SEO

Hi,
I was on AIX 5.3 and just applied ML3. It seems services in inetd.conf
have stopped working. inetd itself is running and can be refreshed OK.

However telnet, ftp etc have stopped working (they are commented in in
inetd.conf).

If I try to telnet to the server I get

>tn serverA
Trying...
telnet: connect: A remote host refused an attempted connect operation.

If I run 'netstat -a' I cant see telnet or ftp listening, eg 'netstat
-a |grep telnet' returns nothing whereas on a good system it shows

>netstat -a|grep telnet
tcp 0 0 *.telnet *.*
LISTEN

I have checked things such as filepermissions, and inetd.conf looks OK.

Do you have any suggestions.

Regards,
Scott

scott_doyland@johnlewis.co.uk wrote:
sdjcu> Hi,
sdjcu> I was on AIX 5.3 and just applied ML3. It seems services in inetd.conf
sdjcu> have stopped working. inetd itself is running and can be refreshed OK.
sdjcu>
sdjcu> However telnet, ftp etc have stopped working (they are commented in in
sdjcu> inetd.conf).
sdjcu>
sdjcu> If I try to telnet to the server I get
sdjcu>
>>tn serverA
sdjcu> Trying...
sdjcu> telnet: connect: A remote host refused an attempted connect operation.
sdjcu>
sdjcu> If I run 'netstat -a' I cant see telnet or ftp listening, eg 'netstat
sdjcu> -a |grep telnet' returns nothing whereas on a good system it shows
sdjcu>
>>netstat -a|grep telnet
sdjcu> tcp 0 0 *.telnet *.*
sdjcu> LISTEN
sdjcu>
sdjcu> I have checked things such as filepermissions, and inetd.conf looks OK.
sdjcu>
sdjcu> Do you have any suggestions.
sdjcu>
sdjcu> Regards,
sdjcu> Scott
sdjcu>

Have you tried starting those servers, e.g., # startsrc -t 'telnet'
The error you get might shed some light... Any error log entries?
Are the services defined in /etc/services?

-Bela (5300-04-01)
--
"... I shook my family tree, and a bunch of NUTS fell out ..."

Bela wrote:
> scott_doyland@johnlewis.co.uk wrote:
> sdjcu> Hi,
> sdjcu> I was on AIX 5.3 and just applied ML3. It seems services in inetd.conf
> sdjcu> have stopped working. inetd itself is running and can be refreshed OK.
> sdjcu>
> sdjcu> However telnet, ftp etc have stopped working (they are commented in in
> sdjcu> inetd.conf).
> sdjcu>
> sdjcu> If I try to telnet to the server I get
> sdjcu>
> >>tn serverA
> sdjcu> Trying...
> sdjcu> telnet: connect: A remote host refused an attempted connect operation.
> sdjcu>
> sdjcu> If I run 'netstat -a' I cant see telnet or ftp listening, eg 'netstat
> sdjcu> -a |grep telnet' returns nothing whereas on a good system it shows
> sdjcu>
> >>netstat -a|grep telnet
> sdjcu> tcp 0 0 *.telnet *.*
> sdjcu> LISTEN
> sdjcu>
> sdjcu> I have checked things such as filepermissions, and inetd.conf looks OK.
> sdjcu>
> sdjcu> Do you have any suggestions.
> sdjcu>
> sdjcu> Regards,
> sdjcu> Scott
> sdjcu>
>
> Have you tried starting those servers, e.g., # startsrc -t 'telnet'
> The error you get might shed some light... Any error log entries?
> Are the services defined in /etc/services?
>
> -Bela (5300-04-01)
> --
> "... I shook my family tree, and a bunch of NUTS fell out ..."


I have turned on debug mode for inetd and get this in /tmp/syslog.out

ar 31 11:16:09 mcsjl40b syslog:info syslogd: restart
Mar 31 11:16:25 mcsjl40b daemon:debug inetd[356414]: ADD : ftp
proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/ftpd
Mar 31 11:16:25 mcsjl40b daemon:err|error inetd[356414]: ftp/tcp: bind:
Addr family not supported by protocol
Mar 31 11:16:25 mcsjl40b daemon:debug inetd[356414]: ADD : telnet
proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/telnetd
Mar 31 11:16:26 mcsjl40b daemon:err|error inetd[356414]: telnet/tcp:
bind: Addr family not supported by protocol
Mar 31 11:16:26 mcsjl40b daemon:debug inetd[356414]: ADD : shell
proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/rshd
Mar 31 11:16:26 mcsjl40b daemon:err|error inetd[356414]: shell/tcp:
bind: Addr family not supported by protocol
Mar 31 11:16:26 mcsjl40b daemon:debug inetd[356414]: ADD : login
proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/rlogind
Mar 31 11:16:26 mcsjl40b daemon:err|error inetd[356414]: login/tcp:
bind: Addr family not supported by protocol
Mar 31 11:16:26 mcsjl40b daemon:debug inetd[356414]: ADD : exec
proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/rexecd
Mar 31 11:16:26 mcsjl40b daemon:err|error inetd[356414]: exec/tcp:
bind: Addr family not supported by protocol
Mar 31 11:16:26 mcsjl40b daemon:debug inetd[356414]: ADD : bootps
proto=udp, wait=1(src=0), user=root builtin=0 server=/usr/sbin/bootpd
Mar 31 11:16:26 mcsjl40b daemon:debug inetd[356414]: ADD : tftp
proto=udp, wait=0(src=1), user=nobody builtin=0 server=/usr/sbin/tftpd
Mar 31 11:16:30 mcsjl40b daemon:err|error tftpd[348160]: [00000001]
EZZ7025E Retrieval failed for the message: TFTP_MSG_C_25: {1,25} bind
failed: Addr family not supported by protocol
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : ntalk
proto=udp, wait=1(src=0), user=root builtin=0 server=/usr/sbin/talkd
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: ntalk/udp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : daytime
proto=tcp, wait=0(src=0), user=root builtin=20001190 server=internal
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: daytime/tcp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : time
proto=tcp, wait=0(src=0), user=root builtin=20001170 server=internal
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: time/tcp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : daytime
proto=udp, wait=0(src=0), user=root builtin=200011a0 server=internal
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: daytime/udp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : time
proto=udp, wait=0(src=0), user=root builtin=20001180 server=internal
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: time/udp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : wsmserver
proto=tcp, wait=0(src=0), user=root builtin=0
server=/usr/websm/bin/wsmserver
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: wsmserver/tcp:
bind: Address already in use
Mar 31 11:16:30 mcsjl40b daemon:debug inetd[356414]: ADD : strexec
proto=tcp, wait=0(src=0), user=root builtin=0
server=/usr/lpp/storix/bin/strexecd
Mar 31 11:16:30 mcsjl40b daemon:err|error inetd[356414]: strexec/tcp:
bind: Address already in use


Any ideas on what it means.

Regards,
Scott

scott_doyland@johnlewis.co.uk wrote:
sdjcu>
sdjcu> Bela wrote:
>> scott_doyland@johnlewis.co.uk wrote:
>> sdjcu> Hi,
>> sdjcu> I was on AIX 5.3 and just applied ML3. It seems services in inetd.conf
>> sdjcu> have stopped working. inetd itself is running and can be refreshed OK.
>> sdjcu>
>> sdjcu> However telnet, ftp etc have stopped working (they are commented in in
>> sdjcu> inetd.conf).
>> sdjcu>
>> sdjcu> If I try to telnet to the server I get
>> sdjcu>
>> >>tn serverA
>> sdjcu> Trying...
>> sdjcu> telnet: connect: A remote host refused an attempted connect operation.
>> sdjcu>
>> sdjcu> If I run 'netstat -a' I cant see telnet or ftp listening, eg 'netstat
>> sdjcu> -a |grep telnet' returns nothing whereas on a good system it shows
>> sdjcu>
>> >>netstat -a|grep telnet
>> sdjcu> tcp 0 0 *.telnet *.*
>> sdjcu> LISTEN
>> sdjcu>
>> sdjcu> I have checked things such as filepermissions, and inetd.conf looks OK.
>> sdjcu>
>> sdjcu> Do you have any suggestions.
>> sdjcu>
>> sdjcu> Regards,
>> sdjcu> Scott
>> sdjcu>
>>
>> Have you tried starting those servers, e.g., # startsrc -t 'telnet'
>> The error you get might shed some light... Any error log entries?
>> Are the services defined in /etc/services?
>>
>> -Bela (5300-04-01)
>> --
>> "... I shook my family tree, and a bunch of NUTS fell out ..."
sdjcu>
sdjcu>
sdjcu> I have turned on debug mode for inetd and get this in /tmp/syslog.out
sdjcu>
sdjcu> ar 31 11:16:09 mcsjl40b syslog:info syslogd: restart
sdjcu> Mar 31 11:16:25 mcsjl40b daemon:debug inetd[356414]: ADD : ftp
sdjcu> proto=tcp, wait=0(src=0), user=root builtin=0 server=/usr/sbin/ftpd
sdjcu> Mar 31 11:16:25 mcsjl40b daemon:err|error inetd[356414]: ftp/tcp: bind:
sdjcu> Addr family not supported by protocol
<snip><snip><snip><snip>
sdjcu>
sdjcu>

Scott,

I am not a TCP/IP guru by any means; however, I notice that for all the
failed services "proto=tcp". Looking at my /etc/inetd.conf, I see tcp6.

For instance:
ftp stream tcp6 nowait root /usr/sbin/ftpd ftpd
and similarly for 'telnet, shell, login, exec'. But:
imap2 stream tcp nowait root /usr/sbin/imapd imapd

We do NOT use IPv6, mind you.

I believe the error "Addr family not supported by protocol" indicates a
protocol mismatch. Try changing tcp -> tcp6 in the errorneous entries of
inetd.conf and see what happens (can't be worse).

-Bela
--
"... I shook my family tree, and a bunch of NUTS fell out ..."