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Port 4500 is blocked, How...

Port 4500 is blocked, How do I allow it?

Created: May 17, 2021 10:20:31Latest reply: Sep 29, 2021 11:53:29 588 21 0 0 0
  Rewarded HiCoins： 0 (problem resolved)
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Please see the configuration below:

How do I change it to allow port 4500?


ssl policy default_policy type server
 pki-realm default
 version tls1.2
 ciphersuite rsa_aes_128_cbc_sha rsa_aes_128_sha256 rsa_aes_256_sha256 ecdhe_rsa_aes128_gcm_sha256 ecdhe_rsa_aes256_gcm_sha384
#
ike proposal default
 encryption-algorithm aes-256 aes-192 aes-128
 dh group14
 authentication-algorithm sha2-512 sha2-384 sha2-256
 authentication-method pre-share
 integrity-algorithm hmac-sha2-256
 prf hmac-sha2-256

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DDSN
Admin Created May 18, 2021 03:23:39

Hi ClarenceEemont,
You can enable port 4500 in the interzone security policy. Refer to the following configuration.
security-policy
  rule name policy1
    source-zone zone-name1
    destination-zone zone-name2
    service protocol udp destination-port 4500
    action permit
security-policy
  rule name policy2
    source-zone zone-name1
    destination-zone zone-name2
    service protocol udp destination-port 4500
    action permit
I hope it helps!

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2#
BetterMing
BetterMing Created May 17, 2021 10:20:47

Hello, dear.
It's nice to meet you in the community.
We're working on getting the right answer for you. Please rest assured that we'll be back with an answer shortly.

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3#
DDSN
DDSN Admin Created May 17, 2021 11:04:57

Hi ClarenceEemont,
Do you want to let go of port 4500 in the security policy?
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4#
ClarenceEemont
ClarenceEemont Created May 18, 2021 01:14:07

I want to allow port 4500 both incoming and outgoing.
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5#
DDSN
DDSN Admin Created May 18, 2021 03:23:39

Hi ClarenceEemont,
You can enable port 4500 in the interzone security policy. Refer to the following configuration.
security-policy
  rule name policy1
    source-zone zone-name1
    destination-zone zone-name2
    service protocol udp destination-port 4500
    action permit
security-policy
  rule name policy2
    source-zone zone-name1
    destination-zone zone-name2
    service protocol udp destination-port 4500
    action permit
I hope it helps!

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6#
ClarenceEemont
ClarenceEemont Created May 22, 2021 11:21:50

What is the command to check if it is blocked in the first place?
display crypto ?
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7#
chenhui
chenhui Admin Created May 22, 2021 11:37:04

Posted by ClarenceEemont at 2021-05-22 11:21 What is the command to check if it is blocked in the first place?display crypto ?
That's a choice.
Besides, you can have a connection test.
If you block the port of the firewall itself, you can also have a telnet test, though I think, you are not doing that.
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8#
ClarenceEemont
ClarenceEemont Created May 24, 2021 00:35:27

Ok. How do I remove those configuration?

These 2 commands dont work:

undo ssl policy default_policy type server
undo ike proposal default
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DDSN
DDSN Created May 24, 2021 01:56:17 (0) (0)
What model is your device? And what version?  
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9#
ClarenceEemont
ClarenceEemont Created May 24, 2021 02:19:18

[V300R019C10SPC300]
#
sysname AR651
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DDSN
DDSN Created May 24, 2021 02:58:02 (0) (0)
The SSL policy default_policy and IKE proposal default are the default values of the device and cannot be deleted.
You can refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100087043&id=EN-US_CLIREF_0176375175&lang=en
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100087043&id=EN-US_CLIREF_0176371488&lang=en  
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10#
ClarenceEemont
ClarenceEemont Created May 24, 2021 03:45:46

Because I suspect it is blocking port 4500.
So what do I do about this?
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chenhui
chenhui Created May 24, 2021 03:48:43 (0) (0)
You mean the firewall blocks the UDP port 4500?
If I'm right, yes, you are right, partially. By default, the firewall blocks all the traffic across itself, so you should enable the security policy to allow that traffic.  
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