On 2024-04-10 10:50, Jonathan Lee wrote:

I am getting the following error in 6.6 after a upgrade from 5.8 does anyone 
know what this is caused by?

SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR

    $ openssl errstr A000417
    error:0A000417:SSL routines::sslv3 alert illegal parameter

I think I have seen that error code before, but I do not recall the exact circumstances. Sorry! The error happens when Squid tries to accept (or peek at) a TLS connection from the client. Might be prohibited TLS version/feature, TLS greasing, or non-TLS traffic? Try examining client TLS Hello packet(s) in Wireshark.

Alex.

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