Hey everyone,

I've started to notice FTP problems with an Oxygen firewall I have
running.  The problem occurs on both unix and NT systems located behind
the firewall.  I have found that all ftp transfers be they incoming or
outgoing eventually freeze.  Although it appears that NT -> NT transfers
are more stable, they too freeze after about 800-1500 files have been
transferred.

The firewall configuration is pretty simple.  It has two 2 ethernet
interfaces, and proxyarp is being used.  I've included the seawall.conf
file below.  One thing about my config is that I do not have any masq
timeouts specified.  I was wondering if perhaps I should?  

One thing I've noticed that I think is interesting to note is that this
problem does not occur when using LeechFTP.   I believe this because
LeechFTP tends to keep sending commands to keep the connection active.
That's why I was wondering if it could have something to do with the
masq timeouts.

My seawall.conf: (with comments stripped out)

---
internet="eth0"
myip="x.y.z.51"
local="eth1"
strong=""
noforward="eth1"
noforwardnets=""
dialinppp=""
localports=""
log="Yes"
lockfile="/var/state/firewall"
ntpservers=""
ntpnonpriv="No"
dnsservers=""
dnslocalports=""
icqports=""
pptpservers=""
pptpserver=""
ipsecservers=""
poptop=""
pptpclients=""
pptpclient="No"
dmz=""
localnets=""
nonmasq=""
nonmasqnets=""
popservers=""
smtpservers=""
modules=""
masq_timeouts=""
---

Should I be setting anything for the masq_timeouts if I am using
ProxyARP?  I guess my real question is that if I am using ProxyArp am I
still masq'ing?


Here is a log from some testing I was doing:

---
sending Body_RJ_B4_FMA_012802_R0017GR01.txt as
Body_RJ_B4_FMA_012802_R0017GR01.txt (1 of 285)
PASV
227 Entering Passive Mode (205,150,101,55,247,15)
connecting to x.y.z.55:63247
- -
connecting to x.y.z.55:63247
! Connection failed x.y.z.55 - connection timed out
! connect: error 0
PORT 192,168,0,124,7,124
200 PORT command successful.
STOR Body_RJ_B4_FMA_012802_R0017GR01.txt
150 Opening ASCII mode data connection for
Body_RJ_B4_FMA_012802_R0017GR01.txt.
Transmitted 3008 bytes in 0.1 secs, (290.00 Kbps), transfer succeeded
226 Transfer complete.
MDTM 20020129035134 Body_RJ_B4_FMA_012802_R0017GR01.txt
550 20020129035134 Body_RJ_B4_FMA_012802_R0017GR01.txt: No such file or
directory.
sending Body_RJ_ES_ESN_012802_R0205I00D.txt as
Body_RJ_ES_ESN_012802_R0205I00D.txt (2 of 285)
PASV
227 Entering Passive Mode (x,y,z,55,181,6)

connecting to x.y.z.55:46342
- -
connecting to x.y.z.55:46342
! Connection failed x.y.z.55 - connection timed out
! connect: error 0
PORT 192,168,0,124,7,131
200 PORT command successful.
STOR Body_RJ_ES_ESN_012802_R0205I00D.txt
150 Opening ASCII mode data connection for
Body_RJ_ES_ESN_012802_R0205I00D.txt.
Transmitted 1039 bytes in 0.1 secs, (100.00 Kbps), transfer succeeded
226 Transfer complete.
sending Body_RJ_ES_ESN_012802_R0205J00D.txt as
Body_RJ_ES_ESN_012802_R0205J00D.txt (3 of 285)
PASV
227 Entering Passive Mode (x,y,z,55,243,37)
connecting to x.y.z.55:62245
- -
connecting to x.y.z.55:62245
! Connection failed x.y.z.55 - connection timed out
! connect: error 0
PORT 192,168,0,124,7,135
200 PORT command successful.
STOR Body_RJ_ES_ESN_012802_R0205J00D.txt
150 Opening ASCII mode data connection for
Body_RJ_ES_ESN_012802_R0205J00D.txt.
Transmitted 1039 bytes in 0.1 secs, (100.00 Kbps), transfer succeeded
226 Transfer complete.
PWD
257 "/home/campload" is current directory.
PASV
227 Entering Passive Mode (x,y,z,55,178,19)
connecting to x.y.z.55:45587
- -
connecting to x.y.z.55:45587
! Connection failed x.y.z.55 - connection timed out
! connect: error 0
PORT 192,168,0,124,7,138
200 PORT command successful.
LIST
150 Opening ASCII mode data connection for directory listing.
Received 501 bytes in 0.1 secs, (40.00 Kbps), transfer succeeded
226 Transfer complete.
---

Thanks in advance.
Ryan.

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