Hi,
Thank you Amos Jeffries and Antony Stone. It seems the configuration I have provides the functionality of filtering I am looking for.
There is a strange behavior I can see when accessing some legitimate sites which I see traces of in cache.log :
2021/01/02 10:55:48 kid1| helperOpenServers: Starting 1/20 'squidGuard' processes
2021/01/02 10:57:31 kid1| ERROR: negotiating TLS on FD 39: error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (1/-1/0)
2021/01/02 10:57:31 kid1| Error negotiating SSL connection on FD 38: error:00000001:lib(0):func(0):reason(1) (1/-1)
2021/01/02 10:57:32 kid1| ERROR: negotiating TLS on FD 38: error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (1/-1/0)
2021/01/02 10:57:32 kid1| Error negotiating SSL connection on FD 35: error:00000001:lib(0):func(0):reason(1) (1/-1)
2021/01/02 10:57:40 kid1| Starting new redirector helpers...
2021/01/02 10:57:40 kid1| helperOpenServers: Starting 1/20 'squidGuard' processes
2021/01/02 10:58:09 kid1| ERROR: negotiating TLS on FD 51: error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (1/-1/0)
2021/01/02 10:58:09 kid1| Error negotiating SSL connection on FD 40: error:00000001:lib(0):func(0):reason(1) (1/-1)
2021/01/02 10:58:10 kid1| ERROR: negotiating TLS on FD 51: error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (1/-1/0)
2021/01/02 10:58:10 kid1| Error negotiating SSL connection on FD 40: error:00000001:lib(0):func(0):reason(1) (1/-1)
I noticed other users of squid encountered similar issues but I did not find a clear answer to the issue. Is there a problem with my setup ? I am not sure to be able to solve it on my own ! Any help would be appreciated.
Best regards,
JF Hasson
On Thursday 31 December 2020 at 10:10:11, jean francois hasson wrote:If I set up on a device connected to the access point a proxy manually ie 10.3.141.1 on port 8080, I can access the internet. If I put the following rules for iptables to use in files rules.v4 : *nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 10.3.141.1:3128 -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 -A PREROUTING -i eth0 -p tcp -m tcp --dport 443 -j DNAT --to-destination 10.3.141.1:3129 -A PREROUTING -i eth0 -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 3129 -A POSTROUTING -s 10.3.141.0/24 -o eth0 -j MASQUERADETry removing the DNAT rules above. You should be using REDIRECT for intercept mode to work correctly. Antony.
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