_dns_map
  parameters
  maximum message length automatic of customer
  message-length maximum 512
  Policy-map global_policy
  class inspection_default
  inspect the preset_dns_map dns
  inspect the ftp
  inspect h323 h225
  inspect the h323 ras
  inspect the rsh
  inspect the rtsp
  inspect esmtp
  inspect sqlnet
  inspect the skinny
  inspect sunrpc
  inspect xdmcp
  inspect the sip
  inspect the netbios
  inspect the tftp
  Review the ip options
  !
  global service-policy global_policy
  context of prompt hostname
  no remote anonymous reporting call
  Cryptochecksum:eea8b18bfa5f73b832857913a77486d1
  : end

  you do not allow any DNS traffic leaving your network. Add the following and try again:

   access-list inside_access_in extended permit udp any any eq 53 access-list inside_access_in extended permit tcp any any eq 53

  In general, it was not necessary to allow DNS to the entire internet, only for the DNS servers used by your internal systems.

  Some other improvements to your config:

  (1) If you configure icmp-inspection, you can remove the ACE that allows to echo-replys unconditionally in your network:

   policy-map global_policy class inspection_default inspect icmp no access-list outside_access_in extended permit icmp any any echo-reply 

  (2) the outside AS to WHAT RDP could focus a little bit more:

   access-list outside_access_in extended permit tcp any host 97.7x.xxx.xx2 eq 3389 

• How can ping virtual machine on VMware Server external network?

  In the Vmware infrastructure products you can can be crazy from the outside through their individual networks connections, which is a good thing... lol

  How this is possible on VMware Server when guests use the VMnet8 network that uses NAT?

  In many scenarios, the use of bypass is prohibited due to the policy defined at the level of the external switch, but it is still necessary for the basic functionality of ping. Otherwise, how they would be able to know if a virtual machine is actually up to who answered the questionnaire on the network without entering actual connections to such hosts?

  You're right - that's how NAT works (whether via a service such as the VMware NAT service software or a hardware router/firewall NAT).  All computers behind the NAT server are hidden from the outside world (unless you map specific ports to the specific IP address of a computer)... they are so NOT to pings from the outside.

• I can ping external IPs, but cannot browse Internet on Cisco 897VA sites

  I have a cisco 897va router I use a laboratory. I have a very basic config and am able to ping Web sites but for some reason any cannot browse one of them while connected to this router. The way it is currently Setup is port Gigabit 8 (WAN port) is connected to one of the switchports on my linksys router (connected to the cable modem), and I have a computer connected to the switchport Gigabit router 897VA Ccisco 0. Interface Vlan 1 is configured as my default gateway with the ip address of 192.168.1.1/24. I have a pool dhcp with the implemented network 192.168.1.0/24 which clients receive the ip configuration.  I'd appreciate any advice someone here can provide. Here is my config. I took off with a default interfaces (no) configurations in them for ease of reading:

  C897VA #show run

  Building configuration...

  Current configuration: 1985 bytes

  !

  ! 19:14:01 EST configuration was last modified Sunday, December 1, 2013

  ! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

  ! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

  version 15.2

  tcp KeepAlive-component snap-in service

  a tcp-KeepAlive-quick service

  horodateurs service debug datetime msec

  Log service timestamps datetime msec

  no password encryption service

  sequence numbers service

  !

  hostname C897VA

  !

  boot-start-marker

  boot-end-marker

  !

  !

  !

  No aaa new-model

  clock timezone IS - 5 0

  Crypto pki token removal timeout default 0

  !

  !

  no ip source route

  the 5 IP auth-proxy max-login-attempts

  max-login-attempts of the IP 5 admission

  !

  !

  !

  IP dhcp excluded-address 192.168.1.0 192.168.1.5

  !

  IP dhcp INTERNAL pool

  import all

  network 192.168.1.0 255.255.255.0

  default router 192.168.1.1

  domain cedanolab.com

  Server DNS 8.8.8.8 4.2.2.2 4.2.2.3

  !

  !

  8.8.8.8 IP name-server

  IP cef

  !

  !

  udi pid C897VA-M-K9 sn license *.

  !

  !

  !

  VDSL controller 0

  !

  !

  !

  ATM0 interface

  no ip address

  No atm ilmi-keepalive

  !

  interface Ethernet0

  no ip address

  !

  interface GigabitEthernet0

  no ip address

  !

  !

  interface GigabitEthernet8

  DHCP IP address

  NAT outside IP

  IP virtual-reassembly in

  automatic duplex

  automatic speed

  !

  interface Vlan1

  IP 192.168.1.1 255.255.255.0

  no ip redirection

  no ip proxy-arp

  IP nat inside

  IP virtual-reassembly in

  !

  IP forward-Protocol ND

  no ip address of the http server

  no ip http secure server

  !

  the IP nat inside source 1 list overload of the GigabitEthernet8 interface

  !

  access-list 1 permit 192.168.1.0 0.0.0.255

  !

  !

  Line con 0

  Synchronous recording

  line to 0

  line vty 0 4

  opening of session

  transport of entry all

  !

  Scheduler allocate 20000 1000

  !

  end

  C897VA #.

  Thank you in advance.

  Jeremias,

  If I understand you correctly, the PC connected to the Cisco router can resolve names to IP addresses and is able to ping outside the destination, but you can not browse the internet. Is this correct?

  I think an MTU problem. Even if your router connects Ethernet segments only, there may be an additional encapsulation somewhere along the way, by adding an extra burden to your packages and possibly causing them to become oversized. Can you try to add the ip tcp adjust-mss 1360 to your interface Vlan1 please and test connectivity again?

  Also, what exact IP address you receive via DHCP on your GigabitEthernet8 interface? Ideally, can you like after the output of the show ip route and show ip cef between your Cisco router? Also, please include the output of commands show ip cef 8.8.8.8 detail .

  Best regards

  Peter

• inside the host does not ping external host in transparent mode

  Hi all I need urgent help on this pls I have host on ip add 1.1.1.2/24 connected inside interface of the pix with ios 7.0 in transparent mode. and the external interface of the pix connected to a router IP 1.1.1.1/24.i enabled icmp inspection.i can see the router arp entry into the host and the host arp entry in the mac address router.both are well learned by the pix. no traffic flow form the host to the router. There is no access on the pix of pix.the list does not create an arp entry in the stange very pix. I tried to manuaaly add the entry:

  ARP in 1.1.1.2 0011.d80d.f6ac it gives an error <1.1.1.2>not allowed. network address I do not get it .my question is why the pix don't is not create entry arp. what could be the problem. could someone pls help me with this thanks pls.

  Assane

  Lol this is not as you mentioned. I'll explain the communication all in detail. I hope this helps.

  Assumptions:

  PIX configured to L2, with outside as 0 and inside as 100. insidehost on inside the network and external network configured outsidehost.

  scenario 1

  ==========

  If pix is not configured with the IP address, all IP packets are dropped and syslog Id 322004: no management IP address configured for transparent

  Firewall is saved. So lets see how communication works on L2

  outsidehost tries to communicate with insidehost. ARP request is from outsidehost and is sent through dissemination and it is received by PIX and sent to the inside network, without change.

  Return of InsideHost and the response is sent through to the outsidehost. When you see the arp on the outsidehost and the insidehost entries you will find the corresponding arp entries.

  PIX will forward arp request/reply.

  You can give the command "local host" and you won't see any entries created on the box.

  2nd scenario

  ==========

  An ip address is configured on pix and insidehost starts communication with the outsidehost. Communication is from top to bottom and will allow pix.

  No change in the behavior of the ARP. Exactly as mentioned in scenario 1.

  Given that the IP address is provided to the box, entered the local host is created and formed connection for traffic from insidehost to outsidehost.

  Connection between outsidehost and insidehost is denied because there is no access list to allow traffic from low to high.

  You can give the command "local host" and you will see the entrance to insidehost, outsidehost.

  3rd scenario

  =============

  An ip address is configured, created in order to allow the circulation of outsidehost insidehost and applied to the external interface of access list access list.

  No change in the behavior of the ARP. Exactly as mentioned in scenario 1.

  Given that the IP address is provided to the box, entered the local host is created and formed connection for traffic from outsidehost to insidehost.

  Access list being present to allow the traffic, the connection is allowed and entry is created in the box.

  Hope that the foregoing erases the entire communication L2 and the communication of different security levels.

  I hope this helps.

• Can ping but not connect to the system in real time

  Hi all

  I have a funny glitch that has arisen recently.  I have a PXI chassis running an RTOS that I am able to reach with LV and MAX when I sit on the local network.  I have the chassis in a DMZ, so she is directly exposed via the external IP network.  Recently, I had to reformat the hard drive and now, for some reason I can't access the system via MAX or external LV (I have before).  I ping the instrument, but it seems not respond with MAX or LV there is no error on the target and the target is not currently a start of VI.  Someone at - it ideas?

  Thanks, m

  NM - I don't know what was going on, but everything seems fine now... I had the wrong IP today.

  For those who are interested, this is a report of nmap on intellectual property will look like if you do a scan of 1-10 k on a PXI chassis located on a DMZ (I'm not pass all other ports, but some ports such as 80 react on the machines on the network):

  

  Thank you for your attention.  m