Are you still connecting to the unencrypted port? 8008 is for unencrypted. 1443 is the (default) SMF WebSockets Secure port. You might want to check out this list: https://docs.solace.com/Admin/Default-Port-Numbers.htm#Software
Also, you can check the broker’s “Service” tab, to see if the ports are open, and up, and operational.
Hmmm, it doesn’t appear to show operational status, you might have to login to CLI and do show service to see this.
Status
Service TP S C R VRF MsgVpn Port A O Failed Reason
---------- --- ----- ----- --------------- ----- --- --------------------------
SEMP TCP N - - Mgmt 8080 U U
SEMP TCP Y - - Mgmt 1943 U D No Cert
SMF TCP N N N Mgmt 55555 U U
SMF TCP N Y N Mgmt 55003 U U
SMF TCP N N Y Mgmt 55556 U D
SMF TCP Y N N Mgmt 55443 U D No Cert
SMF WEB N - - Mgmt 8008 U U
SMF WEB Y - - Mgmt 1443 U D No Cert <-- my local broker, "D" == down
...