Hello, I want to start saying I'm new working with squid so bear with me. We are at my company trying to use squid as egress solution for our servers running in AWS. We need to have a whitelisting function in place.
HTTP works fine but not HTTPS. When trying to run curl from another server using squid to access internet we receive this message: #curl https://microsoft.com curl: (60) SSL certificate problem: self signed certificate in certificate chain More details here: https://curl.haxx.se/docs/sslcerts.html curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above. When checking the squid cache log file this is showing: # tail -f /var/log/squid/cache.log 2019/11/20 08:25:01 kid1| HTCP Disabled. 2019/11/20 08:25:01 kid1| Squid plugin modules loaded: 0 2019/11/20 08:25:01 kid1| Adaptation support is off. 2019/11/20 08:25:01 kid1| Accepting HTTP Socket connections at local=[::]:3128 remote=[::] FD 23 flags=9 2019/11/20 08:25:01 kid1| Accepting NAT intercepted HTTP Socket connections at local=[::]:3129 remote=[::] FD 24 flags=41 2019/11/20 08:25:01 kid1| Accepting NAT intercepted SSL bumped HTTPS Socket connections at local=[::]:3130 remote=[::] FD 25 flags=41 2019/11/20 08:25:02 kid1| storeLateRelease: released 0 objects security_file_certgen helper database '/var/spool/squid/ssl_db' failed: Failed to open file /var/spool/squid/ssl_db/index.txt 2019/11/20 08:25:10 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) 2019/11/20 08:25:12 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) 2019/11/20 08:25:14 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) 2019/11/20 08:25:19 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) 2019/11/20 08:25:19 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) 2019/11/20 08:25:20 kid1| Error negotiating SSL connection on FD 12: error:00000001:lib(0):func(0):reason(1) (1/0) The squid.conf looks like this: #acl localnet src 10.0.0.0/8 visible_hostname centos-squid-4.1 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT acl allowed_http_sites dstdomain .microsoft.com acl allowed_http_sites dstdomain .google.com acl allowed_http_sites dstdomain .redhat.com http_access allow allowed_http_sites Safe_ports http_port 3128 http_port 3129 intercept #SSL Settings acl allowed_https_sites dstdomain .microsoft.com http_access allow CONNECT allowed_https_sites options=SINGLE_DH_USE,SINGLE_ECDH_USE tls-dh=/etc/squid/dhparam.pem https_port 3130 intercept ssl-bump generate-host-certificates=on cert=/etc/squid/fredrik_cert/squid.pem key=/etc/squid/fredrik_cert/squid.key options=SINGLE_DH_USE,SINGLE_ECDH_USE tls-dh=/etc/squid/dhparam .pem # And finally deny all other access to this proxy http_access deny all http_access deny !Safe_ports http_access deny CONNECT !SSL_ports # Leave coredumps in the first cache dir coredump_dir /var/spool/squid # # Add any of your own refresh_pattern entries above these. # refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 #refresh_pattern . acl step1 at_step SslBump1 acl step2 at_step SslBump2 acl step3 at_step SslBump3 ssl_bump peek step1 all ssl_bump peek step2 allowed_https_sites ssl_bump splice step2 allowed_https_sites ssl_bump splice step3 allowed_https_sites ssl_bump terminate step2 all cache_mem 1024 MB sslcrtd_program /usr/lib64/squid/security_file_certgen -s /var/spool/squid/ssl_db -M 16MB sslcrtd_children 10 ssl_bump bump all Please assist me! Nick
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