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Code Issues Projects Releases Wiki Activity

security/logcheck: Update patterns for ssh

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According to release notes of OpenSSH, following incompatible change
is made with 9.8/9.8p1.

* sshd(8): several log messages have changed. In particular, some
  log messages will be tagged with as originating from a process
  named "sshd-session" rather than "sshd".

So update patterns for ssh so they match with log message from latest
version of OpenSSH

Reference:	https://www.openssh.com/releasenotes.html
This commit is contained in:
Yasuhiro Kimura
2025-08-16 15:57:18 +09:00
parent 0095ba50ca
commit 88800de750
3 changed files with 158 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
security/logcheck/Makefile
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@@ -1,5 +1,6 @@
PORTNAME= logcheck
DISTVERSION= 1.4.6
PORTREVISION= 1
CATEGORIES= security
MASTER_SITES= DEBIAN_POOL
DISTNAME= ${PORTNAME}_${PORTVERSION}
security/logcheck/files/patch-rulefiles_linux_ignore.d.paranoid_ssh
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@@ -0,0 +1,10 @@
--- rulefiles/linux/ignore.d.paranoid/ssh.orig 2025-08-06 20:24:39 UTC
+++ rulefiles/linux/ignore.d.paranoid/ssh
@@ -1,5 +1,5 @@
# https://sources.debian.org/src/pam/1.5.3-7/modules/pam_unix/pam_unix_sess.c/#L100
-^(\w{3} [ :0-9]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session opened for user [^[:space:]]+\(uid=[0-9]+\) by \(uid=[0-9]+\)$
+^(\w{3} [ :0-9]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session opened for user [^[:space:]]+\(uid=[0-9]+\) by \(uid=[0-9]+\)$
# https://sources.debian.org/src/pam/1.5.3-7/modules/pam_unix/pam_unix_sess.c/#L130
-^(\w{3} [ :0-9]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session closed for user [^[:space:]]+$
+^(\w{3} [ :0-9]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session closed for user [^[:space:]]+$
security/logcheck/files/patch-rulefiles_linux_ignore.d.server_ssh
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@@ -0,0 +1,147 @@
--- rulefiles/linux/ignore.d.server/ssh.orig 2025-08-06 20:24:39 UTC
+++ rulefiles/linux/ignore.d.server/ssh
@@ -2,108 +2,108 @@
# gssapi-keyex is added by https://salsa.debian.org/ssh-team/openssh/-/blob/master/debian/patches/gssapi.patch -- this may be moved to a different package in future!
# sshd_config(5) lists: gssapi-with-mic,hostbased, keyboard-interactive, none, password, publickey
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Accepted (gssapi(-with-mic|-keyex)?|password|publickey|keyboard-interactive/pam|hostbased) for [^[:space:]]+ from [.:[:xdigit:]]+ port [[:digit:]]+ ssh2(: (RSA|ECDSA|ED25519) (SHA256:[0-9a-zA-Z+/=]{43}|(MD5:)?([[:xdigit:]]{2}:){15}[[:xdigit:]]{2}))?$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Accepted (gssapi(-with-mic|-keyex)?|password|publickey|keyboard-interactive/pam|hostbased) for [^[:space:]]+ from [.:[:xdigit:]]+ port [[:digit:]]+ ssh2(: (RSA|ECDSA|ED25519) (SHA256:[0-9a-zA-Z+/=]{43}|(MD5:)?([[:xdigit:]]{2}:){15}[[:xdigit:]]{2}))?$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/gss-serv-krb5.c#L103
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Authorized to [^[:space:]]+, krb5 principal [^[:space:]]+ \(krb5_kuserok\)$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Authorized to [^[:space:]]+, krb5 principal [^[:space:]]+ \(krb5_kuserok\)$
# possibly https://salsa.debian.org/ssh-team/openssh/-/blob/master/packet.c#L1985 and #L1508
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Disconnecting: Bad packet length [[:digit:]]+\.$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Disconnecting: Bad packet length [[:digit:]]+\.$
# # possibly https://salsa.debian.org/ssh-team/openssh/-/blob/master/packet.c#L1586 (via #L1985)
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Disconnecting: Corrupted MAC on input\.$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Disconnecting: Corrupted MAC on input\.$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/packet.c#L1735
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Received disconnect from [.:[:xdigit:]]+ port [[:digit:]]+:[[:digit:]]+: .+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Received disconnect from [.:[:xdigit:]]+ port [[:digit:]]+:[[:digit:]]+: .+$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/packet.c#1912
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Disconnected from ((invalid|authenticating) )?(user [^[:space:]]+ )?[.:[:xdigit:]]+ port [[:digit:]]+( \[preauth\])?$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Disconnected from ((invalid|authenticating) )?(user [^[:space:]]+ )?[.:[:xdigit:]]+ port [[:digit:]]+( \[preauth\])?$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/packet.c#1905 and 1906
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Connection (closed|reset) by ((invalid|authenticating) )?(user [^[:space:]]+ )?[.:[:xdigit:]]+ port [[:digit:]]+( \[preauth\])?$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Connection (closed|reset) by ((invalid|authenticating) )?(user [^[:space:]]+ )?[.:[:xdigit:]]+ port [[:digit:]]+( \[preauth\])?$
^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Server listening on [.:[:xdigit:]]+ port [[:digit:]]+\.$
## packet.c#1927 (logdie("Unable to negotiate with %s: %s. "...))
# offer is something like diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 or ecdsa-sha2-nistp256-cert-v01@openssh.com
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Unable to negotiate with [.:[:xdigit:]]+ port [[:digit:]]+: no matching (key exchange|host key) method found\. Their offer: [[:alnum:]@.,-]+ \[preauth\]$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Unable to negotiate with [.:[:xdigit:]]+ port [[:digit:]]+: no matching (key exchange|host key) method found\. Their offer: [[:alnum:]@.,-]+ \[preauth\]$
# packet.c#L133 (message is at ssherr.c#L87)
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: ssh_dispatch_run_fatal: Connection from user [^[:space:]]+ [.:[:xdigit:]]+ port [[:digit:]]+: message authentication code incorrect$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: ssh_dispatch_run_fatal: Connection from user [^[:space:]]+ [.:[:xdigit:]]+ port [[:digit:]]+: message authentication code incorrect$
# possibly https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L344 (via packet.c#L1985)
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Disconnecting: Too many authentication failures for [^[:space:]]* \[preauth\]$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Disconnecting: Too many authentication failures for [^[:space:]]* \[preauth\]$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L290-297
# 'invalid user' and UNKNOWN can be returned by ssh_remote_ipaddr() - see packet.c
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Failed (keyboard-interactive/pam|password|none) for (invalid user )?[^[:space:]]+ from ([.:[:xdigit:]]+|UNKNOWN) port [[:digit:]]+ ssh2$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Failed (keyboard-interactive/pam|password|none) for (invalid user )?[^[:space:]]+ from ([.:[:xdigit:]]+|UNKNOWN) port [[:digit:]]+ ssh2$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L494
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Invalid user [^[:space:]]+ from ([.:[:xdigit:]]+|UNKNOWN) port [[:digit:]]+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Invalid user [^[:space:]]+ from ([.:[:xdigit:]]+|UNKNOWN) port [[:digit:]]+$
# auth.c #L286
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Postponed keyboard-interactive(/pam)? for (invalid user )?[^[:space:]]+ from [.:[:xdigit:]]+ port [[:digit:]]+ ssh2( \[preauth\])?$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Postponed keyboard-interactive(/pam)? for (invalid user )?[^[:space:]]+ from [.:[:xdigit:]]+ port [[:digit:]]+ ssh2( \[preauth\])?$
# not found in code?
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: input_userauth_request: invalid user [^[:space:]]+ \[preauth\]$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: input_userauth_request: invalid user [^[:space:]]+ \[preauth\]$
# https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L157-158 and #L185-186
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because (listed in Deny|not listed in Allow)Users$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because (listed in Deny|not listed in Allow)Users$
#https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L208-209
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because none of user's groups are listed in AllowGroups$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because none of user's groups are listed in AllowGroups$
#' https://salsa.debian.org/ssh-team/openssh/-/blob/master/auth.c#L195-196
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because a group is listed in DenyGroups$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: User [^[:space:]]+ from [-_.[:alnum:]]+ not allowed because a group is listed in DenyGroups$
# not found - auth_pam.c#L397 is close (but wont match without a ":" after "PAM")
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: PAM pam_putenv: delete non-existent entry; [[:alnum:]]+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: PAM pam_putenv: delete non-existent entry; [[:alnum:]]+$
# canohost.c#L85
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: Nasty PTR record "[.:[:xdigit:]]+" is set up for [.:[:xdigit:]]+, ignoring$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: Nasty PTR record "[.:[:xdigit:]]+" is set up for [.:[:xdigit:]]+, ignoring$
# possibly from auth-shadow.c#L96? think you would want to know if this was happening
-#^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: Could not get shadow information for NOUSER$
+#^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: Could not get shadow information for NOUSER$
# sshd.c#L380
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: fatal: Timeout before authentication for [.:[:xdigit:]]+ port [[:digit:]]+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: fatal: Timeout before authentication for [.:[:xdigit:]]+ port [[:digit:]]+$
# sshd.c#L977
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: fatal: recv_rexec_state: ssh_msg_recv failed$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: fatal: recv_rexec_state: ssh_msg_recv failed$
# eg from auth2-pubkey.c#L291
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: fatal: userauth_pubkey: send packet: Connection reset by peer \[preauth\]$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: fatal: userauth_pubkey: send packet: Connection reset by peer \[preauth\]$
# kex.c#1630 (verbose_f("Connection closed by remote host"))
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: kex_exchange_identification: Connection closed by remote host$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: kex_exchange_identification: Connection closed by remote host$
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: kex_exchange_identification: read: Connection reset by peer$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: kex_exchange_identification: read: Connection reset by peer$
# kex.c#L1672 (verbose_f("client sent invalid protocol identifier "...))
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: kex_exchange_identification: client sent invalid protocol identifier ".+"$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: kex_exchange_identification: client sent invalid protocol identifier ".+"$
# sshconnect.c#L1585 (sshpkt_fatal(ssh, r, "banner exchange"))
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: banner exchange: Connection from [.:[:xdigit:]]+ port [[:digit:]]+: invalid format$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: banner exchange: Connection from [.:[:xdigit:]]+ port [[:digit:]]+: invalid format$
# kex.c#L1646-1647
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: kex_exchange_identification: banner line contains invalid characters$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: kex_exchange_identification: banner line contains invalid characters$
# kex.c#L1720
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: error: Protocol major versions differ: 2 vs\. 1$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: error: Protocol major versions differ: 2 vs\. 1$
# ssherr.c#L101 (SSH_ERR_NO_PROTOCOL_VERSION)
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: banner exchange: Connection from [.:[:xdigit:]]+ port [[:digit:]]+: could not read protocol version$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: banner exchange: Connection from [.:[:xdigit:]]+ port [[:digit:]]+: could not read protocol version$
# subsystem.c#L1964
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: subsystem request for sftp by user [^[:space:]]+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: subsystem request for sftp by user [^[:space:]]+$
# loginrec.c#L1439 --- you would want this message reported?
-#^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: syslogin_perform_logout: logout\(\) returned an error$
+#^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: syslogin_perform_logout: logout\(\) returned an error$
# not sure where this is from
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: refused connect from [:[:alnum:]._-]+ \([:[:alnum:].]+\)$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: refused connect from [:[:alnum:]._-]+ \([:[:alnum:].]+\)$
# unclear if this is still generated
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: nss_ldap: reconnect(ing|ed) to LDAP server(\.\.\.| after [[:digit:]]+ attempt\(s\))$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: nss_ldap: reconnect(ing|ed) to LDAP server(\.\.\.| after [[:digit:]]+ attempt\(s\))$
# tcp wrappers - not sure what generates these, or if they are up-to-date
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: warning: /etc/hosts\.(allow|deny), line [[:digit:]]+: can't verify hostname: getaddrinfo\([._[:alnum:]-]+, AF_INET\) failed$
-^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd\[[[:digit:]]+\]: warning: /etc/hosts\.(allow|deny), line [[:digit:]]+: host name/(name|address) mismatch: [._[:alnum:]-]+ != [._[:alnum:]-]+$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: warning: /etc/hosts\.(allow|deny), line [[:digit:]]+: can't verify hostname: getaddrinfo\([._[:alnum:]-]+, AF_INET\) failed$
+^(\w{3} [ :[:digit:]]{11}|[0-9T:.+-]{32}) [._[:alnum:]-]+ sshd(-session)?\[[[:digit:]]+\]: warning: /etc/hosts\.(allow|deny), line [[:digit:]]+: host name/(name|address) mismatch: [._[:alnum:]-]+ != [._[:alnum:]-]+$