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- From: wietse@wzv.win.tue.nl (Wietse Venema)
- Newsgroups: comp.unix.admin,comp.sys.sun.admin,comp.security.misc,alt.security
- Subject: log_tcp (tcp wrapper) update
- Message-ID: <4047@svin09.info.win.tue.nl>
- Date: 1 Sep 92 12:45:28 GMT
- Organization: Eindhoven University of Technology, The Netherlands
-
- This is an announcement of an interim patch for some rough edges that
- were left in last June's release. The patch does not introduce any new
- features or changes to installation and/or configuration procedures.
-
- The patch has been submitted to comp.sources.misc, and can be picked up
- >From ftp-win.tue.nl:/pub/security/log_tcp_4.2-to-4.3.Z.
-
- A fully-patched source kit can be found on ftp.win.tue.nl in the file
- /pub/security/log_tcp.shar.Z. The archives on cert.org (in directory
- /pub/tools/wrappers) and on ftp.uu.net (in /pub/security) will be
- updated ASAP.
-
- The remainder of this message is an extract of the BLURB file (summary
- of fixes and workarounds).
-
- - Some sites reported that connections would be rejected because
- localhost != localhost.domain. The host name checking code now
- special-cases localhost (problem reported by several sites).
-
- - The programs now report an error if an existing access control
- file cannot be opened (e.g. due to lack of privileges). Until now,
- the programs would just pretend that the access control file does
- not exist (reported by Darren Reed, avalon@coombs.anu.edu.au).
-
- - The timeout period for remote userid lookups was upped to 30
- seconds, in order to cope with slow hosts or networks. If this is
- too long for you, adjust the TIMEOUT definition in file rfc931.c
- (problem reported by several sites).
-
- - On hosts with more than one IP network interface, remote userid
- lookups could use the IP address of the "wrong" local interface.
- The problem and its solution were discussed on the rfc931-users
- mailing list. Scott Schwartz (schwartz@cs.psu.edu) folded the fix
- into the rfc931.c module.
-
- - The result of % expansion (in shell commands) is now checked for
- stuff that may confuse the shell; it is replaced by underscores
- (problem reported by Icarus Sparry, I.Sparry@gdr.bath.ac.uk).
-
- - A portability problem was fixed that caused compile-time problems
- on a CRAY (problem reported by Michael Barnett, mikeb@rmit.edu.au).
-
- Finally, a caveat for those who use the optional remote username lookup
- feature (RFC 931 protocol). On some systems, these lookups may trigger
- a kernel bug. When a client host connects to your system, and the RFC
- 931 connection to that client is rejected by a router, some kernels
- drop all connections with that client. The bug is not in the log_tcp
- programs. The patched README file describes how to find out if your
- kernel has the bug, and what action can be taken.
-
- Wietse Venema (wietse@wzv.win.tue.nl),
- Department of Mathematics and Computing Science,
- Eindhoven University of Technology,
- The Netherlands.
-
-