Polarhome service port-forwarding guide

polarhome.com realm offers shell accounts, as well as other access possibilities like web hosting, mail and other services on different operating systems, but because of limited IP addresses, we have to use port forwarding instead of normal direct access to certain hosts/services.

How does it work?

polarhome.com is accesable from both IPv4 and IPv6 (the next generation IP protocol) networks.

In IPv4 network resolution whole polarhome.com realm has one and only one IP address. Therefore not just IP based vhostsing is not possible but we have to use so called port forwarding techniqe (NAT/PAT mappings) in order to add direct access to inner servers that run behind the gateway server. These are non standard solutions and be prepared that it requires extra settings in your browser and mail client etc. However it is not magic either. If you follow the rules described below - you should be able to utilize whole polarhome.
IPv6, from other side has plenty of address space therefore polarhome.com can appreciate not just direct access to servers, but IP based vhosts as well, if needed. Most of the servers have IPv6 support and polarhome internal network is native IPv6 based. Drawback with IPv6 is that, it is not as popular as IPv4, thought polarhome.com generates about 5% of network traffic through IPv6 connections.

From IPv6 network all polarhome.com servers are accesable through domain name polarhome.com, as redhat.polarhome.com that is not visible on IPv4 is directly accesable from IPv6 as redhat.polarhome.com as well as all other server for ex. alpha.polarhome.com, freebsd.polarhome.com or solaris.polarhome.com etc.
Please note, that smtp is not configured to accept IPv6 connections for security resons (but e-mail addresses like username@hostname.polarhome.com can be used). Also on some hosts, some services might fail with IPv6. These services will be upgraded continously as soon IPv6 development on that platform moves forward.

IPv6 Certification Badge for polarhome IPv6 Certification Badge for polarhome

IPv4 portforwarding
In IPv4 we have to make difference between Internet users (users coming from the Internet) and local users ( users that have already account on some polarhome server ). The table below describes how to access/use services on polarhome hosts, depending of user's relative source host.

Detailed description of services and servers
Service Port Server Local user from Internet Internet example Note
ftp x1 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
n/a
ftp vax
ftp freebsd
ftp solaris
ftp openbsd
ftp netbsd
ftp debian
ftp alpha
ftp aix
ftp hpux
ftp redhat
ftp ultrix
ftp qnx
ftp irix
ftp tru64
ftp plan9
ftp suse
ftp openstep
ftp mandriva
ftp ubuntu
21->redhat
701->21
711->21
721->21
731->21
741->21
751->21
761->21
771->21
781->21
791->21
801->21
811->21
821->21
831->21
841->21
851->21
861->21
871->21
881->21
ftp ftp.polarhome.com
ftp ftp.polarhome.com 701
ftp ftp.polarhome.com 711
ftp ftp.polarhome.com 721
ftp ftp.polarhome.com 731
ftp ftp.polarhome.com 741
ftp ftp.polarhome.com 751
ftp ftp.polarhome.com 761
ftp ftp.polarhome.com 771
ftp ftp.polarhome.com 781
ftp ftp.polarhome.com 791
ftp ftp.polarhome.com 801
ftp ftp.polarhome.com 811
ftp ftp.polarhome.com 821
ftp ftp.polarhome.com 831
ftp ftp.polarhome.com 841
ftp suse.polarhome.com 851
ftp ftp.polarhome.com 861
ftp ftp.polarhome.com 871
ftp ftp.polarhome.com 881
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
telnet x2 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
n/a
telnet vax
telnet freebsd
telnet solaris
telnet openbsd
telnet netbsd
telnet debian
telnet alpha
telnet aix
telnet hpux
telnet redhat
telnet ultrix
telnet qnx
telnet irix
telnet tru64
telnet plan9
telnet suse
telnet openstep
telnet mandriva
telnet ubuntu
23->redhat
702->23
712->23
722->23
732->23
742->23
752->23
762->23
772->23
782->23
792->23
802->23
812->23
822->23
832->23
842->23
852->23
862->23
872->23
882->23
telnet gate.polarhome.com
telnet gate.polarhome.com 702
telnet gate.polarhome.com 712
telnet gate.polarhome.com 722
telnet gate.polarhome.com 732
telnet gate.polarhome.com 742
telnet gate.polarhome.com 752
telnet gate.polarhome.com 762
telnet gate.polarhome.com 772
telnet gate.polarhome.com 782
telnet gate.polarhome.com 792
telnet gate.polarhome.com 802
telnet gate.polarhome.com 812
telnet gate.polarhome.com 822
telnet gate.polarhome.com 832
telnet gate.polarhome.com 842
telnet suse.polarhome.com 852
telnet gate.polarhome.com 862
telnet gate.polarhome.com 872
telnet gate.polarhome.com 882
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
http x3 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
http://www
http://vax
http://freebsd
http://solaris
http://openbsd
http://netbsd
http://debian
http://alpha
http://aix
http://hpux
http://redhat
http://ultrix
http://qnx
http://irix
http://tru64
http://plan9
http://suse
n/a
http://mandriva
http://ubuntu
direct
703->80
713->80
723->80
733->80
743->80
753->80
763->80
773->80
783->80
793->80
803->80
813->80
823->80
833->80
843->80
853->80
n/a
873->80
883->80
http://www.polarhome.com
http://www.polarhome.com:703
http://www.polarhome.com:713
http://www.polarhome.com:723
http://www.polarhome.com:733
http://www.polarhome.com:743
http://www.polarhome.com:753
http://www.polarhome.com:763
http://www.polarhome.com:773
http://www.polarhome.com:783
http://www.polarhome.com:793
http://www.polarhome.com:803
http://www.polarhome.com:813
http://www.polarhome.com:823
http://www.polarhome.com:833
http://www.polarhome.com:843
http://suse.polarhome.com:853
n/a
http://www.polarhome.com:873
http://www.polarhome.com:883
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
https/ssl x4 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
https://www
n/a
https://freebsd
n/a
https://openbsd
n/a
https://debian
https://alpha
n/a
n/a
https://redhat
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
direct
-
714->443
-
734->443
-
754->443
764->443
-
-
794->443
-
-
-
-
-
-
-
-
-
https://www.polarhome.com
n/a
https://www.polarhome.com:714
n/a
https://www.polarhome.com:734
n/a
https://www.polarhome.com:754
https://www.polarhome.com:764
n/a
n/a
https://www.polarhome.com:794
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
-
-
-
TODO
-
TODO
-
-
-
-
-
-
-
-
-
-
TODO
-
-
-
ssh x5 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
n/a
ssh vax
ssh freebsd
ssh solaris
ssh openbsd
ssh netbsd
ssh debian
ssh alpha
ssh aix
ssh hpux
ssh redhat
ssh ultrix
ssh qnx
ssh irix
ssh tru64
ssh plan9
ssh suse
ssh openstep
ssh mandriva
ssh ubuntu
22->redhat
705->22
715->22
725->22
735->22
745->22
755->22
765->22
775->22
785->22
795->22
805->22
815->22
825->22
835->22
845->22
855->22
865->22
875->22
885->22
ssh gate.polarhome.com
ssh gate.polarhome.com -p 705
ssh gate.polarhome.com -p 715
ssh gate.polarhome.com -p 725
ssh gate.polarhome.com -p 735
ssh gate.polarhome.com -p 745
ssh gate.polarhome.com -p 755
ssh gate.polarhome.com -p 765
ssh gate.polarhome.com -p 775
ssh gate.polarhome.com -p 785
ssh gate.polarhome.com -p 795
ssh gate.polarhome.com -p 805
ssh gate.polarhome.com -p 815
ssh gate.polarhome.com -p 825
ssh gate.polarhome.com -p 835
ssh gate.polarhome.com -p 845
ssh suse.polarhome.com -p 855
ssh gate.polarhome.com -p 865
ssh gate.polarhome.com -p 875
ssh gate.polarhome.com -p 885
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
pop3 x6 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
direct access from hosts 110->redhat
706->110
716->110
726->110
736->110
746->110
756->110
766->110
776->110
786->110
796->110
806->110
816->110
826->110
836->110
846->110
856->110
866->110
876->110
886->110
mail.polarhome.com
mail.polarhome.com:706 (or web)
mail.polarhome.com:716 (or web)
mail.polarhome.com:726 (or web)
mail.polarhome.com:736 (or web)
mail.polarhome.com:746 (or web)
mail.polarhome.com:756 (or web)
mail.polarhome.com:766 (or web)
mail.polarhome.com:776 (or web)
mail.polarhome.com:786 (or web)
mail.polarhome.com:796 (or web)
mail.polarhome.com:806 (or web)
mail.polarhome.com:816 (or web)
mail.polarhome.com:826 (or web)
mail.polarhome.com:836 (or web)
mail.polarhome.com:846 (or web)
suse.polarhome.com:856 (or web)
mail.polarhome.com:866 (or web)
mail.polarhome.com:876 (or web)
mail.polarhome.com:886 (or web)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
imap x7 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
direct access from hosts 143->redhat
-
717->143
727->143
737->143
747->143
757->143
767->143
777->143
787->143
797->143
807->143
817->143
827->143
837->143
847->143
857->143
867->143
877->143
887->143
mail.polarhome.com
n/a
mail.polarhome.com:717
mail.polarhome.com:727
mail.polarhome.com:737
mail.polarhome.com:747
mail.polarhome.com:757
mail.polarhome.com:767
mail.polarhome.com:777
mail.polarhome.com:787
mail.polarhome.com:797
mail.polarhome.com:807
mail.polarhome.com:817
mail.polarhome.com:827
mail.polarhome.com:837
mail.polarhome.com:847
suse.polarhome.com:847
mail.polarhome.com:857
mail.polarhome.com:867
mail.polarhome.com:887
-
TODO
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
usermin x8 gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
n/a
n/a
http://freebsd:81
http://solaris:81
http://openbsd:81
http://netbsd:81
http://debian:81
n/a
http://aix:81
http://hpux:81
http://redhat:81
http://ultrix:81
http://qnx:81
http://irix:81
http://tru64:81
n/a
http://suse:81
http://ubuntu:81
http://mandriva:81
n/a
-
-
718->81
728->81
738->81
748->81
758->81
-
778->81
788->81
798->81
808->81
818->81
828->81
838->81
-
858->81
-
878->81
888->81
n/a
n/a
http://www.polarhome.com:718
http://www.polarhome.com:728
http://www.polarhome.com:738
http://www.polarhome.com:748
http://www.polarhome.com:758
n/a
http://www.polarhome.com:778
http://www.polarhome.com:788
http://www.polarhome.com:798
http://www.polarhome.com:808
http://www.polarhome.com:818
http://www.polarhome.com:828
http://www.polarhome.com:838
n/a
http://suse.polarhome.com:858
n/a
http://www.polarhome.com:878
http://www.polarhome.com:888
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DISABLED
-
-
-
smtp - gate.polarhome.com
vax.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
alpha.polarhome.com
aix.polarhome.com
hpux.polarhome.com
redhat.polarhome.com
ultrix.polarhome.com
qnx.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
direct access from hosts port forward n/a
using MX records
mail is forwarded to each host
or relayed to Internet by
mail.polarhome.com (port 25)
but just via IPv4

POP3/IMAP auth needed before SMTP
-
no relay
-
-
-
-
-
no relay
no relay
-
-
no relay
-
-
-
no relay
no relay/to be fixed
-
-
-

Easy key
To make the complicated path of port forwarding easier to remember and follow, we created a simple key. The rules are:

Example 1
The big table above mark service ports with x[number]. You may use these ports as described below: Example 2
We want to access from Internet POP3 service on vax.polarhome.com:

Direct access ports

Because of mentioned port forward functionality, polarhome.com splits available port range among servers, to give equal Internet accesibility for each port-forwarded server. It means, that if user want to advertise some public service that should be accesible from the Internet, it should be listening on some port from the given range... otherwise service will run, but it will not be reachable from the Internet, just from polarhome.com servers.

Direct access ports table
Server Open ports
ultrix.polarhome.com
vax.polarhome.com
alpha.polarhome.com
qnx.polarhome.com
redhat.polarhome.com
freebsd.polarhome.com
solaris.polarhome.com
openbsd.polarhome.com
netbsd.polarhome.com
debian.polarhome.com
aix.polarhome.com
hpux.polarhome.com
irix.polarhome.com
tru64.polarhome.com
openindiana.polarhome.com
suse.polarhome.com
openstep.polarhome.com
mandriva.polarhome.com
ubuntu.polarhome.com
unixware.polarhome.com
scosysv.polarhome.com
dragonfly.polarhome.com
centos.polarhome.com
miros.polarhome.com
1025-1999
2000-2999
3000-3999
4000-4999
5000-9999
10000-14999
25000-29999
15000-19999
20000-24999
30000-34999
35000-39999
40000-44999
45000-46999
47000-49999
50000-51999
59000-59999
52000-52999
54000-55999
56000-58999
60000-60999
61000-61999
62000-62999
63000-63999
64000-64100

Example 3
We want to run an eggdrop on debian.polarhome.com:

polarhome.com IRC servers/services

Read more about irc.polarhome.com servers and IRC services that users can provide at IRC page

Guest account

In every listed system should exists guest account:
Username: guest
Password: guest

it might be limited access comparing with normal user accounts.
...on redhat, freebsd, solaris and other unix like system it is disabled because of heavy abuse.

Please send your questions to support@polarhome.com

Note: I'm terribly sorry because of inconvenience, but this is the only way how polarhome.com can provide services on more than one OS' for free (or almost for free).
More information how port forwarding works and how it can be implemented, could be find in Oskar Andreasson's excellent Iptables Tutorial and also in Kyle Wheeler's Firewalling - iptables.

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