Krishna,

After install RedHat 7.3 on a COMPAQ machine using the Firewall
Configuration: Medium Security Level, The system denied nfs and port 0:1023
(EJECT nfs and port 0:1023). In order to enable nfs, I edit
/etc/sysconfig/ipchains and get new ipchains rules as follows. But I still
can't mount to remote host by nfs.

$ ps -ef | grep portmap
rpc  7038  1  0  12:02  ?  00:00:00  portmap
# ipchains -L
ACCEPT tcp -y---- anywhere anywhere any -> nfs
ACCEPT udp ------ anywhere anywhere any -> nfs
REJECT tcp -y---- anywhere anywhere any -> 0:1023
REJECT udp ------ anywhere anywhere any -> 0:1023
# mount remotehost:/test /localtest
mount: RPC: Timed out

Is nfs conflicts 0:1023 ports? Although nfs uses port 2049, I guess that
some ports still should be enabled between 0:1023. I want to REJECT as many
as ports between 0:1023, but keep nfs running. Do you know how to resolve it
by using ipchains.

Thanks,
Hong


-----Original Message-----
From: Krishna [mailto:[EMAIL PROTECTED]]
Sent: Thursday, October 03, 2002 2:52 AM
To: Hong Tian
Subject: Re[2]: ipchains


Hi Hong,    Thursday, October 03, 2002       12:20:42 PM
        By default all inputs and outputs are closed. Uncomment all what was
in
        ipchains file (/etc/sysconfig/ipchains). I do manually edit
        ipchains file.

 regards,
 Krishna                            mailto:[EMAIL PROTECTED]

 Krishna Shekhar
 Network Administrator
 Wiplash Wireless

Wednesday, October 2, 2002, 9:06:29 PM , you wrote:

HT> I did the followings (198.138.244.0 is local network address), but nfs
still
HT> does not work. Should I manually modify /etc/sysconfig/ipchains?

HT> lan='198.138.244.0/255.255.255.0'
HT> ipchains --append input --protocol tcp --source $lan nfs --jump ACCEPT
HT> ipchains --append input --protocol udp --source $lan nfs --jump ACCEPT
HT> ipchains --append output --protocol tcp --destination $lan nfs --jump
ACCEPT
HT> ipchains --append output --protocol udp --destination $lan nfs --jump
ACCEPT
HT> service ipchains save


HT> -----Original Message-----
HT> From: Anthony E. Greene [mailto:[EMAIL PROTECTED]]
HT> Sent: Wednesday, October 02, 2002 1:47 AM
HT> To: [EMAIL PROTECTED]
HT> Subject: Re: ipchains


HT> -----BEGIN PGP SIGNED MESSAGE-----
HT> Hash: SHA1

HT> On 01-Oct-2002/16:23 -0400, Hong Tian <[EMAIL PROTECTED]> wrote:
>>After installing RedHat 7.3 with Medium Security Level. The nfs is REJECT
HT> by
>>Ipchains. In order to allow mounting to another server, I need to set up
>>with ACCEPT tcp/udp nfs (port 2049).
HT> [snip]

HT> lan='192.168.0.0/255.255.255.0'
HT> ipchains --append input --protocol tcp --source $lan nfs --jump ACCEPT
HT> ipchains --append input --protocol udp --source $lan nfs --jump ACCEPT
HT> ipchains --append output --protocol tcp --destination $lan nfs --jump
ACCEPT
HT> ipchains --append output --protocol udp --destination $lan nfs --jump
ACCEPT
HT> service ipchains save


HT> The first line sets the $lan variable to the local network/netmask to
HT> restrict NFS connections to your local network. The next 4 lines set the
HT> ipchains rules. The last line saves the rules to
/etc/sysconfig/ipchains,
HT> where they will be read each time the ipchais service is started.

HT> Tony
HT> - -- 
HT> Anthony E. Greene
<mailto:[EMAIL PROTECTED]%3E>
HT> OpenPGP Key: 0x6C94239D/7B3D BD7D 7D91 1B44 BA26  C484 A42A 60DD 6C94
239D
HT> AOL/Yahoo Messenger: TonyG05    HomePage:
<http://www.pobox.com/~agreene/>
HT> Linux. The choice of a GNU generation <http://www.linux.org/>

HT> -----BEGIN PGP SIGNATURE-----
HT> Version: GnuPG v1.0.6 (GNU/Linux)
HT> Comment: Anthony E. Greene <mailto:[EMAIL PROTECTED]> 0x6C94239D

HT> iD8DBQE9mohtpCpg3WyUI50RAgBtAKCvI5BLBkqCkeAxcsHchPLrG5EyhQCcCNTM
HT> pUYCdm6ErWWt/WinnpN7Pj8=
HT> =988F
HT> -----END PGP SIGNATURE-----





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