[squid-users] negotiate_kerberos_auth not working anymore

Fri Aug 30 12:35:05 UTC 2024

Hello all,

I have a little problem with this helper, it worked fine for a while and then suddely stopped working.

I can call a kerberos ticket when using kinit

root at sv-asa-proxy:/var/log/squid# kinit -kt /etc/squid/sv-asa-proxy.keytab HTTP/sv-asa-proxy at ASA.LOCAL
root at sv-asa-proxy:/var/log/squid# klist
Ticket cache: FILE:/tmp/krb5cc_0
Default principal: HTTP/sv-asa-proxy at ASA.LOCAL

Valid starting     Expires            Service principal
08/30/24 14:24:27  08/31/24 00:24:27  krbtgt/ASA.LOCAL at ASA.LOCAL
        renew until 08/31/24 14:24:27
root at sv-asa-proxy:/var/log/squid#

so - this works well

this is a part of my squid.conf:

auth_param negotiate program /usr/lib/squid/negotiate_kerberos_auth -k /etc/squid/sv-asa-proxy.keytab -s HTTP/sv-asa-proxy at ASA.LOCAL<mailto:HTTP/sv-asa-proxy at ASA.LOCAL>  -r -d
auth_parauth_param negotiate children 100 startup=0 idle=10
auth_param negotiate keep_alive on
acl kerb-auth proxy_auth REQUIRED

i also tried

auth_param negotiate program /usr/lib/squid/negotiate_kerberos_auth -k /etc/squid/sv-asa-proxy.keytab -s HTTP/sv-asa-proxy at ASA.LOCAL  -s GSS_C_NO_NAME -r -d

no success...

when i try

root at sv-asa-proxy:/var/log/squid# /usr/lib/squid/negotiate_kerberos_auth_test -k /etc/squid/sv-asa-proxy.keytab -s HTTP/sv-asa-proxy.asa.local at ASA.LOCAL -s GSS_C_NO_NAME -d -i
2024/08/30 14:28:35| negotiate_kerberos_auth_test: gss_init_sec_context() failed: Unspecified GSS failure.  Minor code may provide more information. Server not found in Kerberos database
Token: NULL
root at sv-asa-proxy:/var/log/squid#

and when i try this one:

root at sv-asa-proxy:/var/log/squid# /usr/lib/squid/negotiate_kerberos_auth -k /etc/squid/sv-asa-proxy.keytab -s HTTP/sv-asa-proxy.asa.local at ASA.LOCAL<mailto:HTTP/sv-asa-proxy.asa.local at ASA.LOCAL> -d -r
negotiate_kerberos_auth.cc(489): pid=5286 :2024/08/30 14:29:25| negotiate_kerberos_auth: INFO: Starting version 3.1.0sq
negotiate_kerberos_auth.cc(548): pid=5286 :2024/08/30 14:29:25| negotiate_kerberos_auth: INFO: Setting keytab to /etc/squid/sv-asa-proxy.keytab
negotiate_kerberos_auth.cc(571): pid=5286 :2024/08/30 14:29:25| negotiate_kerberos_auth: INFO: Changed keytab to MEMORY:negotiate_kerberos_auth_5286
admin at ASA.LOCAL<mailto:admin at ASA.LOCAL>
negotiate_kerberos_auth.cc(612): pid=5286 :2024/08/30 14:30:06| negotiate_kerberos_auth: DEBUG: Got 'admin at ASA.LOCAL' from squid (length: 15).
negotiate_kerberos_auth.cc(661): pid=5286 :2024/08/30 14:30:06| negotiate_kerberos_auth: ERROR: Invalid request [admin at ASA.LOCAL]
BH Invalid request

And the log:

2024/08/30 14:31:25 kid1| Set Current Directory to /var/spool/squid
2024/08/30 14:31:25 kid1| Starting Squid Cache version 5.9 for x86_64-pc-linux-gnu...
2024/08/30 14:31:25 kid1| Service Name: squid
2024/08/30 14:31:25 kid1| Process ID 5309
2024/08/30 14:31:25 kid1| Process Roles: worker
2024/08/30 14:31:25 kid1| With 1024 file descriptors available
2024/08/30 14:31:25 kid1| Initializing IP Cache...
2024/08/30 14:31:25 kid1| DNS Socket created at [::], FD 9
2024/08/30 14:31:25 kid1| DNS Socket created at 0.0.0.0, FD 10
2024/08/30 14:31:25 kid1| Adding nameserver 192.168.40.1 from squid.conf
2024/08/30 14:31:25 kid1| Adding nameserver 192.168.40.2 from squid.conf
2024/08/30 14:31:25 kid1| helperOpenServers: Starting 0/100 'negotiate_kerberos_auth' processes
2024/08/30 14:31:25 kid1| helperStatefulOpenServers: No 'negotiate_kerberos_auth' processes needed.
2024/08/30 14:31:25 kid1| helperOpenServers: Starting 0/25 'ext_kerberos_ldap_group_acl' processes
2024/08/30 14:31:25 kid1| helperOpenServers: No 'ext_kerberos_ldap_group_acl' processes needed.
2024/08/30 14:31:25 kid1| Logfile: opening log daemon:/var/log/squid/access.log
2024/08/30 14:31:25 kid1| Logfile Daemon: opening log /var/log/squid/access.log
2024/08/30 14:31:26 kid1| Unlinkd pipe opened on FD 16
2024/08/30 14:31:26 kid1| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec
2024/08/30 14:31:26 kid1| Logfile: opening log daemon:/var/log/squid/store.log
2024/08/30 14:31:26 kid1| Logfile Daemon: opening log /var/log/squid/store.log
2024/08/30 14:31:26 kid1| Swap maxSize 20480000 + 2097152 KB, estimated 1736704 objects
2024/08/30 14:31:26 kid1| Target number of buckets: 86835
2024/08/30 14:31:26 kid1| Using 131072 Store buckets
2024/08/30 14:31:26 kid1| Max Mem  size: 2097152 KB
2024/08/30 14:31:26 kid1| Max Swap size: 20480000 KB
2024/08/30 14:31:26 kid1| Rebuilding storage in /var/cache/squid (clean log)
2024/08/30 14:31:26 kid1| Using Least Load store dir selection
2024/08/30 14:31:26 kid1| Set Current Directory to /var/spool/squid
2024/08/30 14:31:26 kid1| Finished loading MIME types and icons.
2024/08/30 14:31:26 kid1| HTCP Disabled.
2024/08/30 14:31:26 kid1| Pinger socket opened on FD 23
2024/08/30 14:31:26 kid1| Squid plugin modules loaded: 0
2024/08/30 14:31:26 kid1| Adaptation support is off.
2024/08/30 14:31:26 kid1| Accepting HTTP Socket connections at conn3 local=[::]:8080 remote=[::] FD 21 flags=9
2024/08/30 14:31:26 kid1| Done reading /var/cache/squid swaplog (50 entries)
2024/08/30 14:31:26 kid1| Finished rebuilding storage from disk.
2024/08/30 14:31:26 kid1|        50 Entries scanned
2024/08/30 14:31:26 kid1|         0 Invalid entries.
2024/08/30 14:31:26 kid1|         0 With invalid flags.
2024/08/30 14:31:26 kid1|        50 Objects loaded.
2024/08/30 14:31:26 kid1|         0 Objects expired.
2024/08/30 14:31:26 kid1|         0 Objects cancelled.
2024/08/30 14:31:26 kid1|         0 Duplicate URLs purged.
2024/08/30 14:31:26 kid1|         0 Swapfile clashes avoided.
2024/08/30 14:31:26 kid1|   Took 0.01 seconds (5303.35 objects/sec).
2024/08/30 14:31:26 kid1| Beginning Validation Procedure
2024/08/30 14:31:26 kid1|   Completed Validation Procedure
2024/08/30 14:31:26 kid1|   Validated 50 Entries
2024/08/30 14:31:26 kid1|   store_swap_size = 732.00 KB
2024/08/30 14:31:26| pinger: Initialising ICMP pinger ...
2024/08/30 14:31:26| pinger: ICMP socket opened.
2024/08/30 14:31:26| pinger: ICMPv6 socket opened
2024/08/30 14:31:27 kid1| storeLateRelease: released 0 objects

Do you have any suggstions for me?

Kind regards

Michael

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