[ale] nslookup OK - No ping or access from proxy client

[Don Thrash]

Hi Guys! My name is Don Thrash. I have been using Linux for quite a 
while but the head isn't what it used to be. So I am looking for a 
little help.  I am setting up a proxy server on the following machine.  
I had it working a week ago.  Now I am totally confused.  The issue is 
the proxy client does not get routed to the networks (local or 
internet). Ping of google.com from the client returns the correct ip 
address, but the ping returns timed out.  Typing in the ip returns timed 
out.  The client is a Windows 10 box, I also tried my Ubuntu laptop with 
the same result.

Ubuntu 22.04.2 LTS (GNU/Linux 5.19.0-43-generic x86_64)

wlx002522451a1f - WiFi from house to shed 192.168.1.0

enp0s25 - Wired shed network - 10.42.0.0

dont at Shed2:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    600 0        0 
wlx002522451a1f
10.42.0.0       0.0.0.0         255.255.255.0   U     100 0        0 enp0s25
192.168.1.0     0.0.0.0         255.255.255.0   U     600 0        0 
wlx002522451a1f

  sudo iptables -L
[sudo] password for dont:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Network connections from server work correctly.

  ifconfig
enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
         inet 10.42.0.1  netmask 255.255.255.0  broadcast 10.42.0.255
         inet6 fe80::a88e:9d27:e490:8c8d  prefixlen 64  scopeid 0x20<link>
         ether 00:1e:4f:c7:0a:c0  txqueuelen 1000  (Ethernet)
         RX packets 26627  bytes 2224357 (2.2 MB)
         RX errors 0  dropped 0  overruns 0  frame 0
         TX packets 14280  bytes 9276316 (9.2 MB)
         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
         device interrupt 21  memory 0xfebe0000-fec00000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
         inet 127.0.0.1  netmask 255.0.0.0
         inet6 ::1  prefixlen 128  scopeid 0x10<host>
         loop  txqueuelen 1000  (Local Loopback)
         RX packets 10037  bytes 912910 (912.9 KB)
         RX errors 0  dropped 0  overruns 0  frame 0
         TX packets 10037  bytes 912910 (912.9 KB)
         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlx002522451a1f: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
         inet 192.168.1.164  netmask 255.255.255.0  broadcast 192.168.1.255
         ether 00:25:22:45:1a:1f  txqueuelen 1000  (Ethernet)
         RX packets 235508  bytes 162967763 (162.9 MB)
         RX errors 0  dropped 6  overruns 0  frame 0
         TX packets 183068  bytes 31113448 (31.1 MB)
         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0