firewall tracert

Created: Sep 16, 2019 14:37:16Latest reply: Sep 20, 2019 14:01:22 117 4 1 2
  Rewarded Hi-coins: 0 (problem resolved)

I want to use tracert to view the  route direction, but * * * is always displayed when passing through the firewall,

As shown in the following

 

PC>tracert 10.2.2.20

 

traceroute to 10.2.2.20, 8 hops max

(ICMP), press Ctrl+C to stop

1 10.1.1.1   13 ms  <1 ms  14 ms

2   *  *  *

3 10.0.23.2 15 ms  <1 ms  12 ms

4 10.2.2.20   16 ms  <1 ms  15 ms

1

 

How can I see all the tracert output


  • x
  • convention:

Featured Answers
Popeye_Wang
Admin Created Sep 16, 2019 14:43:11 Helpful(0) Helpful(0)

Hi Sprout,

By default, for security reasons, an interface is disabled to send ICMP Time Exceeded message, 
you need to use the icmp ttl-exceeded send command to enable the function.

In addition, please pay attention to the relevant two commands.
icmp host-unreachable send - this command enables transmitting the ICMP host-unreachable packets;
undo firewall defend tracert enable - if (firewall defend tracert enable)command is configured, an FW discards ICMP timeout packets, UDP timeout packets, or destination port unreachable packets. 
  • x
  • convention:

All Answers
Popeye_Wang
Popeye_Wang Admin Created Sep 16, 2019 14:43:11 Helpful(0) Helpful(0)

Hi Sprout,

By default, for security reasons, an interface is disabled to send ICMP Time Exceeded message, 
you need to use the icmp ttl-exceeded send command to enable the function.

In addition, please pay attention to the relevant two commands.
icmp host-unreachable send - this command enables transmitting the ICMP host-unreachable packets;
undo firewall defend tracert enable - if (firewall defend tracert enable)command is configured, an FW discards ICMP timeout packets, UDP timeout packets, or destination port unreachable packets. 
  • x
  • convention:

Sprout
Sprout Created Sep 16, 2019 14:49:39 Helpful(0) Helpful(0)

So can I use the icmp ttl-exceeded send command on the router/switch so that the tracert can't find the Local Device?
  • x
  • convention:

Popeye_Wang
Popeye_Wang Admin Created Sep 16, 2019 14:50:14 Helpful(0) Helpful(0)

Posted by Sprout at 2019-09-16 14:49 So can I use the icmp ttl-exceeded send command on the router/switch so that the tracert can't find ...
Sure.
  • x
  • convention:

user_3564465
user_3564465 Created Sep 20, 2019 14:01:22 Helpful(0) Helpful(0)

Hi My Device has been off since yesterday and it's need previous email and password and I forgot it
  • x
  • convention:

Reply

Reply
You need to log in to reply to the post Login | Register

Notice Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."
If the attachment button is not available, update the Adobe Flash Player to the latest version!
Login and enjoy all the member benefits

Login and enjoy all the member benefits

Login