Re: localhost cannot be resolved
Hello Alexander, At the same time fetchmail causes ipfw to produce these messages: Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from ::0001:1063 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 from 127.0.0.1:1065 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from ::0001:1066 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 from 127.0.0.1:1067 These strange things started to happen soon after I cvsup'ed ports-all and reinstalled libtool. I also compiled firewall support into the kernel a few days ago. Just in case any of this might be related to the problem. Maybe this question sounds trivial, but do you have identd running (or what exactly is it called in *BSD?)? I don't know if smtp somehow depends on ident, some things do. Tell me if it does(n't). Maybe just rejecting connections to port 113 will suffice? I am not really sure about your previous configuration. Bye, Leonard. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: localhost cannot be resolved
On Fri, 11 Aug 2000, Alexander Anderson wrote: Hello everyone! I sent this question to freebsd-questions, but no one had replied, so I decided to try my luck here. I'm having trouble resolving "localhost" for telnet and fetchmail. All other programs (ftp, rlogin, rsh, ping, lynx) seem to understand "localhost". I "me too"; but telnet can't resolve anything, while the others work. I have a current workstation, which makes world almost every night. It resolves ok. I then have my gateway/ppp/proxy which I regularly updates by nfsmounting /usr/src and /usr/obj from the workstation, and then make installworld. However, something must have happened, because as mentioned telnet won't resolve anything. (And perl 5.6 won't install either...) Leif To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: localhost cannot be resolved
On Fri, 11 Aug 2000 21:57:50 -0400 (EDT) Alexander Anderson [EMAIL PROTECTED] said: cactoss I'm having trouble resolving "localhost" for telnet and fetchmail. All cactoss other programs (ftp, rlogin, rsh, ping, lynx) seem to understand cactoss "localhost". Which version of FreeBSD are you using? cactoss I'm going to include my configuration files. Please tell me if you'd like cactoss to get more info on something. cactoss cat /etc/hosts cactoss 127.0.0.1 localhost localhost.my.domain myname.my.domain cactoss ::1 localhost localhost.my.domain myname.my.domain cactoss cat /etc/host.conf cactoss hosts cactoss bind cactoss cat /etc/resolv.conf cactoss nameserver 209.226.175.224 cactoss nameserver 204.101.251.2 cactoss All looks right, does it? It seems right for me. cactoss Now, when I run telnet or fetchmail, they complain. telnet localhost cactoss localhost: No address associated with hostname echo $? cactoss 1 It seems getaddrinfo(3) was failed. What's curious. Rlogin, rsh and ftp call getaddrinfo(3), too. Why is it only telnet and fetchmail? cactoss fetchmail cactoss 9 messages for MYUSERNAME at pop.mail.yahoo.com (64648 octets). cactoss reading message 1 of 9 (13403 octets) .fetchmail: SMTP connect to cactoss localhost failed cactoss fetchmail: SMTP transaction error while fetching from pop.mail.yahoo.com cactoss fetchmail: Query status=SMTP echo $? cactoss 10 cactoss At the same time fetchmail causes ipfw to produce these messages: cactoss Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from cactoss ::0001:1063 cactoss Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 cactoss from 127.0.0.1:1065 cactoss Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from cactoss ::0001:1066 cactoss Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 cactoss from 127.0.0.1:1067 You don't have SMTP/IPv6 listen. This should be OK. So, SMTP connection to ::1 was fail. Then, SMTP connection to 127.0.0.1 was tried. It seems IDENT query was made in correspondings to SMTP connection to 127.0.0.1. I think you have SMTP/IPv4 listen. cactoss Actually, could someone tell me, what does ::0001 mean? Should this be in cactoss /etc/hosts with an alias of localhost? ::0001 is same as ::1. Leading zero can be omittled in IPv6 address format. cactoss These strange things started to happen soon after I cvsup'ed ports-all and cactoss reinstalled libtool. I also compiled firewall support into the kernel a cactoss few days ago. Just in case any of this might be related to the problem. I think libtool has no relation with this problem. It may rely on firewall rule. -- Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] http://www.imasy.org/~ume/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: localhost cannot be resolved
Which version of FreeBSD are you using?
4.0-RELEASE
telnet localhost
cactoss localhost: No address associated with hostname
echo $?
cactoss 1
It seems getaddrinfo(3) was failed.
What's curious. Rlogin, rsh and ftp call getaddrinfo(3), too. Why is
it only telnet and fetchmail?
I tried to look at the sources for telnet. In file commands.c:2292, there's
an assignment of variable "family". I couldn't understand where the variable
is coming from. Still, I wrote a simple program to see under what
circumstances getaddrinfo fails for localhost. It doesn't seem to fail at
all?!..
#include stdio.h
#include sys/types.h
#include sys/socket.h
#include netdb.h
#include string.h
int main( int argc, char** argv ) {
struct addrinfo hints, *res;
int status;
if ( argc != 2 ) {
fprintf( stderr, "usage: %s hostname\n", argv[0] );
exit(2);
}
memset( hints, 0, sizeof(hints) );
/*hints.ai_flags = AI_NUMERICHOST;*/
/*hints.ai_flags = AI_PASSIVE;*/
hints.ai_flags = AI_CANONNAME;
/*hints.ai_family = PF_UNSPEC;*/
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
status = getaddrinfo( argv[1], "telnet", hints, res );
if ( status == 0 ) {
printf( "success\n" );
} else {
fprintf( stderr, "%s\n", gai_strerror( status ) );
}
return 0;
}
[skipped]
You don't have SMTP/IPv6 listen. This should be OK.
So, SMTP connection to ::1 was fail. Then, SMTP connection to
127.0.0.1 was tried.
It seems IDENT query was made in correspondings to SMTP connection to
127.0.0.1. I think you have SMTP/IPv4 listen.
Yes, sendmail is listening on port 25. I can telnet 127.0.0.1 25.
Could you please take a look at `ifconfig lo0`:
lo0: flags=8049UP,LOOPBACK,RUNNING,MULTICAST mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff00
Does it look okay?
[skipped]
I think libtool has no relation with this problem. It may rely on
firewall rule.
My firewall is open. I decided that I'd only block certain ports:
# ipfw show
00100 560 33466 allow ip from any to any via lo0
002000 0 deny ip from any to 127.0.0.0/8
00300 21 924 allow tcp from any to any 25 via tun0 setup
00400 572524 allow tcp from any to any 80 via tun0 setup
00500 10 424 deny tcp from any to any 1-1024 in recv tun0
00600 682860 deny tcp from any 1-1024 to any out xmit tun0
007000 0 deny tcp from any to any 6000-6063 in recv tun0
008000 0 deny tcp from any 6000-6063 to any out xmit tun0
009000 0 deny tcp from any to any 3306 in recv tun0
010000 0 deny tcp from any 3306 to any out xmit tun0
65000 4982 1773612 allow ip from any to any
655350 0 deny ip from any to any
I also tried flushing all the rules and allowing all traffic to see whether
the firewall was the cause of my problem. I didn't change anything, so I
doubt it is the firewall.
One question. Firewall rules apply to both IPv4 and IPv6, right? There
shouldn't be separate rules to IPv6, should there?
Thanks!
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Re: localhost cannot be resolved
On Sat, 12 Aug 2000 10:47:43 -0400 (EDT) Alexander Anderson [EMAIL PROTECTED] said: Which version of FreeBSD are you using? cactoss 4.0-RELEASE Please update to 4.1-RELEASE. 4.0-RELEASE's getaddrinfo(3) has DNS query order problem and it was fixed in 4.1-RELEASE. Or, at least you should update libc/net/getaddrinfo.c and libc/net/name6.c I don't know why getaddrinfo(3) fails for localhost query, exactly. However, probably updating to 4.1-RELEASE fixes your problem. cactoss I tried to look at the sources for telnet. In file commands.c:2292, there's cactoss an assignment of variable "family". I couldn't understand where the variable cactoss is coming from. The variable `family' is came from command line of telnet. If -4 is specified, telnet tries only AF_INET. If -6 is specified, telnet tries only AF_INET6. Default is AF_UNSPEC, that is try both IPv6 and IPv4. cactoss Could you please take a look at `ifconfig lo0`: cactoss lo0: flags=8049UP,LOOPBACK,RUNNING,MULTICAST mtu 16384 cactossinet6 fe80::1%lo0 prefixlen 64 scopeid 0x6 cactossinet6 ::1 prefixlen 128 cactossinet 127.0.0.1 netmask 0xff00 cactoss Does it look okay? It seems fine. cactoss One question. Firewall rules apply to both IPv4 and IPv6, right? There cactoss shouldn't be separate rules to IPv6, should there? No. Rules for IPv6 is set separately by ip6fw. Firewall for IPv6 is enabled by specifying `options IPV6FIREWALL' in your kernel config. -- Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] http://www.imasy.org/~ume/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
localhost cannot be resolved
Hello everyone! I sent this question to freebsd-questions, but no one had replied, so I decided to try my luck here. I'm having trouble resolving "localhost" for telnet and fetchmail. All other programs (ftp, rlogin, rsh, ping, lynx) seem to understand "localhost". I'm going to include my configuration files. Please tell me if you'd like to get more info on something. cat /etc/hosts 127.0.0.1 localhost localhost.my.domain myname.my.domain ::1 localhost localhost.my.domain myname.my.domain cat /etc/host.conf hosts bind cat /etc/resolv.conf nameserver 209.226.175.224 nameserver 204.101.251.2 All looks right, does it? Now, when I run telnet or fetchmail, they complain. telnet localhost localhost: No address associated with hostname echo $? 1 fetchmail 9 messages for MYUSERNAME at pop.mail.yahoo.com (64648 octets). reading message 1 of 9 (13403 octets) .fetchmail: SMTP connect to localhost failed fetchmail: SMTP transaction error while fetching from pop.mail.yahoo.com fetchmail: Query status=SMTP echo $? 10 At the same time fetchmail causes ipfw to produce these messages: Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from ::0001:1063 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 from 127.0.0.1:1065 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP ::0001:25 from ::0001:1066 Aug 11 21:41:47 mydomain /kernel: Connection attempt to TCP 127.0.0.1:113 from 127.0.0.1:1067 Actually, could someone tell me, what does ::0001 mean? Should this be in /etc/hosts with an alias of localhost? These strange things started to happen soon after I cvsup'ed ports-all and reinstalled libtool. I also compiled firewall support into the kernel a few days ago. Just in case any of this might be related to the problem. Thank you all for any suggestions! To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
