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A new problem popped up in the last couple of days in an otherwise working environment. Active Directory running on 2008r2 Windows 10 client Squid 3.5.12 # squid -v Squid Cache: Version 3.5.12 Service Name: squid Ubuntu linux configure options: '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--libexecdir=${prefix}/lib/squid3'
'--srcdir=.' '--disable-maintainer-mode' '--disable-dependency-tracking' '--disable-silent-rules' 'BUILDCXXFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now' '--datadir=/usr/share/squid'
'--sysconfdir=/etc/squid' '--libexecdir=/usr/lib/squid' '--mandir=/usr/share/man' '--enable-inline' '--disable-arch-native' '--enable-async-io=8' '--enable-storeio=ufs,aufs,diskd,rock' '--enable-removal-policies=lru,heap' '--enable-delay-pools' '--enable-cache-digests'
'--enable-icap-client' '--enable-follow-x-forwarded-for' '--enable-auth-basic=DB,fake,getpwnam,LDAP,NCSA,NIS,PAM,POP3,RADIUS,SASL,SMB' '--enable-auth-digest=file,LDAP' '--enable-auth-negotiate=kerberos,wrapper' '--enable-auth-ntlm=fake,smb_lm' '--enable-external-acl-helpers=file_userip,kerberos_ldap_group,LDAP_group,session,SQL_session,unix_group,wbinfo_group'
'--enable-url-rewrite-helpers=fake' '--enable-eui' '--enable-esi' '--enable-icmp' '--enable-zph-qos' '--enable-ecap' '--disable-translation' '--with-swapdir=/var/spool/squid' '--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid.pid' '--with-filedescriptors=65536'
'--with-large-files' '--with-default-user=proxy' '--enable-build-info=Ubuntu linux' '--enable-linux-netfilter' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions
-fPIE -pie -Wl,-z,relro -Wl,-z,now' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security' I have a working krb5.conf and keytab file and running wbinfo (for example to test) works fine. A given workstation, using IE, Firefox, Chrome (really anything) is not able to use Kerberos for authentication. I believe a sample error reported in cache.log : negotiate_kerberos_auth.cc(610): pid=3033 :2018/02/22 13:23:46| negotiate_kerberos_auth: DEBUG: Got 'YR removed' from squid (length: 219). negotiate_kerberos_auth.cc(663): pid=3033 :2018/02/22 13:23:46| negotiate_kerberos_auth: DEBUG: Decode 'removed' (decoded length: 161). negotiate_kerberos_auth.cc(180): pid=3033 :2018/02/22 13:23:46| negotiate_kerberos_auth: ERROR: gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error It would be helpful if the error included the client IP, so I’m going on best guess. I’m not sure what additional information to provide. Any one with some thoughts on whats not working? Joey |
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