I can't connect to my computer
i installed a hamm system (Scientific Workstation) and can't connect to it.
Neither ping, telnet nor smtp or something else works. It's like there is
no network installed. But it is, I, sitting at the computer, can connect to any other machine, I can browse the web, send email or do other stuff that sends
something back to the machine. Can anybody tell me what's going on here?
The hostname is kik.informatik.fh-dortmund.de. Feel free to scan it or whatever
might lead to an answer.
At first I thought about hosts.deny and hosts.allow, but they look innocent:
$ cat /etc/hosts.allow
# /etc/hosts.allow: list of hosts that are allowed to access the system.
# See the manual pages hosts_access(5), hosts_options(5)
# and /usr/doc/netbase/portmapper.txt.gz
#
# Example: ALL: LOCAL @some_netgroup
# ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
#
# If you're going to protect the portmapper use the name "portmap" for the
# daemon name. Remember that you can only use the keyword "ALL" and IP
# addresses (NOT host or domain names) for the portmapper. See portmap(8)
# and /usr/doc/netbase/portmapper.txt.gz for further information.
#
ALL: ALL
$ cat /etc/hosts.deny
# /etc/hosts.deny: list of hosts that are _not_ allowed to access the system.
# See the manual pages hosts_access(5), hosts_options(5)
# and /usr/doc/netbase/portmapper.txt.gz
#
# Example: ALL: some.host.name, .some.domain
# ALL EXCEPT in.fingerd: other.host.name, .other.domain
#
# If you're going to protect the portmapper use the name "portmap" for the
# daemon name. Remember that you can only use the keyword "ALL" and IP
# addresses (NOT host or domain names) for the portmapper. See portmap(8)
# and /usr/doc/netbase/portmapper.txt.gz for further information.
#
# The PARANOID wildcard matches any host whose name does not match its
# address.
ALL: PARANOID
Then I thought maybe there's a firewall installed. But the only references to
ipfwadm I could find in the startup files are for preventing IP spoofed
connections.
Here's my inetd.conf, maybe it defaults to something weird which I don't
recognize:
$ cat /etc/inetd.conf
# /etc/inetd.conf: see inetd(8) for further informations.
#
# Internet server configuration database
#
#
# Lines starting with "#:LABEL:" or "#<off>#" should not
# be changed unless you know what you are doing!
#
# If you want to disable an entry so it isn't touched during
# package updates just comment it out with a single '#' character.
#
# Packages should modify this file by using update-inetd(8)
#
# <service_name> <sock_type> <proto> <flags> <user> <server_path> <args>
#
#:INTERNAL: Internal services
#echo stream tcp nowait root internal
#echo dgram udp wait root internal
#chargen stream tcp nowait root internal
#chargen dgram udp wait root internal
discard stream tcp nowait root internal
discard dgram udp wait root internal
daytime stream tcp nowait root internal
daytime dgram udp wait root internal
time stream tcp nowait root internal
time dgram udp wait root internal
#:STANDARD: These are standard services.
ftp stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.ftpd
telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.telnetd
#:BSD: Shell, login, exec and talk are BSD protocols.
shell stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.rshd
login stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.rlogind
exec stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.rexecd
ntalk dgram udp wait root /usr/sbin/tcpd /usr/sbin/in.ntalkd
talk dgram udp wait root /usr/sbin/tcpd /usr/sbin/in.talkd
#:MAIL: Mail, news and uucp services.
#:INFO: Info services
finger stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/in.fingerd
ident stream tcp nowait nobody /usr/sbin/identd identd -i
#:BOOT: Tftp service is provided primarily for booting. Most sites
# run this only on machines acting as "boot servers."
#tftp dgram udp wait nobody /usr/sbin/tcpd /usr/sbin/in.tftpd /boot
#bootps dgram udp wait root /usr/sbin/bootpd bootpd -i -t 120
#:RPC: RPC based services
#mountd/1 dgram rpc/udp wait root /usr/sbin/tcpd /usr/sbin/rpc.mountd
#rstatd/1-3 dgram rpc/udp wait root /usr/sbin/tcpd /usr/sbin/rpc.rstatd
#rusersd/2-3 dgram rpc/udp wait root /usr/sbin/tcpd /usr/sbin/rpc.rusersd
#walld/1 dgram rpc/udp wait root /usr/sbin/tcpd /usr/sbin/rpc.rwalld
#:HAM-RADIO: amateur-radio services
#:OTHER: Other services
saft stream tcp nowait root /usr/sbin/tcpd /usr/sbin/sendfiled
smtp stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.smtpd
route prints:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
localnet * 255.255.255.0 U 0 0 11 eth0
127.0.0.0 * 255.0.0.0 U 0 0 2 lo
default ki.informatik.f 0.0.0.0 UG 1 0 51 eth0
ifconfig prints:
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:60 errors:0 dropped:0 overruns:0 frame:0
TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0
eth0 Link encap:Ethernet HWaddr 00:00:92:90:90:D5
inet addr:193.25.19.98 Bcast:193.25.19.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10800 errors:0 dropped:0 overruns:0 frame:0
TX packets:7288 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0
Interrupt:11 Base address:0xe000
Thanks for your help
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