Re: help with firewall

2003-07-03 Thread Horst Pflugstaedt
On Wed, Jul 02, 2003 at 11:38:57PM +0200, [EMAIL PROTECTED] wrote:
> Hi,
> Can anyone help me with this firewall.I would like to change
> INTNET="192.168.0.0/24" to more exacts ips like 192.168.0.1,192.168.0.22 and
> so one.

you will either have to rewrite every rule matching 192.168.0.0/24 to
match every single host - so 10 hosts make ten rules - or you switch
to a smaller subnet e.g. 192.168.0.0/27 going from IP 192.168.0.1 to
192.168.0.30 with a Broadcast .31

the later only leaves less free IP in your subnet, but will help to
reduce work.


Gruss
Horst

-- 
Have you noticed the way people's intelligence capabilities decline
sharply the minute they start waving guns around?
-- Dr. Who



Re: help with firewall

2003-07-03 Thread Horst Pflugstaedt
On Wed, Jul 02, 2003 at 11:38:57PM +0200, [EMAIL PROTECTED] wrote:
> Hi,
> Can anyone help me with this firewall.I would like to change
> INTNET="192.168.0.0/24" to more exacts ips like 192.168.0.1,192.168.0.22 and
> so one.

you will either have to rewrite every rule matching 192.168.0.0/24 to
match every single host - so 10 hosts make ten rules - or you switch
to a smaller subnet e.g. 192.168.0.0/27 going from IP 192.168.0.1 to
192.168.0.30 with a Broadcast .31

the later only leaves less free IP in your subnet, but will help to
reduce work.


Gruss
Horst

-- 
Have you noticed the way people's intelligence capabilities decline
sharply the minute they start waving guns around?
-- Dr. Who


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help with firewall

2003-07-02 Thread kcienciala
Hi,
Can anyone help me with this firewall.I would like to change
INTNET="192.168.0.0/24" to more exacts ips like 192.168.0.1,192.168.0.22 and
so one.
Thanks for any help.
Charls

IPTABLES="/sbin/iptables"

EXTDEV="ppp0"

EXTIP=`ifconfig $EXTDEV | grep "inet addr:" | \
 awk -F: {'print $2'} | cut -d\  -f 1`
if [ -z "${EXTIP}" ]; then
 exit 1
fi
#EXTIP="x.x.x.x"

INTDEV="eth0"


INTIP=`ifconfig $INTDEV | grep "inet addr:" | \
 awk -F: {'print $2'} | cut -d\  -f 1`
if [ -z "${INTIP}" ]; then
 exit 1
fi

#INTIP="y.y.y.y"


INTNET="192.168.0.0/24"



echo "EXTDEV: ${EXTDEV} z ${EXTIP}"
echo "INTDEV: ${INTDEV} z ${INTIP}"

case "$1" in

start)

 echo -n "Starting firewall: "


 #modprobe ip_tables
 #modprobe ip_conntrack
 #modprobe ip_conntrack_ftp
 #modprobe ip_masq_ftp
 #modprobe ip_masq_irc
 #modprobe ip_masq_raudio



  $IPTABLES -t nat -A POSTROUTING -o $EXTDEV -j SNAT --to-source=$EXTIP




 $IPTABLES -F

  $IPTABLES -P INPUT DROP
 $IPTABLES -P OUTPUT DROP
 $IPTABLES -P FORWARD DROP

 #--==[ kernel ]==--
 #

  echo 1 > /proc/sys/net/ipv4/ip_forward

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts

  /bin/echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route

  /bin/echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses

 /bin/echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter

  $IPTABLES -A INPUT -i lo -j ACCEPT
 $IPTABLES -A OUTPUT -o lo -j ACCEPT


 #$IPTABLES -I FORWARD -p tcp -d $DSTIP --dport $SRCPRT -j ACCEPT
 #$IPTABLES -I FORWARD -p udp -d $DSTIP --dport $SRCPRT -j ACCEPT
 #$IPTABLES -t nat -A PREROUTING -p tcp -i $LOCALIF -s $ALLOWFROM -d
$SRCIP --dport $SRCPRT -j DNAT --to $DSTIP
 #$IPTABLES -t nat -A PREROUTING -p udp -i $LOCALIF -s $ALLOWFROM -d
$SRCIP --dport $SRCPRT -j DNAT --to $DSTIP



 #---==[  INPUT ]==---

 $IPTABLES -A INPUT -i $EXTDEV -p icmp -m state --state ESTABLISHED -j
ACCEPT
 $IPTABLES -A INPUT -i $EXTDEV -p icmp -m state --state RELATED -j ACCEPT
 # Przepuszczamy nawiazywanie polaczen
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state NEW -j ACCEPT
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state ESTABLISHED -j
ACCEPT
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state RELATED -j ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp -d 192.168.1.255 --dport 137:138 -j
DROP

  #** SSH **
  $IPTABLES -A INPUT -p tcp --sport 1024: --dport 22 -m state --state NEW -j
ACCEPT

 #** FTP **
  $IPTABLES -A INPUT  -p tcp --dport 21 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 21 -m state --state NEW -j ACCEPT

 #** DHCPD **
 $IPTABLES -A INPUT  -p tcp --dport 67 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 67 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p tcp --dport 68 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 68 -m state --state NEW -j ACCEPT



 #** HTTP **
 $IPTABLES -A INPUT -p tcp --sport 1024: --dport 80 -m state --state NEW -j
ACCEPT

 #** RPC **
 $IPTABLES -A INPUT -i $INTDEV -p tcp --dport 111 -m state --state NEW -j
ACCEPT
 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 111 -m state --state NEW -j
ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 2049 -m state --state NEW -j
ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 1026 -m state --state NEW -j
ACCEPT
 $IPTABLES -A INPUT -i $INTDEV -p tcp --dport 1026 -m state --state NEW -j
ACCEPT

 #** DNS **
 $IPTABLES -A INPUT -i $INTDEV -p udp --sport 1024: --dport 53 -m
state --state NEW -j ACCEPT
 # Transakcje serwer-serwer
 $IPTABLES -A INPUT -i $INTDEV -p udp --sport 53 --dport 53 -m state --state
NEW -j ACCEPT


 $IPTABLES -A INPUT -p tcp --sport 1024: --dport 113 -m state --state NEW -j
REJECT --reject-with icmp-port-unreachable

 $IPTABLES -A INPUT -m state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A INPUT -m state --state RELATED -j ACCEPT

 #$IPTABLES -A INPUT -j LOG --log-prefix "IPT INPUT: "
 $IPTABLES -A INPUT -j DROP


 #---==[  OUTPUT ]==---

  $IPTABLES -A OUTPUT -m state --state ! INVALID -j ACCEPT

  #$IPTABLES -A OUTPUT -j LOG --log-prefix "IPT OUTPUT: "
 $IPTABLES -A OUTPUT -j DROP


 #---==[  FORWARD ]==---

 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state NEW -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state RELATED -j ACCEPT


 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state NEW -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state RELATED -j ACCEPT

  $IPTABLES -A FORWARD -o $INTDEV -p tcp -d $INTNET --dport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -o $INTDEV -p tcp -d $INTNET --dport 1024:

help with firewall

2003-07-02 Thread kcienciala
Hi,
Can anyone help me with this firewall.I would like to change
INTNET="192.168.0.0/24" to more exacts ips like 192.168.0.1,192.168.0.22 and
so one.
Thanks for any help.
Charls

IPTABLES="/sbin/iptables"

EXTDEV="ppp0"

EXTIP=`ifconfig $EXTDEV | grep "inet addr:" | \
 awk -F: {'print $2'} | cut -d\  -f 1`
if [ -z "${EXTIP}" ]; then
 exit 1
fi
#EXTIP="x.x.x.x"

INTDEV="eth0"


INTIP=`ifconfig $INTDEV | grep "inet addr:" | \
 awk -F: {'print $2'} | cut -d\  -f 1`
if [ -z "${INTIP}" ]; then
 exit 1
fi

#INTIP="y.y.y.y"


INTNET="192.168.0.0/24"



echo "EXTDEV: ${EXTDEV} z ${EXTIP}"
echo "INTDEV: ${INTDEV} z ${INTIP}"

case "$1" in

start)

 echo -n "Starting firewall: "


 #modprobe ip_tables
 #modprobe ip_conntrack
 #modprobe ip_conntrack_ftp
 #modprobe ip_masq_ftp
 #modprobe ip_masq_irc
 #modprobe ip_masq_raudio



  $IPTABLES -t nat -A POSTROUTING -o $EXTDEV -j SNAT --to-source=$EXTIP




 $IPTABLES -F

  $IPTABLES -P INPUT DROP
 $IPTABLES -P OUTPUT DROP
 $IPTABLES -P FORWARD DROP

 #--==[ kernel ]==--
 #

  echo 1 > /proc/sys/net/ipv4/ip_forward

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts

  /bin/echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route

  /bin/echo "0" > /proc/sys/net/ipv4/conf/all/accept_redirects

  /bin/echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses

 /bin/echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter

  $IPTABLES -A INPUT -i lo -j ACCEPT
 $IPTABLES -A OUTPUT -o lo -j ACCEPT


 #$IPTABLES -I FORWARD -p tcp -d $DSTIP --dport $SRCPRT -j ACCEPT
 #$IPTABLES -I FORWARD -p udp -d $DSTIP --dport $SRCPRT -j ACCEPT
 #$IPTABLES -t nat -A PREROUTING -p tcp -i $LOCALIF -s $ALLOWFROM -d
$SRCIP --dport $SRCPRT -j DNAT --to $DSTIP
 #$IPTABLES -t nat -A PREROUTING -p udp -i $LOCALIF -s $ALLOWFROM -d
$SRCIP --dport $SRCPRT -j DNAT --to $DSTIP



 #---==[  INPUT ]==---

 $IPTABLES -A INPUT -i $EXTDEV -p icmp -m state --state ESTABLISHED -j
ACCEPT
 $IPTABLES -A INPUT -i $EXTDEV -p icmp -m state --state RELATED -j ACCEPT
 # Przepuszczamy nawiazywanie polaczen
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state NEW -j ACCEPT
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state ESTABLISHED -j
ACCEPT
 $IPTABLES -A OUTPUT -o $EXTDEV -p icmp -m state --state RELATED -j ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp -d 192.168.1.255 --dport 137:138 -j
DROP

  #** SSH **
  $IPTABLES -A INPUT -p tcp --sport 1024: --dport 22 -m state --state NEW -j
ACCEPT

 #** FTP **
  $IPTABLES -A INPUT  -p tcp --dport 21 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 21 -m state --state NEW -j ACCEPT

 #** DHCPD **
 $IPTABLES -A INPUT  -p tcp --dport 67 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 67 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p tcp --dport 68 -m state --state NEW -j ACCEPT
 $IPTABLES -A INPUT  -p udp --dport 68 -m state --state NEW -j ACCEPT



 #** HTTP **
 $IPTABLES -A INPUT -p tcp --sport 1024: --dport 80 -m state --state NEW -j
ACCEPT

 #** RPC **
 $IPTABLES -A INPUT -i $INTDEV -p tcp --dport 111 -m state --state NEW -j
ACCEPT
 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 111 -m state --state NEW -j
ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 2049 -m state --state NEW -j
ACCEPT

 $IPTABLES -A INPUT -i $INTDEV -p udp --dport 1026 -m state --state NEW -j
ACCEPT
 $IPTABLES -A INPUT -i $INTDEV -p tcp --dport 1026 -m state --state NEW -j
ACCEPT

 #** DNS **
 $IPTABLES -A INPUT -i $INTDEV -p udp --sport 1024: --dport 53 -m
state --state NEW -j ACCEPT
 # Transakcje serwer-serwer
 $IPTABLES -A INPUT -i $INTDEV -p udp --sport 53 --dport 53 -m state --state
NEW -j ACCEPT


 $IPTABLES -A INPUT -p tcp --sport 1024: --dport 113 -m state --state NEW -j
REJECT --reject-with icmp-port-unreachable

 $IPTABLES -A INPUT -m state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A INPUT -m state --state RELATED -j ACCEPT

 #$IPTABLES -A INPUT -j LOG --log-prefix "IPT INPUT: "
 $IPTABLES -A INPUT -j DROP


 #---==[  OUTPUT ]==---

  $IPTABLES -A OUTPUT -m state --state ! INVALID -j ACCEPT

  #$IPTABLES -A OUTPUT -j LOG --log-prefix "IPT OUTPUT: "
 $IPTABLES -A OUTPUT -j DROP


 #---==[  FORWARD ]==---

 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state NEW -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p tcp -s $INTNET --sport 1024: -m
state --state RELATED -j ACCEPT


 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state NEW -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -i $INTDEV -p udp -s $INTNET --sport 1024: -m
state --state RELATED -j ACCEPT

  $IPTABLES -A FORWARD -o $INTDEV -p tcp -d $INTNET --dport 1024: -m
state --state ESTABLISHED -j ACCEPT
 $IPTABLES -A FORWARD -o $INTDEV -p tcp -d $INTNET --dport 1024:

Re: Help with Firewall section in the Debian Security Manual

2002-01-18 Thread Peter Wiersig
On Friday, 18. January 2002 05:29, Jor-el wrote:
> On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:

> > Both should point to other sites regarding general info (what a firewall
> > is? what does netfilter do?) and not reproduce it (terrible waste of time
> > and difficult to maintain up to date).
>
>   Is it really wise to talk about netfilter in a "Debian Security
> HOWTO"? After all, the stable distribution of Debian (which is what
> newbies will and should use), uses the 2.2 kernel which doesnt support
> netfilter.

Do you think newbies would start with build their own firewall scripts?
I don't. Having build a ipchains script, and having upgraded to iptables 
lately I would say that iptables required a much more sane script.

I would like to have a bit more talk about firewall concepts and security 
background information than an packet-filter script implementation in the 
HOWTO. I think there are enough example script available on the net, and all 
the information I needed to write my script was in "Building Internet 
Firewalls, 2nd ed." from O'Reilly.

I would have volunteered to contribute to the HOWTO, but during the next 
months my spare time is reduced to a minimum. I will return to the idea when 
I'm having more time and I look forward reading Martins work and add my 
thoughts to that.

Peter



Re: Help with Firewall section in the Debian Security Manual

2002-01-18 Thread Javier Fernández-Sanguino Peña
Consider that the HOWTO is a "moving target" it might reference
packages/software currently available only on testing/unstable. In any case 
it's ok to
comment on netfilter since users can install a 2.4 kernel even if running 
stable.
The Debian Security HOWTO is not directed towards normal users, it's 
more
oriented towards power-users and administrators. Granted, it might give a false 
sense
of how/what security is in stable currently. Maybe I should add a disclaimer 
somewhere
(although difference on distributions are usually commented there too)

Regards

Javi

 On Thu, Jan 17, 2002 at 10:29:59PM -0600, Jor-el wrote:
> On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:
> 
> > 
> > Both should point to other sites regarding general info (what a firewall 
> > is? what does
> > netfilter do?) and not reproduce it (terrible waste of time and difficult 
> > to maintain
> > up to date).
> > 
> Javier,
> 
>   Is it really wise to talk about netfilter in a "Debian Security
> HOWTO"? After all, the stable distribution of Debian (which is what
> newbies will and should use), uses the 2.2 kernel which doesnt support
> netfilter. Perhaps if you want to talk about iptables based firewalling,
> you are really targetting users running testing / unstable, and thus you
> are talking about a "Debian testing / unstable Security HOWTO".
> 
> Regards,
> Jor-el
> 
> 
> --
> To UNSUBSCRIBE, email to [EMAIL PROTECTED]
> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

-- 



Re: Help with Firewall section in the Debian Security Manual

2002-01-18 Thread Peter Wiersig

On Friday, 18. January 2002 05:29, Jor-el wrote:
> On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:

> > Both should point to other sites regarding general info (what a firewall
> > is? what does netfilter do?) and not reproduce it (terrible waste of time
> > and difficult to maintain up to date).
>
>   Is it really wise to talk about netfilter in a "Debian Security
> HOWTO"? After all, the stable distribution of Debian (which is what
> newbies will and should use), uses the 2.2 kernel which doesnt support
> netfilter.

Do you think newbies would start with build their own firewall scripts?
I don't. Having build a ipchains script, and having upgraded to iptables 
lately I would say that iptables required a much more sane script.

I would like to have a bit more talk about firewall concepts and security 
background information than an packet-filter script implementation in the 
HOWTO. I think there are enough example script available on the net, and all 
the information I needed to write my script was in "Building Internet 
Firewalls, 2nd ed." from O'Reilly.

I would have volunteered to contribute to the HOWTO, but during the next 
months my spare time is reduced to a minimum. I will return to the idea when 
I'm having more time and I look forward reading Martins work and add my 
thoughts to that.

Peter


-- 
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Re: Help with Firewall section in the Debian Security Manual

2002-01-18 Thread Javier Fernández-Sanguino Peña

Consider that the HOWTO is a "moving target" it might reference
packages/software currently available only on testing/unstable. In any case it's ok to
comment on netfilter since users can install a 2.4 kernel even if running stable.
The Debian Security HOWTO is not directed towards normal users, it's more
oriented towards power-users and administrators. Granted, it might give a false sense
of how/what security is in stable currently. Maybe I should add a disclaimer somewhere
(although difference on distributions are usually commented there too)

Regards

Javi

 On Thu, Jan 17, 2002 at 10:29:59PM -0600, Jor-el wrote:
> On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:
> 
> > 
> > Both should point to other sites regarding general info (what a firewall is? what 
>does
> > netfilter do?) and not reproduce it (terrible waste of time and difficult to 
>maintain
> > up to date).
> > 
> Javier,
> 
>   Is it really wise to talk about netfilter in a "Debian Security
> HOWTO"? After all, the stable distribution of Debian (which is what
> newbies will and should use), uses the 2.2 kernel which doesnt support
> netfilter. Perhaps if you want to talk about iptables based firewalling,
> you are really targetting users running testing / unstable, and thus you
> are talking about a "Debian testing / unstable Security HOWTO".
> 
> Regards,
> Jor-el
> 
> 
> --
> To UNSUBSCRIBE, email to [EMAIL PROTECTED]
> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

-- 


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Re: Help with Firewall section in the Debian Security Manual

2002-01-17 Thread Jor-el
On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:

> 
> Both should point to other sites regarding general info (what a firewall is? 
> what does
> netfilter do?) and not reproduce it (terrible waste of time and difficult to 
> maintain
> up to date).
> 
Javier,

Is it really wise to talk about netfilter in a "Debian Security
HOWTO"? After all, the stable distribution of Debian (which is what
newbies will and should use), uses the 2.2 kernel which doesnt support
netfilter. Perhaps if you want to talk about iptables based firewalling,
you are really targetting users running testing / unstable, and thus you
are talking about a "Debian testing / unstable Security HOWTO".

Regards,
Jor-el



Re: Help with Firewall section in the Debian Security Manual

2002-01-17 Thread Jor-el

On Wed, 16 Jan 2002, Javier Fernández-Sanguino Peña wrote:

> 
> Both should point to other sites regarding general info (what a firewall is? what 
>does
> netfilter do?) and not reproduce it (terrible waste of time and difficult to maintain
> up to date).
> 
Javier,

Is it really wise to talk about netfilter in a "Debian Security
HOWTO"? After all, the stable distribution of Debian (which is what
newbies will and should use), uses the 2.2 kernel which doesnt support
netfilter. Perhaps if you want to talk about iptables based firewalling,
you are really targetting users running testing / unstable, and thus you
are talking about a "Debian testing / unstable Security HOWTO".

Regards,
Jor-el


--
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Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread martin f krafft
also sprach Javier Fernández-Sanguino Peña <[EMAIL PROTECTED]> [2002.01.16.1905 
+0100]:
> On Wed, Jan 16, 2002 at 04:19:31PM +0100, martin f krafft wrote:
> > 
> > got ya. i'll think about it. deadlines?
> 
>   None really. However, less than a month would be nice :)

:(
i don't think i can make that. i'll see. up until the end of february, i
am really busy...

-- 
martin;  (greetings from the heart of the sun.)
  \ echo mailto: !#^."<*>"|tr "<*> mailto:"; [EMAIL PROTECTED]
  
"time flies like an arrow. fruit flies like a banana."
   -- groucho marx


pgp2n9b0OhwQb.pgp
Description: PGP signature


Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread Javier Fernández-Sanguino Peña
On Wed, Jan 16, 2002 at 04:19:31PM +0100, martin f krafft wrote:
> 
> got ya. i'll think about it. deadlines?

None really. However, less than a month would be nice :)

Javi



Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread martin f krafft

also sprach Javier Fernández-Sanguino Peña <[EMAIL PROTECTED]> [2002.01.16.1905 +0100]:
> On Wed, Jan 16, 2002 at 04:19:31PM +0100, martin f krafft wrote:
> > 
> > got ya. i'll think about it. deadlines?
> 
>   None really. However, less than a month would be nice :)

:(
i don't think i can make that. i'll see. up until the end of february, i
am really busy...

-- 
martin;  (greetings from the heart of the sun.)
  \ echo mailto: !#^."<*>"|tr "<*> mailto:"; net@madduck
  
"time flies like an arrow. fruit flies like a banana."
   -- groucho marx



msg05323/pgp0.pgp
Description: PGP signature


Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread Javier Fernández-Sanguino Peña

On Wed, Jan 16, 2002 at 04:19:31PM +0100, martin f krafft wrote:
> 
> got ya. i'll think about it. deadlines?

None really. However, less than a month would be nice :)

Javi


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Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread martin f krafft
also sprach Javier Fernández-Sanguino Peña <[EMAIL PROTECTED]> [2002.01.16.1522 
+0100]:
> Can anyone volunteer?

i might...

> - a section host-oriented on how to setup firewall rules as a "last
> line of defense" (that's the one I have started writting) talking,
> basicly, on Debian-specific issues (tools available, which ones to
> use?).

what tools are there but iptables/ipchains/ipfwadm? frontends? then i am
not the right person. i don't believe in frontends...

> - a *chapter* (server-oriented) on how to setup a firewall using
> Debian GNU/Linux. Regarding: firewall setup, administration, logging,
> detection of alarms... One very useful section would setting up a
> proxy-level firewall (using software available in Debian).

mh. sounds better.

> Both should point to other sites regarding general info (what a
> firewall is? what does netfilter do?) and not reproduce it (terrible
> waste of time and difficult to maintain up to date).

got ya. i'll think about it. deadlines?

-- 
martin;  (greetings from the heart of the sun.)
  \ echo mailto: !#^."<*>"|tr "<*> mailto:"; [EMAIL PROTECTED]
  
si l'on sait exactement ca que l'on va faire,
a quoi bon le faire?
  -- pablo picasso


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Help with Firewall section in the Debian Security Manual

2002-01-16 Thread Javier Fernández-Sanguino Peña

I would appreciate it somebody volunteered to write a "firewalling in Debian 
GNU/Linux"
section for the "Debian Security HOWTO". I have just commited to the CVS server 
(should
be readable in the web tomorrow) a small section regarding it but there's a lot 
of room
for improvement.

Can anyone volunteer? I would like:

- a section host-oriented on how to setup firewall rules as a "last line of 
defense"
(that's the one I have started writting) talking, basicly, on Debian-specific 
issues
(tools available, which ones to use?).

- a *chapter* (server-oriented) on how to setup a firewall using Debian 
GNU/Linux.
Regarding: firewall setup, administration, logging, detection of alarms... One
very useful section would setting up a proxy-level firewall (using software 
available
in Debian).

Both should point to other sites regarding general info (what a firewall is? 
what does
netfilter do?) and not reproduce it (terrible waste of time and difficult to 
maintain
up to date).

Anyone?

Javier Fernández-Sanguino Peña



Re: Help with Firewall section in the Debian Security Manual

2002-01-16 Thread martin f krafft

also sprach Javier Fernández-Sanguino Peña <[EMAIL PROTECTED]> [2002.01.16.1522 +0100]:
> Can anyone volunteer?

i might...

> - a section host-oriented on how to setup firewall rules as a "last
> line of defense" (that's the one I have started writting) talking,
> basicly, on Debian-specific issues (tools available, which ones to
> use?).

what tools are there but iptables/ipchains/ipfwadm? frontends? then i am
not the right person. i don't believe in frontends...

> - a *chapter* (server-oriented) on how to setup a firewall using
> Debian GNU/Linux. Regarding: firewall setup, administration, logging,
> detection of alarms... One very useful section would setting up a
> proxy-level firewall (using software available in Debian).

mh. sounds better.

> Both should point to other sites regarding general info (what a
> firewall is? what does netfilter do?) and not reproduce it (terrible
> waste of time and difficult to maintain up to date).

got ya. i'll think about it. deadlines?

-- 
martin;  (greetings from the heart of the sun.)
  \ echo mailto: !#^."<*>"|tr "<*> mailto:"; net@madduck
  
si l'on sait exactement ca que l'on va faire,
a quoi bon le faire?
  -- pablo picasso



msg05313/pgp0.pgp
Description: PGP signature


Help with Firewall section in the Debian Security Manual

2002-01-16 Thread Javier Fernández-Sanguino Peña


I would appreciate it somebody volunteered to write a "firewalling in Debian GNU/Linux"
section for the "Debian Security HOWTO". I have just commited to the CVS server (should
be readable in the web tomorrow) a small section regarding it but there's a lot of room
for improvement.

Can anyone volunteer? I would like:

- a section host-oriented on how to setup firewall rules as a "last line of defense"
(that's the one I have started writting) talking, basicly, on Debian-specific issues
(tools available, which ones to use?).

- a *chapter* (server-oriented) on how to setup a firewall using Debian GNU/Linux.
Regarding: firewall setup, administration, logging, detection of alarms... One
very useful section would setting up a proxy-level firewall (using software available
in Debian).

Both should point to other sites regarding general info (what a firewall is? what does
netfilter do?) and not reproduce it (terrible waste of time and difficult to maintain
up to date).

Anyone?

Javier Fernández-Sanguino Peña


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