I have a question: I updated my debian squeeze to the latest kernel 3.0.18 and now the lsmod command shows no kernel modules and arnos firewall http://rocky.eld.leidenuniv.nl/joomla/ throws a bunch of errors when it is started. The firewall however seems to work.

Are the kernel modules for iptables conntrack etc. compiled into the kernel and not loaded into the kernel?

I am just getting nervous when my ipatbles make strange things...

/sbin/modprobe ip_tables: Module not found! Assuming compiled-in-kernel!
WARNING: (1) Module(s) "nf_conntrack|ip_conntrack" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "nf_conntrack_ftp|ip_conntrack_ftp" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_conntrack|ipt_conntrack" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_limit|ipt_limit" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_state|ipt_state" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_multiport|ipt_multiport" failed to load. Assuming compiled-in-kernel!
/sbin/modprobe iptable_filter: Module not found! Assuming compiled-in-kernel!
/sbin/modprobe iptable_mangle: Module not found! Assuming compiled-in-kernel!
/sbin/modprobe ipt_REJECT: Module not found! Assuming compiled-in-kernel!
/sbin/modprobe ipt_LOG: Module not found! Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_TCPMSS|ipt_TCPMSS" failed to load. Assuming compiled-in-kernel!
WARNING: (1) Module(s) "xt_DSCP|ipt_DSCP|ipt_TOS" failed to load. Assuming compiled-in-kernel!
/sbin/iptables: (1) iptables: No chain/target/match by that name.
/sbin/iptables: (1) iptables: No chain/target/match by that name.

Those are just warnings, not errors. Yes, they are compiled into Linode's kernels and not separated out as modules.

Is there information available how the linode kernels are built? Which options and compiled in modules?

You can check /proc/config.gz, or zcat /proc/config.gz

_________________
rsk, providing useless advice on the Internet since 2005.