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ip port forwarding :/



jeg har fulgt 
http://metalab.unc.edu/mdw/HOWTO/IP-Masquerade-HOWTO-6.html#Forwarders

men det virker stadig ikke

sslug@sslug net]# ipchains -L -M
IP masquerading entries
prot expire   source               destination          ports
TCP  00:58.26 telekonto.kollegiegaarden.dk jon707.kollegiegaarden.dk www
(80) -> 3941


jeg har en portfw i /proc/net/ip_masq

sslug@sslug ip_masq]# ipmasqadm portfw -l
prot localaddr            rediraddr               lport    rport  pcnt
pref
TCP  loghost.kollegiegaarden.dk telekonto.kollegiegaarden.dk      www
www    10    10


Men naar jeg forsoeger at telnette til port 80 fra en anden maskine, saa
virker det sku ikke :(

nmap giver 
80      filtered    tcp       http                    

i tcpdump kan jeg se at den ikke sender nogle pakker ud til hosten.
fra at firewallen sender til webserveren ??

Det skal lige naevnes at webserveren ikke sidder bag firewallen, men ved
siden af paa samme ethernet.
Det er meningen at den skal ind bag ved naar det virker.

Jeg kan sagtens telnette fra firewallen til webserveren paa port 80
eller fra min worksttion til webserveren, eller fra min workstation til
firewall, der ogsaa koerer ssh, saa bare det er paa port 22, saa virker
det, bare ikke port 80
(port 22 forwardes ikke)


nogen ideer ??

ion++





 
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