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SSL-BUMP 5.0.4 not working as expected

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I am trying to configure 5.0.4 with sslbump to bump only a set of domains.

I am unsure about the right way it should be done.

The basic constrains are POLICY vs a set of rules.

  • Should I bump all connections with exceptions?
  • Should I bump non else then the exceptions?
  • Based on server_name regex and/or server_name domains

 

 

Squid Cache: Version 5.0.4-20201125-r5fadc09ee

Service Name: squid

 

This binary uses OpenSSL 1.1.1g FIPS  21 Apr 2020. For legal restrictions on distribution see https://www.openssl.org/source/license.html

 

configure options:  '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--exec_prefix=/usr' '--libexecdir=/usr/lib64/squid' '--localstatedir=/var' '--datadir=/usr/share/squid' '--sysconfdir=/etc/squid' '--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid.pid' '--disable-dependency-tracking' '--enable-follow-x-forwarded-for' '--enable-auth' '--enable-auth-basic=DB,LDAP,NCSA,PAM,POP3,RADIUS,SASL,SMB,getpwnam,fake' '--enable-auth-ntlm=fake' '--enable-auth-digest=file,LDAP,eDirectory' '--enable-auth-negotiate=kerberos,wrapper' '--enable-external-acl-helpers=wbinfo_group,kerberos_ldap_group,LDAP_group,delayer,file_userip,SQL_session,unix_group,session,time_quota' '--enable-cache-digests' '--enable-cachemgr-hostname=localhost' '--enable-delay-pools' '--enable-epoll' '--enable-icap-client' '--enable-ident-lookups' '--enable-linux-netfilter' '--enable-removal-policies=heap,lru' '--enable-snmp' '--enable-storeio=aufs,diskd,ufs,rock' '--enable-wccpv2' '--enable-esi' '--enable-security-cert-generators' '--enable-security-cert-validators' '--enable-icmp' '--with-aio' '--with-default-user=squid' '--with-filedescriptors=16384' '--with-dl' '--with-openssl' '--enable-ssl-crtd' '--with-pthreads' '--with-included-ltdl' '--disable-arch-native' '--without-nettle' 'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu' 'CC=gcc' 'CFLAGS=-O2  -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' 'LDFLAGS=-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' 'CXX=g++' 'CXXFLAGS=-O2  -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -fPIC' 'PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig' 'LT_SYS_LIBRARY_PATH=/usr/lib64:' --enable-ltdl-convenience

 

 

I have tried the next set of rules:

## START

acl step1 at_step SslBump1

acl step2 at_step SslBump2

acl step3 at_step SslBump3

 

acl NoBump_server_regex ssl::server_name_regex -i /etc/squid/server-regex.nobump

acl NoBump_server_name ssl::server_name /etc/squid/server-name.nobump

 

acl NoBump_ALL_regex ssl::server_name_regex -i /etc/squid/all_server-regex.nobump

 

acl MustBump_server_regex ssl::server_name_regex -i /etc/squid/must_server-regex.bump

acl MustBump_server_name ssl::server_name /etc/squid/must_server-name.bump

 

 

ssl_bump peek step1

 

ssl_bump splice NoBump_server_regex

ssl_bump splice NoBump_server_name

 

ssl_bump bump MustBump_server_regex

ssl_bump bump MustBump_server_name

 

ssl_bump splice NoBump_ALL_regex

 

ssl_bump bump all

##END

 

 

 

But the BoBump are not applied.

I tried to understand why squid is bumping despite the explicit splice action.

 

Thanks,

Eliezer

 

----

Eliezer Croitoru

Tech Support

Mobile: +972-5-28704261

Email: ngtech1ltd@xxxxxxxxx

Zoom: Coming soon

 

 

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