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|
{ config, pkgs, ... }:
{
imports = [
./sshkeys.nix
./iptables
];
nix.useChroot = true;
users.mutableUsers = false;
boot.tmpOnTmpfs = true;
# see tmpfiles.d(5)
systemd.tmpfiles.rules = [
"d /tmp 1777 root root - -"
];
# multiple-definition-problem when defining environment.variables.EDITOR
environment.extraInit = ''
EDITOR=vim
PAGER=most
'';
environment.systemPackages = with pkgs; [
git
most
rxvt_unicode.terminfo
#network
iptables
];
programs.bash = {
enableCompletion = true;
interactiveShellInit = ''
HISTCONTROL='erasedups:ignorespace'
HISTSIZE=65536
HISTFILESIZE=$HISTSIZE
shopt -s checkhash
shopt -s histappend histreedit histverify
shopt -s no_empty_cmd_completion
complete -d cd
#fancy colors
if [ -e ~/LS_COLORS ]; then
eval $(dircolors ~/LS_COLORS)
fi
if [ -e /etc/nixos/dotfiles/link ]; then
/etc/nixos/dotfiles/link
fi
'';
promptInit = ''
if test $UID = 0; then
PS1='\[\033[1;31m\]\w\[\033[0m\] '
elif test $UID = 1337; then
PS1='\[\033[1;32m\]\w\[\033[0m\] '
else
PS1='\[\033[1;33m\]\u@\w\[\033[0m\] '
fi
if test -n "$SSH_CLIENT"; then
PS1='\[\033[35m\]\h'" $PS1"
fi
'';
};
security.setuidPrograms = [
"sendmail"
];
services.gitolite = {
enable = true;
dataDir = "/home/gitolite";
adminPubkey = config.sshKeys.lass.pub;
};
services.openssh = {
enable = true;
hostKeys = [
# XXX bits here make no science
{ bits = 8192; type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
];
};
services.journald.extraConfig = ''
SystemMaxUse=1G
RuntimeMaxUse=128M
'';
lass.iptables = {
enable = true;
tables = {
filter.INPUT.policy = "DROP";
filter.FORWARD.policy = "DROP";
filter.INPUT.rules = [
{ predicate = "-i lo"; target = "ACCEPT"; }
{ predicate = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; }
{ predicate = "-p icmp"; target = "ACCEPT"; }
{ predicate = "-p tcp --dport 22"; target = "ACCEPT"; }
];
};
};
#Networking.firewall = {
# enable = true;
# allowedTCPPorts = [
# 22
# ];
# extraCommands = ''
# iptables -A INPUT -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
# iptables -A INPUT -j ACCEPT -i lo
# #http://serverfault.com/questions/84963/why-not-block-icmp
# iptables -A INPUT -j ACCEPT -p icmp
# #TODO: fix Retiolum firewall
# #iptables -N RETIOLUM
# #iptables -A INPUT -j RETIOLUM -i retiolum
# #iptables -A RETIOLUM -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
# #iptables -A RETIOLUM -j REJECT -p tcp --reject-with tcp-reset
# #iptables -A RETIOLUM -j REJECT -p udp --reject-with icmp-port-unreachable
# #iptables -A RETIOLUM -j REJECT --reject-with icmp-proto-unreachable
# #iptables -A RETIOLUM -j REJECT
# '';
#};
}
|
