Environment
HAProxy = One Node (version 2.4.22-3.el9, community edition)
OS = RHEL9
IP = 10.100.51.94

Backend Server = Two Nodes
OS = RHEL 8
Node01 IP = 10.100.51.68
Node02 IP = 10.100.51.70

Firewalld = disabled
SELINUX = disabled

HAPROXY configuration

defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000

#---------------------------------------------------------------------

main frontend which proxys to the backends

#---------------------------------------------------------------------
#frontend main

bind *:5000

acl url_static path_beg -i /static /images /javascript /stylesheets

acl url_static path_end -i .jpg .gif .png .css .js

use_backend static if url_static

#: default_backend app

frontend iris_core01
bind 10.100.51.94:4444
default_backend core01

backend core01

mode tcp

    balance roundrobin
    server core01 10.100.51.68:22
    server core02 10.100.51.70:22

frontend iris_core
bind 10.100.51.94:3333
default_backend core

backend core
mode http
balance roundrobin
server core01 10.100.51.68:6655
server core02 10.100.51.70:6655

QUERY
When I telnet to haproxy from a machine(10.100.51.114) thru these commands (telnet 10.100.51.94 3333 and telnet 10.100.51.94 4444) , I can see the connection request on haproxy machine but the request are not then forwarding to the backend machines

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