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

Boris Borisov bugyatl at gmail.com
Sun Jun 11 01:08:32 EDT 2023


I haven't done squid in 20 something years. Used it to cache some web pages
so traffic would be lower throughout dialup modem :)



On Sun, Jun 11, 2023, 06:34 Chuck Payne via Ale <ale at ale.org> wrote:

> Make sure you have your IP Range allowed to use Squid, that a common
> mistake.
>
> On Sat, Jun 10, 2023 at 9:50 PM Don Thrash via Ale <ale at ale.org> wrote:
>
>> Thank you!! That was a bit of help.  Got me thinking .  Squid access log
>> is loaded with:  TCP_DENIED/403.  Now going on a trip down that rabbit hole.
>>
>> Don Thrash
>>
>>
>> On 6/10/2023 4:23 PM, Boris Borisov via Ale wrote:
>>
>> The old fashion way.
>>
>> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
>>
>> echo 1 > /proc/sys/net/ipv4/ip_forward
>>
>>  instead eth0 there is the name of your wifi device
>>
>> .<bugyatl at gmail.com> wrote:
>>
>>> When you say proxy server do you mean you running proxy software on it
>>> or you just using it as getaway?
>>>
>>> On Sat, Jun 10, 2023, 20:56 Don Thrash via Ale <ale at ale.org> wrote:
>>>
>>>> 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
>>>>
>>>>
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>>>
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>
>
> --
> Terror PUP a.k.a
> Chuck "PUP" Payne
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